Edgar Filing: BLACKROCK CORE BOND TRUST

BLACKROCK CORE BOND TRUST

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED

MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number: 811-10543

Name of Fund: BlackRock Core Bond Trust (BHK)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: John M. Perlowski, Chief Executive Officer, BlackRock Core Bond Trust,

55 East 52^nd Street, New York, NY 10055

Registrant’s telephone number, including area code: (800) 882-0052, Option 4

Date of fiscal year end: 08/31/2017

Date of reporting period: 05/31/2017

Item 1 – Schedule of Investments

Schedule of Investments May 31, 2017 (Unaudited)

BlackRock Core Bond Trust (BHK)

(Percentages shown are based on Net Assets)


Asset-Backed Securities	Par (000)			Value
Asset-Backed Securities — 11.1%
AIMCO CLO, Series 2014-AA, Class DR, 4.33%, 7/20/26 (a)(b)(c)		USD	795	$	795,000
ALM VI Ltd., Series 2012-6A, Class B2R, 3.96%, 7/15/26 (b)(c)			1,000		1,000,714
Anchorage Capital CLO Ltd. (a)(b)(c):
Series 2014-4A, Class CR, 4.57%, 7/28/26			1,975		1,975,000
Series 2016-9A, Class D, 4.95%, 1/15/29			650		654,225
Apidos CLO XIX, Series 2014-19A, Class DR, 4.56%, 10/17/26 (b)(c)			1,000		1,001,080
Ares XXVIII CLO Ltd., Series 2013-3A, Class DR, 4.41%, 10/17/24 (b)(c)			1,000		1,003,017
Ares XXXII CLO Ltd., Series 2014-32A, Class CR, 4.63%, 11/15/25 (b)(c)			1,250		1,250,139
Atlas Senior Loan Fund Ltd., 4.92%, 11/30/28 (a)(b)(c)			1,250		1,256,250
Babson CLO Ltd., Series 2013-IA, Class D, 4.66%, 4/20/25 (b)(c)			1,500		1,503,120
Ballyrock CLO LLC, Series 2014-1A, Class CR, 4.81%, 10/20/26 (a)(b)(c)			1,970		1,969,961
Battalion CLO VII Ltd., Series 2014-7A, Class C, 5.06%, 10/17/26 (b)(c)			1,000		998,956
BlueMountain CLO Ltd., Series 2014-3A, Class CR, 4.36%, 10/15/26 (b)(c)			1,000		998,976
Bowman Park CLO Ltd., Series 2014-1A, Class D2R, 4.54%, 11/23/25 (a)(b)(c)			3,000		3,000,000
CenterPoint Energy Transition Bond Co. IV LLC, Series 2012-1, Class A3, 3.03%, 10/15/25			2,210		2,290,290
CIFC Funding Ltd. (b)(c):
Series 2012-3A, Class B1R, 5.04%, 1/29/25			2,500		2,511,337
Series 2013-IA, Class B, 3.97%, 4/16/25			1,000		1,000,348
Series 2014-4A, Class D, 4.56%, 10/17/26			2,000		2,010,606
Countrywide Asset-Backed Certificates, Series 2006-13, Class 3AV2, 1.17%, 1/25/37 (b)			265		257,497
DCP Rights LLC, Series 2014-1A, Class A, 5.46%, 10/25/44 (c)			3,864		3,906,705
Dryden Senior Loan Fund (b)(c):
Series 2014-31A, Class DR, 4.51%, 4/18/26			1,250		1,256,914


Asset-Backed Securities		Par (000)		Value
Asset-Backed Securities (continued)
Dryden Senior Loan Fund (b)(c) (continued):
Series 2014-34A, Class CR, 3.31%, 10/15/26 (a)	USD		1,000	$	1,000,000
Series 2015-41A, Class A, 2.66%, 1/15/28			2,550		2,560,386
Galaxy XIV CLO Ltd., Series 2012-14A, Class DR, 5.48%, 11/15/26 (b)(c)			1,000		1,004,002
Galaxy XV CLO Ltd., Series 2013-15A, Class C, 3.76%, 4/15/25 (b)(c)			1,000		1,000,462
GoldenTree Loan Opportunities IX Ltd., Series 2014-9A, Class D, 4.67%, 10/29/26 (b)			1,000		1,001,718
Highbridge Loan Management Ltd., Series 5A-2015, Class C1, 4.37%, 1/29/26 (b)(c)			4,000		4,000,675
Limerock CLO III LLC, Series 2014-3A, Class C, 4.76%, 10/20/26 (b)(c)			3,750		3,749,238
Madison Park Funding XV Ltd., Series 2014-15A, Class B1R, 3.37%, 1/27/26 (b)(c)			1,800		1,803,005
Nelnet Student Loan Trust, Series 2006-1, Class A5, 1.30%, 8/23/27 (b)			735		732,309
Neuberger Berman CLO XV, Series 2013-15A, Class D, 4.41%, 10/15/25 (b)(c)			1,000		997,461
Neuberger Berman CLO XVIII Ltd., Series 2014-18A, Class CR, 5.43%, 11/14/27 (b)(c)			2,250		2,268,142
Oaktree EIF II Ltd., Series 2015-B1A, Class C, 4.28%, 2/15/26 (b)(c)			1,000		1,000,981
OCP CLO Ltd., Series 2012-2A, Class DR, 5.64%, 11/22/25 (b)(c)			1,000		1,006,266
Octagon Investment Partners XXI Ltd., Series 2014-1A, Class C, 4.83%, 11/14/26 (b)(c)			2,000		2,010,776
Octagon Investment Partners XXII Ltd., Series 2014-1A, Class C1, 4.40%, 11/25/25 (b)(c)			2,000		1,999,992
OneMain Financial Issuance Trust, Series 2015-2A, Class C, 4.32%, 7/18/25 (c)			5,000		5,006,724
OZLM Funding III Ltd., Series 2013-3A, Class BR, 4.15%, 1/22/29 (b)(c)			1,500		1,520,242
OZLM VII Ltd., Series 2014-7A, Class CR, 4.66%, 7/17/26 (b)(c)			950		954,780



BLACKROCK CORE BOND TRUST	MAY 31, 2017	1


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Asset-Backed Securities	Par (000)			Value
Asset-Backed Securities (continued)
OZLM VIII Ltd., Series 2014-8A, Class CR, 4.66%, 10/17/26 (a)(b)(c)		USD	1,750	$	1,750,000
Regatta V Funding Ltd., Series 2014-1A, Class C, 4.61%, 10/25/26 (b)(c)			2,000		1,999,483
Rockford Tower CLO Ltd., Series 2017-1A, Class D, 4.62%, 4/15/29 (a)(b)(c)			750		725,775
SLM Private Education Loan Trust (c):
Series 2012-A, Class A2, 3.83%, 1/17/45			622		634,364
Series 2014-A, Class B, 3.50%, 11/15/44			500		509,310
SMB Private Education Loan Trust, Series 2015-C, Class C, 4.50%, 9/17/46 (c)			5,900		6,021,275
Sound Point CLO IV Ltd., Series 2013-3A, Class DR, 4.56%, 1/21/26 (a)(b)(c)			700		700,000
Sound Point CLO VII Ltd., Series 2014-3A, Class D, 4.75%, 1/23/27 (b)(c)			1,250		1,251,470
Sound Point CLO XIV Ltd., Series 2016-3A, Class D, 5.00%, 1/23/29 (b)(c)			1,550		1,565,873
Stewart Park CLO Ltd., Series 2015-1A, Class D, 4.61%, 4/15/26 (a)(b)(c)			1,000		1,001,020
Structured Asset Securities Corp., Series 2002-AL1, Class A2, 3.45%, 2/25/32			698		695,504
THL Credit Wind River CLO Ltd., Series 2014-3A, Class DR, 4.47%, 1/22/27 (a)(b)(c)(d)			1,000		1,000,000
Voya CLO Ltd. (b)(c):
Series 2012-2A, Class CR, 4.11%, 10/15/22			1,500		1,500,486
Series 2016-3A, Class D, 8.01%, 10/18/27			615		624,836
World Financial Network Credit Card Master Trust, Series 2012-C, Class C, 4.55%, 8/15/22			2,360		2,420,807
York CLO-4 Ltd., Series 2016-2A, Class D, 5.26%, 1/20/30 (b)(c)			1,500		1,513,879

					88,171,376
Interest Only Asset-Backed Securities — 0.1%
Sterling Bank Trust, Series 2004-2, Class Note, 2.08%, 3/30/30 (a)(c)			2,836		193,177


Asset-Backed Securities		Par (000)		Value
Interest Only Asset-Backed Securities (continued)
Sterling Coofs Trust, Series 2004-1, Class A, 2.36%, 4/15/29 (a)(c)	USD		7,264	$	498,609

					691,786
Total Asset-Backed Securities — 11.2%					88,863,162


Corporate Bonds
Aerospace & Defense — 1.0%
Accudyne Industries Borrower/Accudyne Industries LLC, 7.75%, 12/15/20 (c)			670		678,375
Bombardier, Inc. (c):
8.75%, 12/01/21			596		663,050
6.00%, 10/15/22			188		188,118
6.13%, 1/15/23			107		107,334
7.50%, 3/15/25			314		324,827
Eaton Corp., 4.15%, 11/02/42			500		507,085
EnPro Industries, Inc., 5.88%, 9/15/22 (c)			74		77,330
KLX, Inc., 5.88%, 12/01/22 (c)			491		518,044
Koppers, Inc., 6.00%, 2/15/25 (c)			151		158,550
Kratos Defense & Security Solutions, Inc., 7.00%, 5/15/19			60		61,350
Lockheed Martin Corp., 4.70%, 5/15/46			1,250		1,394,713
Moog, Inc., 5.25%, 12/01/22 (c)			180		187,650
TransDigm, Inc.:
5.50%, 10/15/20			211		216,207
6.00%, 7/15/22			645		668,301
6.50%, 7/15/24			216		224,640
6.50%, 5/15/25 (c)			107		110,745
6.38%, 6/15/26			26		26,650
United Technologies Corp., 6.13%, 7/15/38			1,450		1,893,796

					8,006,765
Air Freight & Logistics — 0.3%
FedEx Corp., 4.75%, 11/15/45			1,250		1,330,706
XPO Logistics, Inc.:
5.75%, 6/15/21	EUR		100		118,386
6.50%, 6/15/22 (c)	USD		535		568,010

					2,017,102
Airlines — 2.2%
Air Canada Pass-Through Trust, Series 2015-1, Class B, 3.88%, 9/15/24 (c)			1,786		1,776,333
American Airlines Pass-Through Trust:
Series 2013-2, Class A, 4.95%, 7/15/24 (e)			3,586		3,832,434



2	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Airlines (continued)
American Airlines Pass-Through Trust (continued):
Series 2015-2, Class A, 4.00%, 3/22/29		USD	1,429	$	1,463,726
Series 2015-2, Class AA, 3.60%, 3/22/29			1,429		1,460,461
Series 2017-1, Class B, 4.95%, 8/15/26			1,925		1,975,435
Continental Airlines Pass-Through Trust:
Series 2010-1, Class B, 6.00%, 7/12/20			401		411,082
Series 2012-3, Class C, 6.13%, 4/29/18			150		154,500
United Airlines Pass-Through Trust:
Series 2013-1, Class A, 4.30%, 2/15/27			3,509		3,715,111
Series 2014-2, Class B, 4.63%, 3/03/24			2,358		2,417,435

					17,206,517
Auto Components — 0.3%
Allison Transmission, Inc., 5.00%, 10/01/24 (c)			19		19,380
Delphi Automotive PLC, 4.40%, 10/01/46			465		456,708
Faurecia, 3.63%, 6/15/23		EUR	100		118,860
Federal-Mogul Holdings LLC, 4.88%, 4/15/24 (b)			100		112,683
FTE Verwaltungs GmbH, 9.00%, 7/15/20			100		117,473
Icahn Enterprises LP/Icahn Enterprises Finance Corp.:
4.88%, 3/15/19		USD	367		371,404
6.25%, 2/01/22			80		83,300
6.75%, 2/01/24			252		263,340
IHO Verwaltungs GmbH (f):
(2.75% Cash or 3.50% PIK), 2.75%, 9/15/21		EUR	100		116,267
(3.25% Cash or 4.00% PIK), 3.25%, 9/15/23			100		118,103
(4.13% Cash or 4.88% PIK), 4.13%, 9/15/21 (c)		USD	200		204,250
ZF North America Capital, Inc., 4.75%, 4/29/25 (c)			150		157,875

					2,139,643
Automobiles — 0.9%
Ford Motor Co., 4.75%, 1/15/43 (e)			4,255		4,008,784
General Motors Co., 6.25%, 10/02/43 (e)			2,506		2,747,045

					6,755,829


Corporate Bonds		Par (000)		Value
Banks — 1.7%
Allied Irish Banks PLC, 4.13%, 11/26/25 (b)	EUR		100	$	120,063
Banco Popolare, 2.75%, 7/27/20			100		116,149
Bankia SA, 4.00%, 5/22/24 (b)			100		116,828
Barclays PLC, 3.65%, 3/16/25	USD		4,320		4,309,520
BPE Financiaciones SA, 2.00%, 2/03/20	EUR		100		105,485
CaixaBank SA, 3.50%, 2/15/27 (b)			100		117,647
CIT Group, Inc.:
5.50%, 2/15/19 (c)	USD		69		72,795
5.38%, 5/15/20			410		440,750
5.00%, 8/01/23			395		426,106
Cooperatieve Rabobank UA, 3.95%, 11/09/22			1,500		1,569,260
HSBC Holdings PLC, 6.10%, 1/14/42			610		790,573
Santander Holdings USA, Inc., 4.50%, 7/17/25			2,000		2,065,676
Santander UK Group Holdings PLC, 2.88%, 8/05/21			1,250		1,254,308
Wells Fargo & Co., 3.90%, 5/01/45			2,250		2,228,566

					13,733,726
Beverages — 0.7%
Anheuser-Busch InBev Finance, Inc., 4.90%, 2/01/46 (e)			4,600		5,072,912
BWAY Holding Co., 5.50%, 4/15/24 (c)			252		257,670
Horizon Holdings I SASU, 7.25%, 8/01/23	EUR		100		121,286
Silgan Holdings, Inc., 3.25%, 3/15/25			100		114,997

					5,566,865
Biotechnology — 0.4%
Amgen, Inc., 4.40%, 5/01/45	USD		2,250		2,275,558
Gilead Sciences, Inc., 4.80%, 4/01/44			1,000		1,065,160
Senvion Holding GmbH, 3.88%, 10/25/22	EUR		100		113,796

					3,454,514
Building Materials — 0.0%
Titan Global Finance PLC, 3.50%, 6/17/21			100		118,464
Building Products — 0.2%
American Builders & Contractors Supply Co., Inc., 5.75%, 12/15/23 (c)	USD		127		134,620
Building Materials Corp. of America (c):
5.38%, 11/15/24			29		30,486



BLACKROCK CORE BOND TRUST	MAY 31, 2017	3


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Building Products (continued)
Building Materials Corp. of America (c) (continued):
6.00%, 10/15/25		USD	200	$	216,000
CPG Merger Sub LLC, 8.00%, 10/01/21 (c)			350		365,750
Masonite International Corp., 5.63%, 3/15/23 (c)			200		210,000
Ply Gem Industries, Inc., 6.50%, 2/01/22			147		153,615
Standard Industries, Inc. (c):
5.13%, 2/15/21			29		30,233
5.50%, 2/15/23			100		105,375
USG Corp. (c):
5.50%, 3/01/25			71		75,260
4.88%, 6/01/27			131		132,310

					1,453,649
Capital Markets — 2.7%
Blackstone CQP Holdco LP, 6.50%, 3/20/21 (c)			1,380		1,392,587
CDP Financial, Inc., 5.60%, 11/25/39 (c)(e)			5,890		7,589,395
Goldman Sachs Group, Inc., 3.75%, 5/22/25 (e)			8,965		9,178,098
LPL Holdings, Inc., 5.75%, 9/15/25 (c)			41		42,332
Morgan Stanley:
4.00%, 7/23/25			905		946,767
3.13%, 7/27/26			2,000		1,942,680
Raymond James Financial, Inc., 4.95%, 7/15/46			400		421,661

					21,513,520
Casinos & Gambling — 0.0%
GLP Capital LP/GLP Financing II, Inc., 5.38%, 4/15/26			64		69,280
Chemicals — 1.0%
Air Liquide Finance SA, 3.50%, 9/27/46 (c)			360		337,563
Alpha 3 BV/Alpha US Bidco, Inc., 6.25%, 2/01/25 (c)			400		408,000
Axalta Coating Systems LLC, 4.88%, 8/15/24 (c)			161		164,824
Blue Cube Spinco, Inc.:
9.75%, 10/15/23			133		162,260
10.00%, 10/15/25			95		117,800
CF Industries, Inc.:
7.13%, 5/01/20			80		88,400
5.15%, 3/15/34			60		55,500
4.95%, 6/01/43			84		74,130
Chemours Co.:
6.63%, 5/15/23			182		194,265
7.00%, 5/15/25			44		48,730


Corporate Bonds		Par (000)		Value
Chemicals (continued)
The Chemours Co., 5.38%, 5/15/27	USD		159	$	165,360
Hexion, Inc., 10.38%, 2/01/22 (c)			122		123,525
Huntsman International LLC, 4.88%, 11/15/20			299		316,940
Ineos Finance PLC, 4.00%, 5/01/23	EUR		100		116,688
Inovyn Finance PLC, 6.25%, 5/15/21			80		117,952
Methanex Corp., 3.25%, 12/15/19	USD		1,650		1,663,146
Momentive Performance Materials, Inc., 3.88%, 10/24/21			735		744,187
NOVA Chemicals Corp. (c)(d):
4.88%, 6/01/24			183		183,457
5.25%, 6/01/27			459		459,574
Platform Specialty Products Corp. (c):
10.38%, 5/01/21			37		41,024
6.50%, 2/01/22			1,118		1,151,540
PQ Corp., 6.75%, 11/15/22 (c)			269		292,537
PSPC Escrow Corp., 6.00%, 2/01/23	EUR		100		117,985
Tronox Finance LLC:
6.38%, 8/15/20	USD		141		142,410
7.50%, 3/15/22 (c)			43		44,666
Versum Materials, Inc., 5.50%, 9/30/24 (c)			81		85,050
WR Grace & Co-Conn (c):
5.13%, 10/01/21			187		199,155
5.63%, 10/01/24			80		86,300

					7,702,968
Commercial Services & Supplies — 0.8%
ADT Corp.:
3.50%, 7/15/22			252		246,330
4.13%, 6/15/23			205		203,462
4.88%, 7/15/32 (c)			262		227,940
Advanced Disposal Services, Inc., 5.63%, 11/15/24 (c)			151		154,964
Aviation Capital Group Corp. (c):
4.63%, 1/31/18			1,300		1,321,445
7.13%, 10/15/20			1,800		2,058,518
Booz Allen Hamilton, Inc., 5.13%, 5/01/25 (c)			283		289,367
Brand Energy & Infrastructure Services, Inc., 8.50%, 12/01/21 (c)			439		468,084
Covanta Holding Corp., 5.88%, 7/01/25			145		141,375
Harland Clarke Holdings Corp., 8.38%, 8/15/22 (c)			190		200,450
Iron Mountain, Inc., 6.00%, 8/15/23			80		84,800



4	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Commercial Services & Supplies (continued)
KAR Auction Services, Inc., 5.13%, 6/01/25 (c)		USD	268	$	273,360
Mobile Mini, Inc., 5.88%, 7/01/24			299		310,960
Park Aerospace Holdings Ltd., 5.25%, 8/15/22 (c)			162		169,999
Ritchie Bros Auctioneers, Inc., 5.38%, 1/15/25 (c)			125		129,375
United Rentals North America, Inc.:
7.63%, 4/15/22			13		13,569
5.75%, 11/15/24			60		63,450

					6,357,448
Communications Equipment — 0.2%
CommScope Technologies LLC, 5.00%, 3/15/27 (c)			147		147,000
CommScope, Inc., 5.00%, 6/15/21 (c)			250		256,405
Nokia OYJ, 6.63%, 5/15/39			135		152,466
Zayo Group LLC/Zayo Capital, Inc.:
6.00%, 4/01/23			834		881,955
6.38%, 5/15/25			150		161,250
5.75%, 1/15/27 (c)			273		287,985

					1,887,061
Construction & Engineering — 0.6%
BlueLine Rental Finance Corp., 9.25%, 3/15/24 (c)			701		732,545
Engility Corp., 8.88%, 9/01/24			176		189,200
ITR Concession Co. LLC, 4.20%, 7/15/25 (c)			4,000		3,975,748
SPIE SA, 3.13%, 3/22/24		EUR	100		116,828

					5,014,321
Construction Materials — 0.2%
American Tire Distributors, Inc., 10.25%, 3/01/22 (c)		USD	220		229,900
HD Supply, Inc. (c):
5.25%, 12/15/21			790		832,265
5.75%, 4/15/24			481		512,866
PulteGroup, Inc.:
5.50%, 3/01/26			76		80,323
6.00%, 2/15/35			27		27,000
Rexel SA, 3.50%, 6/15/23		EUR	100		118,468

					1,800,822
Consumer Discretionary — 0.0%
Nielsen Co. Luxembourg SARL, 5.00%, 2/01/25 (c)		USD	117		119,340
Consumer Finance — 1.8%
Ally Financial, Inc.:
6.25%, 12/01/17			320		326,880
4.63%, 3/30/25			190		190,513
8.00%, 11/01/31			1,046		1,263,045


Corporate Bonds	Par (000)			Value
Consumer Finance (continued)
Capital One Financial Corp., 4.75%, 7/15/21 (e)		USD	1,935	$	2,093,908
Cardtronics, Inc./Cardtronics USA, Inc., 5.50%, 5/01/25 (c)			55		56,375
CDK Global, Inc., 4.88%, 6/01/27 (c)			187		188,988
Corivas Campus Living USG LLC, 5.30%, 7/01/50 (a)			5,700		5,742,033
Ford Motor Credit Co. LLC:
8.13%, 1/15/20			1,530		1,746,308
4.25%, 9/20/22			1,600		1,678,205
Navient Corp.:
5.00%, 10/26/20			180		184,050
6.63%, 7/26/21			165		175,362
6.50%, 6/15/22			34		35,381
5.50%, 1/25/23			75		74,039
7.25%, 9/25/23			173		181,823
6.13%, 3/25/24			59		58,870
5.88%, 10/25/24			56		54,460
6.75%, 6/25/25			74		74,337
5.63%, 8/01/33			101		82,568
OneMain Financial Holdings LLC (c):
6.75%, 12/15/19			101		105,797
7.25%, 12/15/21			100		105,310
Springleaf Finance Corp., 6.13%, 5/15/22			50		51,645

					14,469,897
Containers & Packaging — 0.8%
Ardagh Packaging Finance PLC/Ardagh Holdings USA, Inc.:
6.00%, 6/30/21 (c)			200		206,000
4.25%, 1/15/22		EUR	32		37,179
4.25%, 9/15/22 (c)		USD	200		203,750
4.63%, 5/15/23 (c)			271		277,098
2.75%, 3/15/24		EUR	100		114,260
6.75%, 5/15/24			100		125,113
7.25%, 5/15/24 (c)		USD	1,675		1,827,844
6.00%, 2/15/25 (c)			402		419,085
Ball Corp., 5.00%, 3/15/22			141		150,694
Flex Acquisition Co., Inc., 6.88%, 1/15/25 (c)			22		23,045
JH-Holding Finance SA, (8.25% PIK), 8.25%, 12/01/22 (f)		EUR	100		122,445
Reynolds Group Issuer, Inc./Reynolds Group Issuer LLC/Reynolds Group Issuer Lu:
5.75%, 10/15/20		USD	194		199,190
6.88%, 2/15/21			305		312,239
4.66%, 7/15/21 (b)(c)			438		446,760
5.13%, 7/15/23 (c)			161		167,440
7.00%, 7/15/24 (c)			356		383,143



BLACKROCK CORE BOND TRUST	MAY 31, 2017	5


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Containers & Packaging (continued)
Sappi Papier Holding GmbH, 4.00%, 4/01/23		EUR	100	$	119,075
Sealed Air Corp., 4.88%, 12/01/22 (c)		USD	365		380,969
Signode Industrial Group Lux SA/Signode Industrial Group US, Inc., 6.38%, 5/01/22 (c)			333		347,152
Verallia Packaging SASU, 5.13%, 8/01/22		EUR	100		119,637

					5,982,118
Diversified Consumer Services — 0.3%
APX Group, Inc.:
6.38%, 12/01/19		USD	33		34,045
8.75%, 12/01/20			211		218,649
7.88%, 12/01/22			216		235,956
GW Honos Security Corp., 8.75%, 5/15/25 (c)			58		59,740
Laureate Education, Inc., 8.25%, 5/01/25 (c)			210		221,025
Prime Security Services Borrower LLC/Prime Finance, Inc., 9.25%, 5/15/23 (c)			1,358		1,484,756
Sotheby’s, 5.25%, 10/01/22 (c)			128		130,560
Tereos Finance Groupe I SA, 4.13%, 6/16/23		EUR	100		113,739

					2,498,470
Diversified Financial Services — 3.4%
Aircastle Ltd., 6.25%, 12/01/19		USD	353		383,005
ASP AMC Merger Sub, Inc., 8.00%, 5/15/25 (c)			64		62,720
Bank of America Corp.:
5.63%, 7/01/20			2,200		2,411,565
3.25%, 10/21/27			5,500		5,334,307
FBM Finance, Inc., 8.25%, 8/15/21 (c)			185		198,875
FMR LLC, 4.95%, 2/01/33 (c)(e)			2,300		2,557,057
Garfunkelux Holdco 3 SA, 8.50%, 11/01/22		GBP	100		139,153
General Electric Capital Corp., 6.15%, 8/07/37 (e)		USD	2,150		2,846,103
General Motors Financial Co., Inc., 4.25%, 5/15/23			807		834,871
IntercontinentalExchange Group, Inc., 4.00%, 10/15/23			470		503,921
Jefferies Finance LLC/JFIN Co-Issuer Corp., 7.38%, 4/01/20 (c)			595		615,081
Mercury Bondco PLC (f):
(7.13% Cash or 7.88% PIK), 7.13%, 5/30/21		EUR	100		117,109
(8.25% Cash or 9.00% PIK), 8.25%, 5/30/21			100		118,176
Moody’s Corp., 4.50%, 9/01/22 (e)		USD	1,800		1,940,922


Corporate Bonds	Par (000)			Value
Diversified Financial Services (continued)
Northern Trust Corp., 3.95%, 10/30/25 (e)		USD	8,000	$	8,567,328
Tempo Acquisition LLC/Tempo Acquisition Finance Corp., 6.75%, 6/01/25 (c)			129		131,903
UniCredit SpA:
6.95%, 10/31/22		EUR	140		189,163
5.75%, 10/28/25 (b)			107		132,190

					27,083,449
Diversified Telecommunication Services — 3.5%
AT&T, Inc. (e):
6.38%, 3/01/41		USD	520		606,712
5.15%, 3/15/42			2,400		2,449,889
4.75%, 5/15/46			2,710		2,610,462
CenturyLink, Inc.:
Series S, 6.45%, 6/15/21			437		472,506
Series T, 5.80%, 3/15/22			172		179,955
Series U, 7.65%, 3/15/42			99		93,431
Series W, 6.75%, 12/01/23			185		197,719
Series Y, 7.50%, 4/01/24			127		139,065
Cincinnati Bell, Inc., 7.00%, 7/15/24 (c)			374		392,700
Consolidated Communications, Inc., 6.50%, 10/01/22			68		67,575
Frontier Communications Corp.:
8.13%, 10/01/18			195		206,212
7.13%, 3/15/19			220		232,650
8.50%, 4/15/20			271		287,260
8.88%, 9/15/20			57		60,634
7.13%, 1/15/23			50		43,313
7.63%, 4/15/24			115		96,600
6.88%, 1/15/25			915		736,008
Level 3 Financing, Inc.:
5.38%, 8/15/22			165		169,950
5.63%, 2/01/23			149		155,519
5.13%, 5/01/23			95		98,860
5.38%, 1/15/24			165		172,941
5.38%, 5/01/25			151		158,690
5.25%, 3/15/26			459		477,218
OTE PLC, 3.50%, 7/09/20		EUR	100		115,143
SBA Communications Corp., 4.88%, 9/01/24 (c)		USD	177		179,566
Telecom Italia Capital SA:
6.38%, 11/15/33			95		102,035
6.00%, 9/30/34			380		401,728
7.20%, 7/18/36			202		232,300
7.72%, 6/04/38			48		57,600
Telecom Italia SpA, 3.63%, 1/19/24		EUR	200		247,842
Verizon Communications, Inc. (e):
6.40%, 2/15/38		USD	6,879		8,271,550
6.55%, 9/15/43			6,751		8,458,706



6	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Diversified Telecommunication Services (continued)
Windstream Corp., 7.75%, 10/01/21		USD	17	$	16,448

					28,188,787
Electric Utilities — 5.9%
AES Corp., 4.88%, 5/15/23			210		213,413
Berkshire Hathaway Energy Co., 6.50%, 9/15/37 (e)			5,515		7,396,492
Black Hills Corp., 3.15%, 1/15/27			405		394,766
Cleveland Electric Illuminating Co., 5.95%, 12/15/36			434		517,614
CMS Energy Corp., 5.05%, 3/15/22 (e)			1,832		2,022,330
Duke Energy Carolinas LLC:
6.10%, 6/01/37			640		830,047
6.00%, 1/15/38 (e)			1,675		2,161,633
4.25%, 12/15/41 (e)			750		799,007
Duke Energy Florida LLC, 6.40%, 6/15/38 (e)			770		1,050,300
E.ON International Finance BV, 6.65%, 4/30/38 (c)			3,100		3,874,665
Electricite de France SA, 5.60%, 1/27/40 (c)(e)			2,800		3,146,091
Enel Finance International NV, 3.63%, 5/25/27 (c)			1,250		1,236,565
Florida Power Corp., 6.35%, 9/15/37 (e)			2,775		3,760,713
Jersey Central Power & Light Co., 7.35%, 2/01/19			490		532,017
Ohio Power Co., Series D, 6.60%, 3/01/33 (e)			3,000		3,815,010
PacifiCorp, 6.25%, 10/15/37 (e)			1,225		1,618,893
Public Service Co. of Colorado, Series 17, 6.25%, 9/01/37 (e)			2,550		3,377,077
Southern California Edison Co.:
5.63%, 2/01/36 (e)			1,300		1,603,047
Series A, 5.95%, 2/01/38			2,175		2,810,881
Southern Co., 4.40%, 7/01/46			1,000		993,959
Talen Energy Supply LLC, 6.50%, 6/01/25			57		42,608
Virginia Electric & Power Co., Series A, 6.00%, 5/15/37 (e)			3,920		4,989,815

					47,186,943
Electrical Equipment — 0.0%
Anixter, Inc., 5.63%, 5/01/19			35		36,837
Areva SA, 4.88%, 9/23/24		EUR	50		60,425
Trionista TopCo GmbH, 6.88%, 4/30/21			110		128,666

					225,928
Electronic Equipment, Instruments & Components — 0.0%
CDW LLC/CDW Finance Corp.:
5.00%, 9/01/23		USD	134		138,355


Corporate Bonds	Par (000)			Value
Electronic Equipment, Instruments & Components (continued)
CDW LLC/CDW Finance Corp. (continued):
5.50%, 12/01/24		USD	40	$	43,200
5.00%, 9/01/25			72		74,160

					255,715
Energy Equipment & Services — 0.7%
Ensco PLC:
4.50%, 10/01/24			102		83,895
5.20%, 3/15/25			25		21,180
Enterprise Products Operating LLC, 6.13%, 10/15/39 (e)			1,400		1,687,336
Gates Global LLC/Gates Global Co., 6.00%, 7/15/22 (c)			516		525,701
Genesis Energy LP/Genesis Energy Finance Corp.:
5.75%, 2/15/21			142		144,130
6.75%, 8/01/22			17		17,531
GrafTech International Ltd., 6.38%, 11/15/20			600		523,500
Halliburton Co., 5.00%, 11/15/45			500		542,371
Noble Holding International Ltd., 4.63%, 3/01/21			8		7,200
Pattern Energy Group, Inc., 5.88%, 2/01/24 (c)			93		97,185
Pioneer Energy Services Corp., 6.13%, 3/15/22			185		160,950
Precision Drilling Corp.:
6.50%, 12/15/21			70		70,875
5.25%, 11/15/24			90		83,250
Transocean, Inc.:
6.00%, 3/15/18			195		199,875
7.38%, 4/15/18			20		20,700
5.80%, 10/15/22			331		309,485
9.00%, 7/15/23 (c)			608		635,360
6.80%, 3/15/38			47		36,543
Trinidad Drilling Ltd., 6.63%, 2/15/25 (c)			243		241,785
Weatherford International Ltd.:
7.75%, 6/15/21			185		195,245
8.25%, 6/15/23			80		84,800
9.88%, 2/15/24 (c)			106		119,250

					5,808,147
Environmental, Maintenance, & Security Service — 0.1%
Befesa Zinc SAU Via Zinc Capital SA, 8.88%, 5/15/18		EUR	100		112,948
Paprec Holding SA, 5.25%, 4/01/22			100		118,792
Tervita Escrow Corp., 7.63%, 12/01/21 (c)		USD	276		281,175

					512,915



BLACKROCK CORE BOND TRUST	MAY 31, 2017	7


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Food & Staples Retailing — 0.7%
Albertsons Cos. LLC/Safeway, Inc./New Albertson’s, Inc./Albertson’s LLC (c):
6.63%, 6/15/24		USD	151	$	156,285
5.75%, 3/15/25			149		148,255
Casino Guichard Perrachon SA:
4.73%, 5/26/21		EUR	100		132,274
4.56%, 1/25/23			100		125,875
CVS Health Corp., 5.13%, 7/20/45 (e)		USD	2,000		2,265,112
Dollar Tree, Inc., 5.75%, 3/01/23			784		830,256
Rite Aid Corp.:
6.75%, 6/15/21			211		213,374
7.70%, 2/15/27			241		255,460
Walgreens Boots Alliance, Inc., 4.80%, 11/18/44			1,000		1,051,510

					5,178,401
Food Products — 0.2%
Acosta, Inc., 7.75%, 10/01/22 (c)			240		202,800
Aramark Services, Inc., 4.75%, 6/01/26			151		156,632
B&G Foods, Inc., 5.25%, 4/01/25			96		99,360
Chobani LLC/Chobani Finance Corp., Inc., 7.50%, 4/15/25 (c)			212		222,960
Clearwater Seafoods, Inc., 6.88%, 5/01/25 (c)			51		53,295
JBS USA LLC/JBS USA Finance, Inc. (c):
7.25%, 6/01/21			30		29,925
5.88%, 7/15/24			92		89,700
5.75%, 6/15/25			326		316,424
Post Holdings, Inc. (c):
5.50%, 3/01/25			107		112,083
5.00%, 8/15/26			114		114,712
WhiteWave Foods Co., 5.38%, 10/01/22			119		134,080

					1,531,971
Health Care Equipment & Supplies — 0.4%
Crimson Merger Sub, Inc., 6.63%, 5/15/22 (c)			590		561,975
DJO Finco, Inc./DJO Finance LLC/DJO Finance Corp., 8.13%, 6/15/21 (c)			596		554,280
Fresenius Medical Care US Finance II, Inc., 4.75%, 10/15/24 (c)			80		84,401
IASIS Healthcare LLC/IASIS Capital Corp., 8.38%, 5/15/19			160		162,000
Mallinckrodt International Finance SA/Mallinckrodt CB LLC (c):
5.63%, 10/15/23			142		136,320
5.50%, 4/15/25			308		282,590


Corporate Bonds	Par (000)			Value
Health Care Equipment & Supplies (continued)
Medtronic, Inc., 4.50%, 3/15/42		USD	750	$	807,339
Teleflex, Inc.:
3.88%, 8/01/17 (g)			50		163,094
5.25%, 6/15/24			170		175,950

					2,927,949
Health Care Providers & Services — 1.6%
Acadia Healthcare Co., Inc.:
5.63%, 2/15/23			244		253,455
6.50%, 3/01/24			258		275,415
Aetna, Inc., 4.50%, 5/15/42			575		615,738
Alere, Inc., 6.38%, 7/01/23 (c)			114		123,262
Amsurg Corp., 5.63%, 7/15/22			553		577,125
Centene Corp.:
5.63%, 2/15/21			401		418,796
6.13%, 2/15/24			51		55,415
4.75%, 1/15/25			350		361,375
CHS/Community Health Systems, Inc.:
8.00%, 11/15/19			98		98,490
7.13%, 7/15/20			250		246,250
5.13%, 8/01/21			151		152,887
6.88%, 2/01/22			245		217,744
6.25%, 3/31/23			474		491,419
DaVita, Inc., 5.13%, 7/15/24			366		372,405
Eagle Holding Co. II LLC, (7.63% Cash or 8.38% PIK), 7.63%, 5/15/22 (c)(f)			177		182,581
Envision Healthcare Corp., 5.13%, 7/01/22 (c)			365		374,125
HCA, Inc.:
6.50%, 2/15/20			916		1,006,455
4.75%, 5/01/23			562		599,457
5.00%, 3/15/24			315		337,491
5.38%, 2/01/25			868		912,485
5.25%, 4/15/25			66		72,064
5.88%, 2/15/26			284		308,495
5.25%, 6/15/26			381		413,880
4.50%, 2/15/27			408		419,750
HealthSouth Corp.:
5.75%, 11/01/24			26		26,845
5.75%, 9/15/25			66		68,640
Hologic, Inc., 5.25%, 7/15/22 (c)			360		378,000
MEDNAX, Inc., 5.25%, 12/01/23 (c)			134		136,010
Molina Healthcare, Inc., 4.88%, 6/15/25 (c)(d)			71		71,533
MPH Acquisition Holdings LLC, 7.13%, 6/01/24 (c)			478		510,839
New Amethyst Corp., 6.25%, 12/01/24 (c)			98		104,860
RegionalCare Hospital Partners Holdings, Inc., 8.25%, 5/01/23 (c)			207		221,490



8	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Health Care Providers & Services (continued)
Sterigenics-Nordion Holdings LLC, 6.50%, 5/15/23 (c)		USD	95	$	97,850
Surgery Center Holdings, Inc., 8.88%, 4/15/21 (c)			48		51,300
Tenet Healthcare Corp.:
6.25%, 11/01/18			159		167,745
6.00%, 10/01/20			324		347,085
4.50%, 4/01/21			91		93,393
4.38%, 10/01/21			210		215,565
8.13%, 4/01/22			789		832,395
6.75%, 6/15/23			442		439,715
Vizient, Inc., 10.38%, 3/01/24 (c)			50		57,625
WellCare Health Plans, Inc., 5.25%, 4/01/25			58		61,118

					12,768,567
Health Care Technology — 0.0%
Change Healthcare Holdings LLC/Change Healthcare Finance, Inc., 5.75%, 3/01/25 (c)			160		164,400
Quintiles IMS, Inc., 3.25%, 3/15/25 (c)		EUR	100		115,424

					279,824
Hotels, Restaurants & Leisure — 2.5%
Burger King France SAS, 5.25%, 5/01/23 (b)			100		116,053
Caesars Entertainment Resort Properties LLC/Caesars Entertainment Resort Property, 8.00%, 10/01/20		USD	1,346		1,394,792
Codere Finance 2 Luxembourg SA, 6.75%, 11/01/21		EUR	100		116,590
Eldorado Resorts, Inc., 6.00%, 4/01/25 (c)		USD	58		60,973
ESH Hospitality, Inc., 5.25%, 5/01/25 (c)			88		89,922
International Game Technology PLC, 4.75%, 2/15/23		EUR	100		123,009
Jacobs Entertainment, Inc., 7.88%, 2/01/24 (c)		USD	96		101,280
McDonald’s Corp., 3.70%, 1/30/26			510		531,706
Melco Resorts Finance Ltd., 4.88%, 6/06/25 (c)(d)			250		251,084
MGM Resorts International:
5.25%, 3/31/20			97		103,241
6.75%, 10/01/20			162		180,023
6.63%, 12/15/21			743		834,017
7.75%, 3/15/22			20		23,450
4.63%, 9/01/26			86		86,108
New Red Finance, Inc. (c):
6.00%, 4/01/22			640		666,208
4.25%, 5/15/24			393		393,000


Corporate Bonds	Par (000)			Value
Hotels, Restaurants & Leisure (continued)
PortAventura Entertainment Barcelona BV, 7.25%, 12/01/20		EUR	100	$	116,373
Sabre GLBL, Inc. (c):
5.38%, 4/15/23		USD	62		65,023
5.25%, 11/15/23			185		192,400
Scientific Games International, Inc.:
7.00%, 1/01/22 (c)			557		594,597
10.00%, 12/01/22			575		626,031
Six Flags Entertainment Corp. (c):
4.88%, 7/31/24			289		290,806
5.50%, 4/15/27			137		141,110
Station Casinos LLC, 7.50%, 3/01/21			285		295,688
Thomas Cook Group PLC, 6.25%, 6/15/22		EUR	100		122,220
Unique Pub Finance Co. PLC:
Series A3, 6.54%, 3/30/21		GBP	2,251		3,146,004
Series A4, 5.66%, 6/30/27			1,073		1,547,391
Series M, 7.40%, 3/28/24			3,000		4,429,836
Series N, 6.46%, 3/30/32			2,390		3,020,192
Vue International Bidco PLC, 7.88%, 7/15/20			100		132,356
Yum! Brands, Inc., 3.88%, 11/01/23		USD	27		26,722

					19,818,205
Household Durables — 0.4%
AV Homes, Inc., 6.63%, 5/15/22 (c)			53		54,060
CalAtlantic Group, Inc.:
8.38%, 1/15/21			53		62,426
5.38%, 10/01/22			2		2,145
5.25%, 6/01/26			26		26,715
Century Communities, Inc., 6.88%, 5/15/22			460		482,425
Lennar Corp.:
4.13%, 1/15/22			77		78,925
4.75%, 11/15/22			32		33,405
4.88%, 12/15/23			85		88,825
4.75%, 5/30/25			180		185,112
Mattamy Group Corp., 6.88%, 12/15/23 (c)			70		70,875
Meritage Homes Corp., 5.13%, 6/06/27 (c)(d)			62		61,923
Newell Brands, Inc., 4.20%, 4/01/26			1,000		1,061,960
PulteGroup, Inc., 6.38%, 5/15/33			256		266,240
Standard Pacific Corp., 5.88%, 11/15/24			20		21,550
Tempur Sealy International, Inc., 5.50%, 6/15/26			275		276,155
TRI Pointe Group, Inc.:
4.38%, 6/15/19			10		10,250



BLACKROCK CORE BOND TRUST	MAY 31, 2017	9


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Household Durables (continued)
TRI Pointe Group, Inc. (continued):
4.88%, 7/01/21		USD	125	$	130,000
5.88%, 6/15/24			125		130,937
William Lyon Homes, Inc., 5.88%, 1/31/25			66		68,145

					3,112,073
Household Products — 0.1%
ACCO Brands Corp., 5.25%, 12/15/24 (c)			59		60,918
Prestige Brands, Inc., 6.38%, 3/01/24 (c)			154		162,855
Spectrum Brands, Inc., 6.63%, 11/15/22			170		178,925

					402,698
Independent Power and Renewable Electricity Producers — 0.2%
Calpine Corp. (c):
6.00%, 1/15/22			69		71,846
5.88%, 1/15/24			84		86,730
Dynegy, Inc.:
6.75%, 11/01/19			425		437,219
7.38%, 11/01/22			155		152,675
7.63%, 11/01/24			35		33,950
NRG Energy, Inc.:
7.88%, 5/15/21			32		33,120
6.63%, 3/15/23			25		25,753
6.25%, 5/01/24			82		82,451
6.63%, 1/15/27			440		432,300
NRG Yield Operating LLC, 5.38%, 8/15/24			75		77,437
QEP Resources, Inc., 5.38%, 10/01/22			200		195,500
TerraForm Power Operating LLC, 6.38%, 2/01/23 (c)(h)			126		130,410

					1,759,391
Industrial Conglomerates — 0.5%
General Electric Co.:
6.75%, 3/15/32 (e)			2,500		3,453,080
6.88%, 1/10/39			135		194,852
Smiths Group PLC, 3.63%, 10/12/22 (c)			360		366,587
Vertiv Group Corp, 9.25%, 10/15/24 (c)			283		305,640

					4,320,159
Insurance — 2.5%
Allied World Assurance Co. Holdings Ltd., 4.35%, 10/29/25			1,495		1,531,305
American International Group, Inc., 3.75%, 7/10/25 (e)			3,380		3,471,726
Aon PLC:
3.88%, 12/15/25			1,445		1,500,102


Corporate Bonds	Par (000)			Value
Insurance (continued)
Aon PLC (continued):
4.60%, 6/14/44		USD	500	$	519,668
Assicurazioni Generali SpA, 7.75%, 12/12/42 (b)		EUR	100		137,330
AXA SA, 5.25%, 4/16/40 (b)			500		629,219
Five Corners Funding Trust, 4.42%, 11/15/23 (c)(e)		USD	2,050		2,213,092
Groupama SA, 6.00%, 1/23/27		EUR	100		132,286
Hartford Financial Services Group, Inc., 5.13%, 4/15/22		USD	1,860		2,075,624
HUB International Ltd., 7.88%, 10/01/21 (c)			607		634,315
Liberty Mutual Group, Inc., 6.50%, 5/01/42 (c)(e)			2,000		2,559,348
Muenchener Rueckversicherungs AG, 6.00%, 5/26/41 (b)		EUR	400		537,361
Prudential Financial, Inc. (e):
5.90%, 3/17/36		USD	500		616,030
5.70%, 12/14/36			1,625		1,989,553
Radian Group, Inc., 5.25%, 6/15/20			185		196,100
Teachers Insurance & Annuity Association of America, 4.27%, 5/15/47 (c)			700		717,878
USIS Merger Sub, Inc., 6.88%, 5/01/25 (c)			80		81,000
Wayne Merger Sub LLC, 8.25%, 8/01/23 (c)			286		302,445

					19,844,382
Internet Software & Services — 0.1%
Equinix, Inc., 5.88%, 1/15/26			245		266,362
Netflix, Inc.:
4.38%, 11/15/26 (c)			452		452,588
3.63%, 5/15/27		EUR	100		115,171
Symantec Corp., 5.00%, 4/15/25 (c)		USD	124		128,650

					962,771
IT Services — 0.5%
Ceridian HCM Holding, Inc., 11.00%, 3/15/21 (c)			270		284,175
Fidelity National Information Services, Inc., 4.50%, 8/15/46			1,000		1,011,266
First Data Corp. (c):
7.00%, 12/01/23			643		694,440
5.75%, 1/15/24			1,426		1,506,212
Gartner, Inc., 5.13%, 4/01/25 (c)			207		216,315

					3,712,408
Life Sciences Tools & Services — 0.1%
Thermo Fisher Scientific, Inc., 5.30%, 2/01/44			1,000		1,150,480



10	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Machinery — 0.1%
Navistar International Corp., 8.25%, 11/01/21		USD	30	$	30,356
SPX FLOW, Inc. (c):
5.63%, 8/15/24			115		117,875
5.88%, 8/15/26			105		108,477
Terex Corp., 5.63%, 2/01/25 (c)			365		374,125
Trinseo Materials Operating SCA/Trinseo Materials Finance, Inc., 6.38%, 5/01/22		EUR	100		120,348

					751,181
Marine — 0.3%
Nakilat, Inc., Series A, 6.07%, 12/31/33 (c)		USD	2,150		2,515,500
Media — 6.1%
21st Century Fox America, Inc., 7.63%, 11/30/28			385		509,004
Adria Bidco BV, 7.88%, 11/15/20		EUR	100		117,010
Altice Financing SA (c):
6.63%, 2/15/23		USD	200		212,800
7.50%, 5/15/26			607		668,459
Altice Luxembourg SA:
7.75%, 5/15/22 (c)			200		212,500
6.25%, 2/15/25		EUR	100		123,664
Altice US Finance I Corp. (c):
5.38%, 7/15/23		USD	570		594,937
5.50%, 5/15/26			293		306,918
AMC Entertainment Holdings, Inc., 6.38%, 11/15/24		GBP	100		138,624
AMC Networks, Inc.:
4.75%, 12/15/22		USD	192		197,040
5.00%, 4/01/24			191		193,863
Cablevision Systems Corp.:
8.63%, 9/15/17			34		34,595
7.75%, 4/15/18			311		324,118
8.00%, 4/15/20			325		364,813
CBS Radio, Inc., 7.25%, 11/01/24 (c)			65		68,575
CCO Holdings LLC/CCO Holdings Capital Corp.:
5.25%, 9/30/22			175		181,454
5.13%, 5/01/23 (c)			359		377,625
5.13%, 5/01/27 (c)			1,240		1,270,225
5.88%, 5/01/27 (c)			237		252,405
Cequel Communications Holdings I LLC/Cequel Capital Corp. (c):
6.38%, 9/15/20			70		71,750
5.13%, 12/15/21			562		573,508
7.75%, 7/15/25			960		1,068,000
Charter Communications Operating LLC/Charter Communications Operating Capital, 4.91%, 7/23/25			4,700		5,101,262


Corporate Bonds	Par (000)			Value
Media (continued)
Clear Channel International BV, 8.75%, 12/15/20 (c)		USD	284	$	301,040
Clear Channel Worldwide Holdings, Inc.:
6.50%, 11/15/22			1,853		1,897,636
Series B, 7.63%, 3/15/20			430		432,150
Comcast Cable Communications Holdings, Inc., 9.46%, 11/15/22 (e)			2,600		3,510,751
Comcast Corp.:
6.45%, 3/15/37			790		1,039,926
4.60%, 8/15/45			2,000		2,152,794
Cox Communications, Inc. (c):
6.95%, 6/01/38			1,000		1,122,855
8.38%, 3/01/39 (e)			3,475		4,537,811
CSC Holdings LLC:
10.13%, 1/15/23 (c)			990		1,152,726
5.25%, 6/01/24			430		439,138
10.88%, 10/15/25 (c)			910		1,107,925
Discovery Communications LLC:
3.25%, 4/01/23			1,850		1,826,194
3.45%, 3/15/25			210		203,087
DISH DBS Corp.:
6.75%, 6/01/21			350		387,625
5.88%, 7/15/22			254		271,145
5.00%, 3/15/23			65		66,808
5.88%, 11/15/24			34		36,210
7.75%, 7/01/26			655		769,625
DISH Network Corp., 3.38%, 8/15/26 (c)(g)			175		212,734
eircom Finance DAC, 4.50%, 5/31/22		EUR	100		118,085
GTT Communications, Inc., 7.88%, 12/31/24 (c)(d)		USD	78		83,460
Hughes Satellite Systems Corp.:
7.63%, 6/15/21			64		72,640
5.25%, 8/01/26			329		338,459
6.63%, 8/01/26			24		25,440
iHeartCommunications, Inc.:
9.00%, 12/15/19			185		146,496
9.00%, 3/01/21			9		6,615
10.63%, 3/15/23			961		708,737
Impera Holdings SA, (5.38% PIK), 5.38%, 9/15/22 (f)		EUR	100		116,503
Intelsat Jackson Holdings SA:
7.25%, 4/01/19		USD	377		360,978
7.25%, 10/15/20			185		166,500
5.50%, 8/01/23			256		210,560
Interpublic Group of Cos., Inc., 3.75%, 2/15/23			2,000		2,083,718
LG Finance Co. Corp., 5.88%, 11/01/24 (c)			57		59,423
LGE HoldCo VI BV, 7.13%, 5/15/24		EUR	100		127,219



BLACKROCK CORE BOND TRUST	MAY 31, 2017	11


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Media (continued)
McGraw-Hill Global Education Holdings LLC/McGraw-Hill Global Education Finance, 7.88%, 5/15/24 (c)		USD	61	$	59,475
MDC Partners, Inc., 6.50%, 5/01/24 (c)			246		247,845
Midcontinent Communications/Midcontinent Finance Corp. (c):
6.25%, 8/01/21			340		351,900
6.88%, 8/15/23			66		71,198
Nexstar Broadcasting, Inc., 5.63%, 8/01/24 (c)			89		89,668
Numericable Group SA, 5.38%, 5/15/22		EUR	106		124,207
Outfront Media Capital LLC/Outfront Media Capital Corp., 5.25%, 2/15/22		USD	55		57,200
Qwest Corp., 6.75%, 12/01/21			64		71,567
SFR Group SA (c):
6.00%, 5/15/22			345		360,956
7.38%, 5/01/26			1,301		1,407,513
Sirius XM Radio, Inc., 4.25%, 5/15/20 (c)			463		469,482
TCI Communications, Inc., 7.88%, 2/15/26 (e)			610		822,667
TEGNA, Inc., 5.50%, 9/15/24 (c)			36		37,260
Telesat Canada/Telesat LLC, 8.88%, 11/15/24 (c)			284		318,080
Time Warner, Inc., 6.10%, 7/15/40			830		954,071
Tribune Media Co., 5.88%, 7/15/22			182		191,783
Unitymedia Hessen GmbH & Co. KG/Unitymedia NRW GmbH, 4.00%, 1/15/25		EUR	100		118,794
Univision Communications, Inc. (c):
5.13%, 5/15/23		USD	272		273,869
5.13%, 2/15/25			141		139,238
UPCB Finance IV Ltd., 4.00%, 1/15/27		EUR	100		117,830
Videotron Ltd./Videotron Ltee, 5.13%, 4/15/27 (c)		USD	162		167,670
Virgin Media Finance PLC, 5.75%, 1/15/25 (c)			515		526,587
Virgin Media Secured Finance PLC:
5.50%, 8/15/26 (c)			200		206,000
4.88%, 1/15/27		GBP	100		133,999
6.25%, 3/28/29			100		142,026
WaveDivision Escrow LLC/WaveDivision Escrow Corp., 8.13%, 9/01/20 (c)		USD	520		540,800
Wind Acquisition Finance SA:
7.00%, 4/23/21		EUR	120		140,464


Corporate Bonds	Par (000)			Value
Media (continued)
Wind Acquisition Finance SA (continued):
7.38%, 4/23/21 (c)		USD	800	$	833,600
Ziggo Bond Finance BV, 5.88%, 1/15/25 (c)			260		265,850

					48,297,761
Metal Fabricating — 0.0%
Grinding Media, Inc./MC Grinding Media Canada, Inc., 7.38%, 12/15/23 (c)			296		319,310
Park-Ohio Industries, Inc., 6.63%, 4/15/27 (c)			29		30,269

					349,579
Metals & Mining — 1.8%
Alcoa, Inc.:
5.40%, 4/15/21			340		366,092
5.13%, 10/01/24			445		473,035
5.90%, 2/01/27			70		76,475
5.95%, 2/01/37			30		30,900
Anglo American Capital PLC:
4.45%, 9/27/20 (c)			100		104,000
4.13%, 4/15/21 (c)			200		205,780
3.25%, 4/03/23		EUR	100		121,328
4.88%, 5/14/25 (c)		USD	200		207,386
ArcelorMittal:
7.50%, 10/15/39			64		71,667
7.25%, 3/01/41			216		238,680
Cliffs Natural Resources, Inc., 8.25%, 3/31/20 (c)			121		133,100
Constellium NV (c):
8.00%, 1/15/23			650		669,500
6.63%, 3/01/25			832		802,880
First Quantum Minerals Ltd. (c):
7.00%, 2/15/21			548		573,920
7.50%, 4/01/25			360		362,475
Freeport-McMoRan, Inc.:
2.30%, 11/14/17			189		188,528
2.38%, 3/15/18			1,564		1,562,436
3.10%, 3/15/20			620		610,136
4.00%, 11/14/21			121		118,120
3.55%, 3/01/22			219		204,765
3.88%, 3/15/23			774		719,356
5.40%, 11/14/34			278		246,030
5.45%, 3/15/43			737		623,222
Joseph T Ryerson & Son, Inc., 11.00%, 5/15/22 (c)			115		130,525
Kaiser Aluminum Corp., 5.88%, 5/15/24			74		78,070
Kinross Gold Corp.:
5.95%, 3/15/24			25		27,313
6.88%, 9/01/41			45		47,250



12	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Metals & Mining (continued)
Novelis Corp. (c):
6.25%, 8/15/24		USD	623	$	656,393
5.88%, 9/30/26			608		629,280
Nyrstar Netherlands Holdings BV, 6.88%, 3/15/24		EUR	100		115,975
Peabody Energy Corp. (c):
6.00%, 3/31/22		USD	43		43,215
6.38%, 3/31/25			69		69,000
Petra Diamonds US Treasury PLC, 7.25%, 5/01/22 (c)			200		207,400
Rio Tinto Finance USA Ltd., 4.75%, 3/22/42			400		442,749
Steel Dynamics, Inc.:
5.13%, 10/01/21			550		567,187
5.25%, 4/15/23			345		356,644
5.50%, 10/01/24			48		50,820
SunCoke Energy Partners LP/SunCoke Energy Partners Finance Corp., 7.50%, 6/15/25 (c)			150		147,282
Teck Resources Ltd.:
4.50%, 1/15/21			96		100,320
3.75%, 2/01/23			337		331,524
8.50%, 6/01/24 (c)			250		288,750
6.13%, 10/01/35			61		63,440
6.00%, 8/15/40			400		406,000
5.20%, 3/01/42			378		351,540
5.40%, 2/01/43			188		175,780
ThyssenKrupp AG, 1.38%, 3/03/22		EUR	75		83,887
United States Steel Corp., 8.38%, 7/01/21 (c)		USD	215		235,962

					14,316,117
Multi-Utilities — 0.1%
NGL Energy Partners LP/NGL Energy Finance Corp.:
6.88%, 10/15/21			140		141,750
7.50%, 11/01/23 (c)			244		247,050

					388,800
Multiline Retail — 0.0%
Neiman Marcus Group Ltd., 8.00%, 10/15/21 (c)			145		75,038
Oil, Gas & Consumable Fuels — 6.7%
Alta Mesa Holdings LP/Alta Mesa Finance Services Corp., 7.88%, 12/15/24 (c)			79		82,753
Anadarko Petroleum Corp., 5.55%, 3/15/26			1,500		1,685,242
Antero Midstream Partners LP/Antero Midstream Finance Corp., 5.38%, 9/15/24 (c)			35		35,831


Corporate Bonds	Par (000)			Value
Oil, Gas & Consumable Fuels (continued)
Antero Resources Corp.:
5.13%, 12/01/22		USD	52	$	52,585
5.63%, 6/01/23			51		52,275
Ascent Resources Utica Holdings LLC/ARU Finance Corp., 10.00%, 4/01/22 (c)			196		200,900
California Resources Corp., 8.00%, 12/15/22 (c)			97		72,629
Callon Petroleum Co.:
6.13%, 10/01/24			140		144,900
6.13%, 10/01/24 (c)			121		125,235
Canadian Natural Resources Ltd., 3.90%, 2/01/25			500		509,412
Carrizo Oil & Gas, Inc., 6.25%, 4/15/23			95		92,388
Cenovus Energy, Inc., 4.25%, 4/15/27 (c)			400		398,471
Cheniere Corpus Christi Holdings LLC:
7.00%, 6/30/24			178		199,360
5.88%, 3/31/25			506		543,317
5.13%, 6/30/27 (c)			350		354,812
Chesapeake Energy Corp.:
6.88%, 11/15/20			138		142,830
8.00%, 1/15/25 (c)(e)			126		125,370
8.00%, 6/15/27 (c)(d)			162		158,760
Citgo Holding, Inc., 10.75%, 2/15/20 (c)			95		102,600
ConocoPhillips, 6.50%, 2/01/39			600		777,979
ConocoPhillips Canada Funding Co., 5.95%, 10/15/36			685		843,783
CONSOL Energy, Inc.:
5.88%, 4/15/22			1,727		1,703,254
8.00%, 4/01/23			48		50,580
Continental Resources, Inc.:
4.50%, 4/15/23			17		16,618
3.80%, 6/01/24			277		258,829
4.90%, 6/01/44			190		162,568
Covey Park Energy LLC/Covey Park Finance Corp., 7.50%, 5/15/25 (c)			142		145,550
Crestwood Midstream Partners LP/Crestwood Midstream Finance Corp., 6.25%, 4/01/23			20		20,737
CrownRock LP/CrownRock Finance, Inc. (c):
7.13%, 4/15/21			525		540,750
7.75%, 2/15/23			85		90,100
DCP Midstream LLC (c):
4.75%, 9/30/21			55		55,825
6.45%, 11/03/36			128		136,320
6.75%, 9/15/37			159		172,118
Denbury Resources, Inc.:
9.00%, 5/15/21 (c)			501		513,525



BLACKROCK CORE BOND TRUST	MAY 31, 2017	13


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Oil, Gas & Consumable Fuels (continued)
Denbury Resources, Inc. (continued):
5.50%, 5/01/22		USD	118	$	85,550
4.63%, 7/15/23			20		13,350
Devon Energy Corp., 5.85%, 12/15/25			1,000		1,162,707
Diamondback Energy, Inc., 5.38%, 5/31/25 (c)			137		141,110
Eclipse Resources Corp., 8.88%, 7/15/23			45		45,338
Energy Transfer Equity LP:
5.88%, 1/15/24			544		580,720
5.50%, 6/01/27			216		227,340
Energy Transfer Partners LP:
4.05%, 3/15/25			500		508,409
4.75%, 1/15/26			1,250		1,321,717
5.30%, 4/15/47			540		545,418
Ensco Jersey Finance Ltd., 3.00%, 1/31/24 (c)(g)			165		139,013
Enterprise Products Operating LLC, 3.70%, 2/15/26			500		513,591
EOG Resources, Inc.:
4.15%, 1/15/26			1,000		1,065,585
5.10%, 1/15/36			200		221,094
EP Energy LLC/Everest Acquisition Finance, Inc.:
9.38%, 5/01/20			221		202,215
8.00%, 11/29/24 (c)			173		178,623
Extraction Oil & Gas Holdings LLC/Extraction Finance Corp., 7.88%, 7/15/21 (c)			208		217,360
Great Western Petroleum LLC/Great Western Finance, Inc., 9.00%, 9/30/21 (c)			210		215,775
Gulfport Energy Corp.:
6.63%, 5/01/23			51		51,383
6.00%, 10/15/24 (c)			108		105,840
Halcon Resources Corp., 6.75%, 2/15/25 (c)			579		539,917
Hess Corp., 4.30%, 4/01/27			1,100		1,104,543
KeySpan Gas East Corp., 5.82%, 4/01/41 (c)(e)			1,010		1,263,676
Kinder Morgan, Inc.:
4.30%, 6/01/25			1,750		1,836,222
5.05%, 2/15/46			1,750		1,765,697
Marathon Petroleum Corp., 6.50%, 3/01/41 (e)			2,049		2,358,792
Matador Resources Co., 6.88%, 4/15/23			590		619,500
MEG Energy Corp. (c):
6.38%, 1/30/23			15		12,863
7.00%, 3/31/24			481		416,065
6.50%, 1/15/25			528		516,120


Corporate Bonds	Par (000)			Value
Oil, Gas & Consumable Fuels (continued)
MidAmerican Energy Co., 5.80%, 10/15/36 (e)		USD	1,500	$	1,873,065
MidAmerican Energy Holdings Co., 5.95%, 5/15/37			1,750		2,199,183
Murphy Oil Corp.:
6.88%, 8/15/24			177		185,407
6.13%, 12/01/42			45		42,863
Nabors Industries, Inc., 0.75%, 1/15/24 (c)(g)			262		214,840
New Enterprise Stone & Lime Co., Inc., 10.13%, 4/01/22 (c)			108		114,480
Newfield Exploration Co., 5.63%, 7/01/24			75		79,500
NGPL PipeCo LLC (c):
7.12%, 12/15/17			623		637,017
7.77%, 12/15/37			356		422,750
Noble Holding International Ltd., 7.75%, 1/15/24			250		220,547
Oasis Petroleum, Inc.:
6.50%, 11/01/21			112		113,680
2.63%, 9/15/23 (g)			145		157,959
ONEOK, Inc.:
7.50%, 9/01/23			213		253,869
6.00%, 6/15/35			25		26,500
Paramount Resources Ltd., 6.88%, 6/30/23 (c)			500		528,750
Parker Drilling Co.:
7.50%, 8/01/20			165		152,831
6.75%, 7/15/22			104		89,440
Parsley Energy LLC/Parsley Finance Corp. (c):
6.25%, 6/01/24			48		50,640
5.38%, 1/15/25			209		211,612
5.25%, 8/15/25			52		52,390
PBF Holding Co. LLC/PBF Finance Corp.:
8.25%, 2/15/20			94		96,256
7.25%, 6/15/25 (c)			143		141,213
Petroleos Mexicanos, 5.38%, 3/13/22 (c)			27		28,760
Plains All American Pipeline LP/PAA Finance Corp., 3.65%, 6/01/22			1,000		1,025,019
Precision Drilling Corp., 7.75%, 12/15/23 (c)			50		51,625
QEP Resources, Inc., 5.25%, 5/01/23			33		32,010
Range Resources Corp. (c):
5.88%, 7/01/22			324		331,290
5.00%, 8/15/22			53		52,073
5.00%, 3/15/23			95		92,625
Resolute Energy Corp.:
8.50%, 5/01/20			159		161,783
8.50%, 5/01/20 (c)			120		122,100



14	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Oil, Gas & Consumable Fuels (continued)
Rockies Express Pipeline LLC (c):
5.63%, 4/15/20		USD	565	$	601,725
6.88%, 4/15/40			239		259,315
Rowan Cos., Inc.:
4.88%, 6/01/22			50		47,438
7.38%, 6/15/25			407		398,860
RSP Permian, Inc.:
6.63%, 10/01/22			179		188,621
5.25%, 1/15/25 (c)			102		103,275
Sabine Pass Liquefaction LLC, 5.88%, 6/30/26			1,750		1,974,460
Sanchez Energy Corp.:
7.75%, 6/15/21			322		303,485
6.13%, 1/15/23			633		557,040
SESI LLC:
6.38%, 5/01/19			60		59,100
7.13%, 12/15/21			60		59,850
SM Energy Co.:
6.50%, 11/15/21			50		50,500
6.13%, 11/15/22			109		107,842
5.00%, 1/15/24			5		4,625
5.63%, 6/01/25			285		267,812
6.75%, 9/15/26			93		91,140
Southwestern Energy Co., 5.80%, 1/23/20			690		700,350
Suncor Energy, Inc., 6.50%, 6/15/38			1,000		1,280,482
Sunoco Logistics Partners Operations LP, 3.90%, 7/15/26			310		310,508
Tallgrass Energy Partners LP/Tallgrass Energy Finance Corp. (c):
5.50%, 9/15/24			276		280,140
5.13%, 2/01/25			77		79,695
5.38%, 2/01/27			52		54,210
Targa Resources Partners LP/Targa Resources Partners Finance Corp.:
6.38%, 8/01/22			60		61,950
5.25%, 5/01/23			10		10,313
Tesoro Corp. (c):
4.75%, 12/15/23			298		313,645
5.13%, 12/15/26			484		517,880
Tesoro Logistics LP/Tesoro Logistics Finance Corp.:
6.13%, 10/15/21			26		27,121
6.25%, 10/15/22			45		48,150
TransCanada PipeLines Ltd., 4.63%, 3/01/34			500		542,654
Tutor Perini Corp., 6.88%, 5/01/25 (c)			94		98,348
Ultra Resources, Inc., 6.88%, 4/15/22 (c)			40		40,350


Corporate Bonds	Par (000)			Value
Oil, Gas & Consumable Fuels (continued)
Weatherford International LLC, 6.80%, 6/15/37		USD	60	$	55,800
Weatherford International Ltd.:
6.50%, 8/01/36			165		152,562
7.00%, 3/15/38			169		158,015
5.95%, 4/15/42			129		110,618
Western Gas Partners LP, 5.38%, 6/01/21			1,425		1,543,960
Whiting Petroleum Corp.:
5.00%, 3/15/19			480		478,800
5.75%, 3/15/21			18		17,658
WildHorse Resource Development Corp., 6.88%, 2/01/25 (c)			157		152,290
Williams Cos., Inc., 5.75%, 6/24/44			647		674,899
Williams Partners LP:
3.90%, 1/15/25			1,150		1,178,329
4.00%, 9/15/25			750		770,326
WPX Energy, Inc.:
7.50%, 8/01/20			50		52,750
6.00%, 1/15/22			61		61,610
8.25%, 8/01/23			125		136,875
5.25%, 9/15/24			145		140,650

					53,431,842
Paper & Forest Products — 0.2%
International Paper Co., 6.00%, 11/15/41			870		1,050,858
Mercer International, Inc., 6.50%, 2/01/24 (c)			76		79,040
Pfleiderer GmbH, 7.88%, 8/01/19		EUR	100		115,979

					1,245,877
Pharmaceuticals — 2.1%
AbbVie, Inc.:
3.60%, 5/14/25		USD	870		890,492
3.20%, 5/14/26			500		492,878
4.45%, 5/14/46			2,095		2,094,960
Actavis Funding SCS:
3.80%, 3/15/25			3,250		3,364,644
4.55%, 3/15/35 (e)			2,140		2,218,716
Baxalta, Inc., 5.25%, 6/23/45			500		570,669
Endo Finance LLC/Endo Finco, Inc. (c):
5.38%, 1/15/23			62		56,265
6.00%, 7/15/23			315		290,194
5.88%, 10/15/24			205		211,919
Forest Laboratories LLC, 5.00%, 12/15/21 (c)			758		834,249
inVentiv Group Holdings, Inc./inVentiv Health, Inc./inVentiv Health Clinical, Inc., 7.50%, 10/01/24 (c)			269		292,874



BLACKROCK CORE BOND TRUST	MAY 31, 2017	15


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Pharmaceuticals (continued)
Jaguar Holding Co. II/Pharmaceutical Product Development LLC, 6.38%, 8/01/23 (c)		USD	795	$	840,712
Mylan NV, 3.95%, 6/15/26			750		752,647
NBTY, Inc., 7.63%, 5/15/21 (c)			323		337,535
Synlab Bondco PLC, 6.25%, 7/01/22		EUR	100		122,024
Tennessee Merger Sub, Inc., 6.38%, 2/01/25 (c)		USD	489		474,941
Teva Pharmaceutical Finance Netherlands III BV, 4.10%, 10/01/46			500		440,743
Valeant Pharmaceuticals International, Inc. (c):
6.75%, 8/15/18			330		332,681
7.00%, 10/01/20			100		95,500
6.38%, 10/15/20			405		380,700
5.63%, 12/01/21			409		350,718
6.50%, 3/15/22			204		214,159
5.88%, 5/15/23			220		179,163
7.00%, 3/15/24			320		338,403
6.13%, 4/15/25			196		157,780

					16,335,566
Real Estate Investment Trusts (REITs) — 1.3%
ERP Operating LP, 4.50%, 6/01/45			1,155		1,214,525
HCP, Inc., 4.00%, 6/01/25 (e)			2,000		2,050,378
Hilton Domestic Operating Co., Inc., 4.25%, 9/01/24 (c)			67		67,670
iStar, Inc., 6.00%, 4/01/22			67		68,173
MGM Growth Properties Operating Partnership LP/MGP Finance Co-Issuer, Inc.:
5.63%, 5/01/24			806		869,472
4.50%, 9/01/26			187		187,000
NH Hotel Group SA, 3.75%, 10/01/23		EUR	128		150,978
Simon Property Group LP, 4.75%, 3/15/42		USD	1,670		1,766,880
Starwood Property Trust, Inc., 5.00%, 12/15/21 (c)			157		163,673
Ventas Realty LP, 4.13%, 1/15/26			870		901,583
Ventas Realty LP/Ventas Capital Corp., 4.75%, 6/01/21			550		591,620
Wyndham Worldwide Corp., 4.15%, 4/01/24			2,000		2,063,520

					10,095,472
Real Estate Management & Development — 0.7%
Aroundtown Property Holdings PLC, 1.50%, 1/18/21 (g)		EUR	100		123,692


Corporate Bonds	Par (000)			Value
Real Estate Management & Development (continued)
The Howard Hughes Corp., 5.38%, 3/15/25 (c)		USD	101	$	104,156
Northwest Florida Timber Finance LLC, 4.75%, 3/04/29 (c)(e)			4,600		4,393,000
Realogy Group LLC/Realogy Co-Issuer Corp. (c):
4.50%, 4/15/19			120		124,500
5.25%, 12/01/21			133		139,650
4.88%, 6/01/23			409		412,068

					5,297,066
Road & Rail — 1.2%
Avis Budget Car Rental LLC/Avis Budget Finance, Inc. (c):
5.13%, 6/01/22 (e)			435		422,494
5.25%, 3/15/25			160		147,900
Avis Budget Finance PLC, 4.13%, 11/15/24		EUR	100		108,403
Burlington Northern Santa Fe LLC, 5.75%, 5/01/40 (e)		USD	1,890		2,387,573
CSX Corp., 4.75%, 5/30/42			350		384,457
Herc Rentals, Inc. (c):
7.50%, 6/01/22			106		112,625
7.75%, 6/01/24			92		98,210
Hertz Corp.:
7.38%, 1/15/21			170		160,331
7.63%, 6/01/22 (c)			290		290,000
5.50%, 10/15/24 (c)			3		2,408
Hertz Holdings Netherlands BV, 4.13%, 10/15/21		EUR	100		106,128
Lima Metro Line 2 Finance Ltd., 5.88%, 7/05/34 (c)		USD	5,000		5,325,000
United Rentals North America, Inc.:
6.13%, 6/15/23			37		39,054
5.50%, 7/15/25			125		131,750

					9,716,333
Semiconductors & Semiconductor Equipment — 0.8%
Advanced Micro Devices, Inc., 7.50%, 8/15/22			51		56,291
Analog Devices, Inc.:
3.90%, 12/15/25			470		491,593
3.50%, 12/05/26			345		349,487
Broadcom Corp./Broadcom Cayman Finance Ltd., 3.88%, 1/15/27 (c)			2,850		2,897,381
Microchip Technology, Inc., 2.13%, 12/15/37			40		140,925
Micron Technology, Inc.:
5.25%, 8/01/23 (c)			206		211,665
5.50%, 2/01/25			7		7,302
Series G, 3.00%, 11/15/43 (g)			485		555,628
Microsemi Corp., 9.13%, 4/15/23 (c)			14		16,135



16	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds	Par (000)			Value
Semiconductors & Semiconductor Equipment (continued)
NXP BV/NXP Funding LLC (c):
4.13%, 6/15/20		USD	420	$	442,050
4.13%, 6/01/21			278		293,290
3.88%, 9/01/22			200		208,750
5.75%, 3/15/23			260		275,033
QUALCOMM, Inc., 4.65%, 5/20/35			250		271,421
Sensata Technologies BV, 5.00%, 10/01/25 (c)			230		238,768

					6,455,719
Software — 1.8%
ACI Worldwide, Inc., 6.38%, 8/15/20 (c)			320		328,200
BMC Software Finance, Inc., 8.13%, 7/15/21 (c)			1,181		1,206,155
CA, Inc., 3.60%, 8/15/22			705		729,841
Ensemble S Merger Sub, Inc., 9.00%, 9/30/23 (c)			210		218,925
Genesys Telecommunications Laboratories Inc/Greeneden Lux 3 Sarl/Greeneden US Ho, 10.00%, 11/30/24 (c)			115		128,800
Inception Merger Sub, Inc./Rackspace Hosting, Inc., 8.63%, 11/15/24 (c)			319		340,035
Infinity Acquisition LLC/Infinity Acquisition Finance Corp., 7.25%, 8/01/22 (c)			31		29,760
Infor US, Inc., 6.50%, 5/15/22			976		1,016,260
Informatica LLC, 7.13%, 7/15/23 (c)			187		188,403
JDA Escrow LLC/JDA Bond Finance, Inc., 7.38%, 10/15/24 (c)			152		157,700
Microsoft Corp., 3.50%, 11/15/42 (e)			4,000		3,848,936
Nuance Communications, Inc. (c):
5.38%, 8/15/20			39		39,731
6.00%, 7/01/24			170		180,625
5.63%, 12/15/26			69		72,623
Oracle Corp., 5.38%, 7/15/40 (e)			3,025		3,632,971
PTC, Inc., 6.00%, 5/15/24			71		75,659
Solera LLC/Solera Finance, Inc., 10.50%, 3/01/24 (c)			557		637,765
SS&C Technologies Holdings, Inc., 5.88%, 7/15/23			227		242,578
TIBCO Software, Inc., 11.38%, 12/01/21 (c)			565		624,325
Veritas US, Inc./Veritas Bermuda Ltd.:
7.50%, 2/01/23 (c)			200		214,000
7.50%, 2/01/23		EUR	100		120,198


Corporate Bonds	Par (000)			Value
Software (continued)
Veritas US, Inc./Veritas Bermuda Ltd. (continued):
10.50%, 2/01/24 (c)		USD	600	$	649,500

					14,682,990
Specialty Retail — 0.5%
Asbury Automotive Group, Inc., 6.00%, 12/15/24			269		275,221
Group 1 Automotive, Inc., 5.00%, 6/01/22			110		111,650
Home Depot, Inc., 5.88%, 12/16/36			1,660		2,158,901
JC Penney Corp., Inc.:
8.13%, 10/01/19			28		31,045
6.38%, 10/15/36			14		10,220
7.40%, 4/01/37			52		40,040
L Brands, Inc., 6.88%, 11/01/35			251		244,097
Lowe’s Cos, Inc., 4.38%, 9/15/45			1,000		1,069,324
Penske Automotive Group, Inc., 5.50%, 5/15/26			22		21,945
PetSmart, Inc. (c):
5.88%, 6/01/25			93		93,349
8.88%, 6/01/25			28		27,580

					4,083,372
Technology Hardware, Storage & Peripherals — 0.7%
Apple, Inc., 4.65%, 2/23/46 (e)			2,400		2,673,091
Diamond 1 Finance Corp./Diamond 2 Finance Corp. (c):
4.42%, 6/15/21			20		21,076
7.13%, 6/15/24			438		488,131
6.02%, 6/15/26			110		121,422
8.35%, 7/15/46			45		57,795
Hewlett Packard Enterprise Co., 4.90%, 10/15/25			1,500		1,586,934
Riverbed Technology, Inc., 8.88%, 3/01/23 (c)			155		155,388
Western Digital Corp.:
7.38%, 4/01/23 (c)			384		420,288
10.50%, 4/01/24			117		137,124

					5,661,249
Textiles, Apparel & Luxury Goods — 0.0%
BiSoho SAS, 5.88%, 5/01/23		EUR	90		110,207
Hanesbrands, Inc., 4.63%, 5/15/24 (c)		USD	36		36,000
Springs Industries, Inc., 6.25%, 6/01/21			36		37,170

					183,377



BLACKROCK CORE BOND TRUST	MAY 31, 2017	17


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Corporate Bonds		Par (000)		Value
Thrifts & Mortgage Finance — 0.0%
Ladder Capital Finance Holdings LLLP/Ladder Capital Finance Corp., 5.25%, 3/15/22 (c)	USD		239	$	245,274
Tobacco — 1.5%
Altria Group, Inc.:
9.95%, 11/10/38			516		872,428
10.20%, 2/06/39			894		1,536,556
5.38%, 1/31/44 (e)			4,030		4,796,462
3.88%, 9/16/46			1,250		1,194,657
Reynolds American, Inc.:
4.45%, 6/12/25			635		684,268
7.00%, 8/04/41			1,000		1,237,267
5.85%, 8/15/45			1,500		1,816,696

					12,138,334
Transportation Infrastructure — 0.4%
CEVA Group PLC, 7.00%, 3/01/21 (c)			310		280,550
CMA CGM SA, 7.75%, 1/15/21	EUR		100		117,334
I 595 Express LLC, 3.31%, 12/31/31 (a)	USD		1,340		1,323,624
Penske Truck Leasing Co. LP/PTL Finance Corp., 3.40%, 11/15/26 (c)			490		481,125
Transurban Finance Co. Property Ltd., 4.13%, 2/02/26 (c)			580		605,444

					2,808,077
Utilities — 0.0%
ContourGlobal Power Holdings SA, 5.13%, 6/15/21	EUR		100		118,620
Wireless Telecommunication Services — 2.0%
Communications Sales & Leasing, Inc./CSL Capital LLC:
6.00%, 4/15/23 (c)	USD		101		105,798
8.25%, 10/15/23			454		477,835
7.13%, 12/15/24 (c)			133		133,333
Crown Castle Towers LLC, 6.11%, 1/15/40 (c)			3,155		3,415,787
CyrusOne LP/CyrusOne Finance Corp. (c):
5.00%, 3/15/24			210		214,725
5.38%, 3/15/27			15		15,450
Digicel Ltd., 6.00%, 4/15/21 (c)			1,550		1,499,206
GEO Group, Inc.:
5.13%, 4/01/23			278		279,390
6.00%, 4/15/26			117		121,095
Matterhorn Telecom SA, 3.25%, 2/01/23 (b)	EUR		100		112,756
Radiate Holdco LLC/Radiate Finance, Inc., 6.63%, 2/15/25 (c)	USD		243		248,467


Corporate Bonds		Par (000)		Value
Wireless Telecommunication Services (continued)
Rogers Communications, Inc., 7.50%, 8/15/38	USD		2,325	$	3,166,101
Sprint Capital Corp.:
6.90%, 5/01/19			140		151,025
6.88%, 11/15/28			844		935,785
8.75%, 3/15/32			110		138,669
Sprint Communications, Inc. (c):
9.00%, 11/15/18			536		588,260
7.00%, 3/01/20			380		421,800
Sprint Corp.:
7.25%, 9/15/21			240		272,474
7.88%, 9/15/23			681		786,555
7.13%, 6/15/24			1,006		1,131,624
7.63%, 2/15/25			120		138,000
T-Mobile USA, Inc.:
4.00%, 4/15/22			132		136,794
6.00%, 3/01/23			205		218,059
6.84%, 4/28/23			40		42,800
6.50%, 1/15/24			240		259,860
6.38%, 3/01/25			37		40,099
5.13%, 4/15/25			135		140,752
5.38%, 4/15/27			81		86,265
Trilogy International Partners LLC/Trilogy International Finance, Inc., 8.88%, 5/01/22 (c)			70		73,325
Uniti Group, Inc./Uniti Fiber Holdings, Inc./CSL Capital LLC, 7.13%, 12/15/24 (c)			105		105,788
Xplornet Communications, Inc., (9.63% Cash or 10.63% PIK), 9.63%, 6/01/22 (c)(f)			59		61,360

					15,519,237
Total Corporate Bonds — 67.8%					539,611,863



Floating Rate Loan Interests (b)
Air Freight & Logistics — 0.0%
CEVA Group PLC, Synthetic LOC, 6.50%, 3/19/21			18		15,993
CEVA Intercompany BV, Dutch Term Loan, 6.67%, 3/19/21			19		16,809
CEVA Logistics Canada ULC, Canadian Term Loan, 6.67%, 3/19/21			3		2,508
CEVA Logistics US Holdings, Inc., Term Loan, 6.67%, 3/19/21			27		23,891

					59,201



18	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Floating Rate Loan Interests (b)		Par (000)		Value
Auto Components — 0.0%
USI, Inc., 2017 Term Loan B, 4.18%, 5/16/24	USD		56	$	55,902
Chemicals — 0.0%
Alpha 3 BV, 2017 Term Loan B1, 4.15%, 1/31/24			81		81,380
MacDermid, Inc., Term Loan B5, 4.54%, 6/07/20			60		60,946

					142,326
Commercial Services & Supplies — 0.1%
Brand Energy & Infrastructure Services, Inc., Term Loan B, 4.90% - 4.93%, 11/26/20			118		118,365
Garda World Security Corp., 2017 Term Loan, 5.04%, 5/24/24			125		125,304

					243,669
Diversified Consumer Services — 0.0%
Laureate Education, Inc., 2017 Term Loan B, 5.54%, 4/26/24			80		80,143
Diversified Telecommunication Services — 0.2%
CenturyLink, Inc., 2017 Term Loan B, 3.93%, 1/31/25			1,192		1,189,664
Digicel International Finance Ltd., 2017 Term Loan B, 4.94%, 5/08/24			279		281,268
Zayo Group LLC, 2017 Term Loan B2, 3.51%, 1/19/24			280		282,000

					1,752,932
Electrical Equipment — 0.0%
Gates Global LLC, 2017 Term Loan B, 4.41%, 4/01/24			198		198,891
Energy Equipment & Services — 0.0%
Weatherford International Ltd., Term Loan, 3.35%, 7/13/20 (a)			193		190,498
Food & Staples Retailing — 0.0%
BJ’s Wholesale Club, Inc., 2017 1st Lien Term Loan, 4.75%, 2/03/24			131		130,728
Food Products — 0.0%
Chobani LLC, 1st Lien Term Loan, 5.29%, 10/07/23			41		41,538
Health Care Equipment & Supplies — 0.1%
DJO Finance LLC, 2015 Term Loan, 4.25% - 4.29%, 6/08/20			220		217,019
Immucor, Inc., Refinancing Term Loan B2, 5.00%, 8/17/18			385		383,204


Floating Rate Loan Interests (b)		Par (000)		Value
Health Care Equipment & Supplies (continued)
Ortho-Clinical Diagnostics, Inc., Term Loan B, 4.78%, 6/30/21	USD		20	$	20,010

					620,233
Health Care Providers & Services — 0.1%
Iasis Healthcare LLC, Term Loan B3, 5.25%, 2/16/21			44		44,385
inVentiv Health, Inc., 2016 Term Loan B, 4.80%, 11/09/23			80		80,634
Team Health Holdings, Inc., 1st Lien Term Loan, 3.79%, 2/06/24			154		153,085
Vizient, Inc., 2017 Term Loan B, 4.50%, 2/13/23			68		68,893

					346,997
Hotels, Restaurants & Leisure — 0.2%
Amaya Holdings BV, Repriced Term Loan B, 4.65%, 8/01/21			208		207,904
Burger King Newco Unlimited Liability Co., Term Loan B3, 3.25% - 3.40%, 2/16/24			78		78,117
Caesars Entertainment Resort Properties LLC, Term Loan B, 4.54%, 10/11/20			1,365		1,371,748

					1,657,769
Industrial Conglomerates — 0.1%
Cortes NP Acquisition Corp., 2017 Term Loan B, 5.00%, 11/30/23			320		323,027
Sequa Corp.:
1st Lien Term Loan, 6.67%, 11/28/21			115		115,648
2nd Lien Term Loan, 10.17%, 4/28/22 (a)			40		40,800

					479,475
Insurance — 0.0%
Alliant Holdings I, Inc., 2015 Term Loan B, 4.42%, 8/12/22			81		81,259
IT Services — 0.0%
NeuStar, Inc.:
Term Loan B1, 3.25%, 8/28/19			31		31,414
Term Loan B2, 4.90%, 2/28/24			85		85,700

					117,114
Machinery — 0.1%
Silver II US Holdings LLC, Term Loan, 4.15%, 12/13/19			622		618,989



BLACKROCK CORE BOND TRUST	MAY 31, 2017	19


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Floating Rate Loan Interests (b)		Par (000)		Value
Media — 0.2%
CSC Holdings LLC, 2017 1st Lien Term Loan, 3.25%, 7/17/25	USD		38	$	38,066
iHeartCommunications, Inc., Term Loan D, 7.79%, 1/30/19			211		173,646
Intelsat Jackson Holdings SA, Term Loan B2, 3.89%, 6/30/19			924		911,865
Ziggo Secured Finance Partnership, Term Loan E, 3.49%, 4/15/25			149		148,937

					1,272,514
Multiline Retail — 0.0%
Neiman Marcus Group, Inc., 2020 Term Loan, 4.25%, 10/25/20			188		146,170
Oil, Gas & Consumable Fuels — 0.3%
California Resources Corp.:
Second Out Term Loan, 11.38%, 12/31/21			354		391,612
Term Loan A, 4.04%, 10/01/19			331		319,565
Chesapeake Energy Corp., Term Loan, 8.69%, 8/23/21			1,239		1,334,766

					2,045,943
Professional Services — 0.0%
Advantage Sales & Marketing, Inc., 2014 1st Lien Term Loan, 4.29%, 7/23/21			178		176,136
Information Resources, Inc., 1st Lien Term Loan, 5.26%, 1/18/24			49		49,444

					225,580
Software — 0.3%
BMC Software Finance, Inc., 2017 Term Loan, 5.00%, 9/13/22			347		348,804
CCC Information Services, Inc.:
2017 1st Lien Term Loan, 4.04%, 4/27/24			75		75,269
2017 2nd Lien Term Loan, 7.79%, 4/27/25			23		23,496
Infor US, Inc., Term Loan B6, 3.90%, 2/01/22			148		147,965
Kronos, Inc., 2nd Lien Term Loan, 9.42%, 11/01/24			353		366,159
MA FinanceCo. LLC, Term Loan B3, 3.00%, 4/29/24			13		12,946
Misys Europe SA:
1st Lien Term Loan, 4.67%, 4/27/24			224		224,430
2nd Lien Term Loan, 8.25%, 4/27/25			49		49,943


Floating Rate Loan Interests (b)		Par (000)		Value
Software (continued)
Project Alpha Intermediate Holding, Inc., 2017 Term Loan B, 4.67%, 4/26/24	USD		110	$	109,496
Seattle Spinco, Inc., Term Loan B3, 2.75%, 4/19/24			87		87,427
Tempo Acquisition LLC, Term Loan, 4.00%, 5/01/24			150		150,482
Veritas US, Inc., Term Loan B1, 6.77%, 1/27/23			941		941,378

					2,537,795
Textiles, Apparel & Luxury Goods — 0.0%
Ascend Performance Materials Operations LLC, Term Loan B, 6.65%, 8/12/22			186		187,742
Total Floating Rate Loan Interests — 1.7%					13,233,408


Foreign Agency Obligations
Argentine Republic Government International Bond:
7.50%, 4/22/26			3,875		4,274,125
7.63%, 4/22/46			3,121		3,317,623
Cyprus Government International Bond, 4.63%, 2/03/20 (c)	EUR		1,210		1,492,188
Iceland Government International Bond, 5.88%, 5/11/22	USD		3,555		4,093,408
Italian Government International Bond, 5.38%, 6/15/33			2,925		3,284,795
Portugal Government International Bond, 5.13%, 10/15/24 (c)			3,970		4,029,550
Slovenia Government International Bond, 5.85%, 5/10/23 (c)			864		1,010,232
Total Foreign Agency Obligations — 2.7%					21,501,921


Municipal Bonds
City of New York New York Municipal Water Finance Authority, Refunding RB, 2nd General Resolution:
Series EE, 5.50%, 6/15/43			930		1,056,889
Series GG, Build America Bonds, 5.72%, 6/15/42			1,390		1,824,820
Water & Sewer System, Series EE, 5.38%, 6/15/43			770		870,331
East Bay Municipal Utility District, RB, Build America Bonds, 5.87%, 6/01/40			1,900		2,446,326



20	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Municipal Bonds		Par (000)		Value
Indianapolis Local Public Improvement Bond Bank, RB, Build America Bonds, 6.12%, 1/15/40	USD		2,535	$	3,242,544
Metropolitan Transportation Authority, RB, Build America Bonds, Series C, 7.34%, 11/15/39			1,295		1,942,694
Municipal Electric Authority of Georgia Plant Vogtle Units 3 & 4, Refunding RB, Build America Bonds, Series A, 7.06%, 4/01/57			2,000		2,214,300
New York State Dormitory Authority, RB, Build America Bonds:
5.63%, 3/15/39			1,100		1,354,067
5.60%, 3/15/40			1,900		2,377,926
Port Authority of New York & New Jersey, RB, 159th Series, 6.04%, 12/01/29			780		996,536
State of California, GO, Build America Bonds:
Various Purpose, 7.55%, 4/01/39			280		422,198
Various Purposes, 7.63%, 3/01/40			1,720		2,583,715
State of Illinois, GO, Pension, 5.10%, 6/01/33			2,000		1,802,760
University of California, RB, Build America Bonds, 5.95%, 5/15/45			885		1,112,410
Total Municipal Bonds — 3.0%					24,247,516



Non-Agency Mortgage-Backed Securities
Collateralized Mortgage Obligations — 0.6%
Banc of America Funding Corp., Series 2007-2, Class 1A2, 6.00%, 3/25/37			623		623,146
Countrywide Alternative Loan Trust:
Series 2005-64CB, Class 1A15, 5.50%, 12/25/35			1,309		1,287,180
Series 2006-OA21, Class A1, 1.20%, 3/20/47 (b)			936		788,932
Credit Suisse Mortgage Capital Certificates, Series 2011-2R, Class 2A1, 3.19%, 7/27/36 (b)(c)			323		322,769


Non-Agency Mortgage-Backed Securities		Par (000)		Value
Collateralized Mortgage Obligations (continued)
GMAC Mortgage Corp. Loan Trust, Series 2005-AR3, Class 5A1, 3.84%, 6/19/35 (b)	USD		484	$	474,954
GSR Mortgage Loan Trust:
Series 2006-4F, Class 1A1, 5.00%, 5/25/36			90		89,252
Series 2007-4F, Class 3A1, 6.00%, 7/25/37			232		210,196
JPMorgan Mortgage Trust, Series 2006-S3, Class 1A12, 6.50%, 8/25/36			85		76,496
Merrill Lynch Mortgage Investors, Inc., Series 2006-A3, Class 3A1, 3.55%, 5/25/36 (b)			646		538,258
WaMu Mortgage Pass-Through Certificates, Series 2007-OA4, Class 1A, 1.46%, 5/25/47 (b)			232		209,612

					4,620,795
Commercial Mortgage-Backed Securities — 10.5%
Banc of America Merrill Lynch Commercial Mortgage Securities Trust, Series 2015-200P, Class C, 3.60%, 4/14/33 (b)(c)			4,170		4,263,660
Citigroup Commercial Mortgage Trust:
Series 2013-GC15, Class B, 5.11%, 9/10/46 (b)			7,183		7,996,073
Series 2016-P5, Class A4, 2.94%, 10/10/49			6,000		5,957,086
Citigroup/Deutsche Bank Commercial Mortgage Trust, Series 2006-CD3, Class AM, 5.65%, 10/15/48			1,720		1,752,327
Commercial Mortgage Trust:
Series 2008-LS1, Class A4B, 6.11%, 12/10/49 (b)			757		760,181
Series 2013-300P, Class A1, 4.35%, 8/10/30 (c)			1,330		1,454,494
Series 2013-CR11, Class B, 5.16%, 8/10/50 (b)			7,000		7,719,708
Series 2013-LC6, Class B, 3.74%, 1/10/46			1,390		1,428,360
Series 2014-CR21, Class A3, 3.53%, 12/10/47			1,300		1,356,714
Series 2015-3BP, Class A, 3.18%, 2/10/35 (c)			7,570		7,694,810
Series 2015-CR22, Class C, 4.26%, 3/10/48 (b)			5,000		5,007,912
Series 2015-LC19, Class C, 4.26%, 2/10/48 (b)			3,500		3,573,151



BLACKROCK CORE BOND TRUST	MAY 31, 2017	21


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Non-Agency Mortgage-Backed Securities		Par (000)		Value
Commercial Mortgage-Backed Securities (continued)
Core Industrial Trust, Series 2015-TEXW, Class D, 3.85%, 2/10/34 (b)(c)	USD		4,585	$	4,717,580
CSAIL Commercial Mortgage Trust, Series 2015-C1 (b):
Class B, 4.04%, 4/15/50			1,110		1,158,722
Class C, 4.30%, 4/15/50			1,000		1,027,063
DBJPM Mortgage Trust, Series 2016-C3, Class A5, 2.89%, 9/10/49			2,485		2,462,048
GAHR Commercial Mortgage Trust, Series 2015-NRF, Class DFX, 3.38%, 12/15/34 (b)(c)			6,170		6,272,411
GS Mortgage Securities Corp. II, Series 2013-GC10, Class B, 3.68%, 2/10/46 (c)			2,505		2,582,333
JPMorgan Chase Commercial Mortgage Securities Trust:
Series 2004-LN2, Class A2, 5.12%, 7/15/41			13		13,239
Series 2016-NINE, Class A, 2.85%, 10/06/38 (b)(c)			4,800		4,740,662
LB-UBS Commercial Mortgage Trust, Series 2007-C7, Class A3, 5.87%, 9/15/45 (b)			1,562		1,575,478
Morgan Stanley Capital I Trust, Series 2014-CPT, Class G, 3.45%, 7/13/29 (b)(c)			3,200		3,149,233
Wells Fargo Commercial Mortgage Trust, Series 2015-C28, Class A4, 3.54%, 5/15/48			3,205		3,333,818
WF-RBS Commercial Mortgage Trust, Series 2012-C8:
Class B, 4.31%, 8/15/45			1,395		1,484,877
Class C, 4.90%, 8/15/45 (b)			1,795		1,879,725

					83,361,665
Interest Only Commercial Mortgage-Backed Securities — 0.1%
Commercial Mortgage Loan Trust, Series 2015-LC21, Class XA, 0.86%, 7/10/48 (b)			19,341		855,433
Total Non-Agency Mortgage-Backed Securities — 11.2%					88,837,893



Preferred Securities
Capital Trusts
Banks — 3.0%
Allied Irish Banks PLC, 7.38% (b)(i)			200		242,342
Banco Santander SA, 6.25% (b)(i)			100		112,475
BNP Paribas SA, 7.20% (b)(c)(i)			2,000		2,272,500
Capital One Financial Corp., Series E, 5.55% (b)(i)			3,500		3,626,875


Capital Trusts		Par (000)		Value
Banks (continued)
CIT Group, Inc., 5.80% (b)(i)	USD		323	$	329,056
Citigroup, Inc. (b)(i):
5.95%, 0/ /0			2,200		2,318,313
6.13%			605		648,106
6.30%			4,000		4,215,000
Credit Agricole SA (b)(c)(i):
6.63%			1,400		1,442,560
7.88%			1,000		1,099,424
Intesa Sanpaolo SpA, 7.00% (b)(i)			200		233,657
Nordea Bank AB, 6.13% (b)(c)(i)			2,960		3,093,200
U.S. Bancorp, Series J, 5.30% (b)(i)			311		325,959
Wells Fargo & Co. (b)(i):
Series S, 5.90%			3,510		3,724,988
Series U, 5.88%			430		471,925

					24,156,380
Capital Markets — 0.7%
Goldman Sachs Group, Inc., Series L, 5.70% (b)(i)			612		631,890
Morgan Stanley, Series H, 5.45% (b)(i)			2,627		2,695,959
State Street Corp. (b):
2.13%, 6/01/77			140		130,200
Series F, 5.25% (i)			2,000		2,100,000

					5,558,049
Chemicals — 0.0%
Lanxess AG, 4.50%, 12/06/76 (b)			50		60,882
Solvay Finance SA, 5.12% (b)(i)			100		124,417

					185,299
Diversified Financial Services — 5.1%
Bank of America Corp. (b)(i):
Series V, 5.13%			385		389,812
Series X, 6.25%			4,620		4,961,880
Bank of New York Mellon Corp. (b)(i):
Series D, 4.50% (e)			8,400		8,379,000
Series E, 4.95%			2,000		2,075,000
Barclays PLC, 7.25% (b)(i)			200		275,357
HSBC Holdings PLC, 6.00% (b)(i)			235		239,847
JPMorgan Chase & Co. (b)(i):
Series 1, 7.90%			7,000		7,264,600
Series Q, 5.15%			3,000		3,049,800
Series U, 6.13%			500		538,750
Series V, 5.00%			6,710		6,827,425
Macquarie Bank Ltd., 10.25%, 6/20/57 (b)			1,800		1,805,476
Royal Bank of Scotland Group PLC, 8.63% (b)(i)			200		219,000
Societe Generale SA (b)(c)(i):
6.00%			3,000		2,981,250
7.88%			1,000		1,097,500

					40,104,697



22	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Capital Trusts		Par (000)		Value
Diversified Telecommunication Services — 0.0%
Telefonica Europe BV, 4.20% (b)(i)	USD		200	$	237,357
Electric Utilities — 0.6%
ComEd Financing III, 6.35%, 3/15/33			300		320,699
Electricite de France SA, 5.25% (b)(c)(i)			4,200		4,231,500
Enel SpA (b):
5.00%, 1/15/75			100		121,603
7.75%, 9/10/75			100		145,923
Gas Natural Fenosa Finance BV, 4.13% (b)(i)			100		118,761

					4,938,486
Industrial Conglomerates — 0.3%
General Electric Co., Series D, 5.00% (b)(i)			2,131		2,248,844
Insurance — 1.8%
Allstate Corp. (b):
5.75%, 8/15/53			2,000		2,176,250
6.50%, 5/15/67			4,100		4,702,187
MetLife, Inc., 6.40%, 12/15/66			2,554		2,913,808
Voya Financial, Inc., 5.65%, 5/15/53 (b)			4,500		4,725,000

					14,517,245
Total Capital Trusts — 11.5%					91,946,357


Preferred Stocks		Shares
Banks — 0.4%
Wells Fargo & Co. (i):
5.85% (b)			75,000		2,047,500
Series Y, 5.63%			50,000		1,266,000

					3,313,500
Capital Markets — 0.7%
Goldman Sachs Group, Inc., Series J, 5.50% (b)(i)			92,000		2,543,800
Morgan Stanley, Series K, 5.85% (b)(i)			82,887		2,209,768
SCE Trust III, Series H, 5.75% (b)(i)			25,314		729,296

					5,482,864
Thrifts & Mortgage Finance — 0.0%
Fannie Mae, Series S, 8.25% (b)(i)			10,000		64,000
Total Preferred Stocks — 1.1%					8,860,364


Trust Preferred		Shares			Value
Diversified Financial Services — 0.1%
Citigroup Capital XIII, 7.88%, 10/30/40			29,583		$	767,643
Total Preferred Securities — 12.7%						101,574,364



U.S. Government Sponsored Agency Securities		Par (000)
Agency Obligations — 1.5%
Fannie Mae, 5.63%, 7/15/37 (e)	USD		1,600			2,195,528
Federal Home Loan Bank (e):
5.25%, 12/09/22			1,375			1,610,793
5.37%, 9/09/24			2,175			2,629,782
Residual Funding Corp.,, 0.00%, 4/15/30 (j)			6,055			4,159,537
Resolution Funding Corp., 0.00%, 7/15/18 - 10/15/18 (j)			1,050			1,033,152

						11,628,792
Collateralized Mortgage Obligations — 4.1%
Fannie Mae Mortgage-Backed Securities:
Series 2015-47, Class GL, 3.50%, 7/25/45			1,636			1,696,841
Series 2005-5, Class PK, 5.00%, 12/25/34			139			143,439
Series 1991-87, Class S, 23.97%, 8/25/21 (b)			4			4,330
Series G-49, Class S, 928.35%, 12/25/21 (b)			—	(k)		17
Series G-07, Class S, 1,029.12%, 3/25/21 (b)			—	(k)		159
Freddie Mac Mortgage-Backed Securities:
Series 4350, Class DY, 4.00%, 6/15/44			2,830			3,089,955
Series 4480, Class ZX, 4.00%, 11/15/44			5,937			6,320,066
Series 4549, Class TZ, 4.00%, 11/15/45			2,601			2,811,209
Series 4398, Class ZX, 4.00%, 9/15/54			8,537			9,310,754
Series 0173, Class RS, 10.51%, 11/15/21 (a)(b)			—	(k)		2
Ginnie Mae Mortgage-Backed Securities, Series 2014-72, Class MQ, 4.00%, 2/20/44			8,858			9,505,845

						32,882,617
Commercial Mortgage-Backed Securities — 0.2%
Freddie Mac, Series K013, Class A2, 3.97%, 1/25/21 (b)			1,870			2,002,267



BLACKROCK CORE BOND TRUST	MAY 31, 2017	23


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


U.S. Government Sponsored Agency Securities	Par (000)				Value
Interest Only Collateralized Mortgage Obligations — 0.8%
Fannie Mae Mortgage-Backed Securities:
Series 1997-50, Class SI, 1.20%, 4/25/23 (b)		USD	40		$	1,085
Series 2012-M9, Class X1, 3.98%, 12/25/17 (b)			7,666			85,041
Series 2012-96, Class DI, 4.00%, 2/25/27			5,580			471,378
Series 2012-47, Class NI, 4.50%, 4/25/42			5,678			1,230,645
Series G92-05, Class H, 9.00%, 1/25/22			—	(k)		16
Series 094, Class 2, 9.50%, 8/25/21			—	(k)		27
Series 1990-136, Class S, 19.06%, 11/25/20 (b)			1			1
Freddie Mac Mortgage-Backed Securities:
Series K707, Class X1, 1.52%, 12/25/18 (b)			4,699			84,985
Series 2611, Class QI, 5.50%, 9/15/32			429			17,857
Series 1254, Class Z, 8.50%, 4/15/22			19			3,060
Series 1043, Class H, 40.55%, 2/15/21 (b)			1			2
Ginnie Mae Mortgage-Backed Securities (b):
Series 2009-78, Class SD, 5.19%, 9/20/32			5,674			954,777
Series 2009-116, Class KS, 5.48%, 12/16/39			2,116			318,267
Series 2011-52, Class NS, 5.68%, 4/16/41			15,995			2,940,037

						6,107,178
Mortgage-Backed Securities — 4.3%
Fannie Mae Mortgage-Backed Securities (e):
3.00%, 8/01/43			10,547			10,660,512
4.00%, 12/01/41 - 12/01/43			5,589			5,945,286
4.50%, 7/01/41 - 4/01/42			12,120			13,114,522
5.00%, 8/01/34			2,085			2,301,893
5.50%, 6/01/38			990			1,108,417
6.00%, 12/01/38			863			976,427
Freddie Mac Mortgage-Backed Securities, 6.00% 6/1/17 - 12/1/18			20			19,108
Ginnie Mae Mortgage-Backed Securities:
5.50%, 8/15/33			57			63,977
8.00%, 7/15/24			—	(k)		209

						34,190,351


U.S. Government Sponsored Agency Securities	Par (000)				Value
Principal Only Collateralized Mortgage Obligations — 0.0%
Fannie Mae Mortgage-Backed Securities (j):
Series 203, Class 1, 0.00%, 2/25/23		USD		2	$	2,136
Series 1993-51, Class E, 0.00%, 2/25/23				7		7,091
Series 1993-70, Class A, 0.00%, 5/25/23				1		1,119
Series 0228, Class 1, 0.00%, 6/25/23				2		1,840

						12,186
Total U.S. Government Sponsored Agency Securities — 10.9%						86,823,391


U.S. Treasury Obligations
U.S. Treasury Bonds (e):
3.00%, 11/15/44				61,400		63,177,223
2.50%, 2/15/46				55,000		50,988,850
Total U.S. Treasury Obligations — 14.3%						114,166,073
Total Long-Term Investments (Cost — $1,034,979,144) — 135.5%						1,078,859,591



Short-Term Securities — 2.6%			Shares
BlackRock Liquidity Funds, T-Fund, Institutional Class, 0.67% (l)(m)				20,430,978		20,430,978
Total Short-Term Securities (Cost — $20,430,978) — 2.6%						20,430,978
Options Purchased (Cost — $5,453,582) — 0.5%						3,685,714
Total Investments Before Options Written (Cost — $1,060,863,704*) — 138.6%						1,102,976,283
Options Written (Premiums Received — $4,605,908) — (0.4)%						(3,437,254	)
Total Investments, Net of Options Written (Cost — $1,056,257,796) — 138.2%						1,099,539,029
Liabilities in Excess of Other Assets — (38.2)%						(303,953,103	)

Net Assets — 100.0%					$	795,585,926



24	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

As of May 31, 2017, gross unrealized appreciation and depreciation based on cost for U.S. federal income

tax purposes were as follows:


Tax cost	$	1,060,694,300

Gross unrealized appreciation	$	58,785,514
Gross unrealized depreciation		(16,503,531	)

Net unrealized appreciation	$	42,281,983

Notes to Schedule of Investments

(a)

Security is valued using significant unobservable inputs and is classified as Level 3 in the fair value hierarchy.

(b)

Variable rate security. Rate as of period end.

(c)

Security exempt from registration pursuant to Rule 144A under the Securities Act of 1933, as amended. These securities may be resold in transactions exempt from registration to qualified institutional investors.

(d)

When-issued security.

(e)

All or a portion of the security has been pledged as collateral in connection with outstanding reverse repurchase agreements.

(f)

Payment-in-kind security which may pay interest/dividends in additional par/shares and/or in cash. Rates shown are the current rate and possible payment rates.

(g)

Convertible security.

(h)

Step-up bond that pays an initial coupon rate for the first period and then a higher coupon rate for the following periods. Rate as of period end.

(i)

Perpetual security with no stated maturity date.

(j)

Zero-coupon bond.

(k)

Amount is less than $500.

(l)

During the period ended May 31, 2017, investments in issuers considered to be affiliates of the Trust for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:


Affiliate	Shares Held at August 31, 2016		Net Activity			Shares Held at May 31, 2017		Value at May 31, 2017		Income		Net Realized Gain¹		Change in Unrealized Appreciation (Depreciation)
BlackRock Liquidity Funds, T-Fund, Institutional Class		—		20,430,978			20,430,978	$	20,430,978	$	65,182	$	77		—
BlackRock Liquidity Funds, TempFund, Institutional Class		12,926,909		(12,926,909	)		—		—		49		—		—
Total								$	20,430,978	$	65,231	$	77		—

Includes net capital gain distributions.

(m)

Current yield as of period end.


Portfolio Abbreviations


AUD		Australian Dollar
CAD		Canadian Dollar
CHF		Swiss Franc
CLO		Collateralized Loan Obligation
CR		Custodian Receipt
EUR		Euro
EURIBOR		Euro Interbank Offered Rate
GBP		British Pound
GO		General Obligation Bonds



BLACKROCK CORE BOND TRUST	MAY 31, 2017	25


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


Portfolio Abbreviations (concluded)


JPY		Japanese Yen
LIBOR		London Interebank Offered Rate
LOC		Letter of Credit
NOK		Norwegian Krone
NZD		New Zealand Dollar
OTC		Over-the-Counter
PIK		Payment-In-Kind
RB		Revenue Bonds
SEK		Swedish Krona
USD		U.S. Dollar

For Trust compliance purposes, the Trust’s sector classifications refer to one or more of the sector sub-classifications used by one or more widely recognized market indexes or rating group indexes, and/or as defined by the investment adviser. These definitions may not apply for purposes of this report, which may combine such sector sub-classifications for reporting ease.

Reverse Repurchase Agreements

Counterparty

Interest
Rate

Trade
Date

Maturity
Date¹

Face Value

Face Value
Including
Accrued
Interest

Type of Non-Cash
Underlying
Collateral

Remaining
Contractual
Maturity of
the Agreements

Nomura Securities International, Inc.

0.97%

6/28/16

Open

31,762,500

31,935,703

U.S. Treasury Obligations

Open/Demand

Credit Suisse Securities (USA) LLC

1.30%

10/14/16

Open

2,442,000

2,457,798

Corporate Bonds

Open/Demand

Credit Suisse Securities (USA) LLC

1.30%

10/14/16

Open

606,450

610,266

Corporate Bonds

Open/Demand

Credit Suisse Securities (USA) LLC

1.30%

10/14/16

Open

2,659,187

2,675,918

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.34%

10/18/16

Open

4,735,250

4,763,049

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.34%

10/18/16

Open

4,749,375

4,777,256

Corporate Bonds

Open/Demand

HSBC Securities (USA), Inc.

1.25%

10/20/16

Open

3,705,000

3,726,371

Corporate Bonds

Open/Demand

HSBC Securities (USA), Inc.

1.25%

10/20/16

Open

4,318,000

4,342,906

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

0.64%

10/20/16

Open

2,610,000

2,620,347

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

0.64%

10/20/16

Open

3,380,000

3,393,400

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

0.64%

10/20/16

Open

3,529,500

3,543,493

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

0.64%

10/20/16

Open

2,386,250

2,395,710

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

0.64%

10/20/16

Open

3,635,250

3,649,662

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

0.64%

10/20/16

Open

3,346,875

3,360,144

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

0.64%

10/20/16

Open

7,141,925

7,170,239

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

0.64%

10/20/16

Open

3,073,000

3,085,183

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

0.64%

10/20/16

Open

3,770,000

3,784,946

Corporate Bonds

Open/Demand



26	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

Reverse Repurchase Agreements (continued)

Counterparty

Interest
Rate

Trade
Date

Maturity
Date¹

Face Value

Face Value
Including
Accrued
Interest

Type of Non-Cash
Underlying
Collateral

Remaining
Contractual
Maturity of
the Agreements

HSBC Securities (USA), Inc.

1.25%

10/21/16

Open

4,921,000

4,949,098

Corporate Bonds

Open/Demand

HSBC Securities (USA), Inc.

1.25%

10/21/16

Open

7,991,000

8,036,626

Capital Trusts

Open/Demand

HSBC Securities (USA), Inc.

1.25%

10/26/16

Open

4,193,000

4,216,696

Corporate Bonds

Open/Demand

HSBC Securities (USA), Inc.

1.00%

12/15/16

Open

4,132,000

4,151,168

Corporate Bonds

Open/Demand

Merrill Lynch, Pierce, Fenner & Smith, Inc.

1.00%

12/15/16

Open

792,281

794,714

U.S. Government
Sponsored
Agency
Securities

Open/Demand

Merrill Lynch, Pierce, Fenner & Smith, Inc.

1.00%

12/15/16

Open

1,290,000

1,293,958

U.S. Government
Sponsored
Agency
Securities

Open/Demand

BNP Paribas Securities Corp.

0.61%

12/19/16

Open

1,011,169

1,013,962

U.S. Government
Sponsored
Agency
Securities

Open/Demand

BNP Paribas Securities Corp.

0.61%

12/19/16

Open

809,375

811,610

U.S. Government
Sponsored
Agency
Securities

Open/Demand

BNP Paribas Securities Corp.

0.61%

12/19/16

Open

1,318,625

1,322,267

U.S. Government
Sponsored
Agency
Securities

Open/Demand

BNP Paribas Securities Corp.

0.61%

12/19/16

Open

614,831

616,529

U.S. Government
Sponsored
Agency
Securities

Open/Demand

Credit Suisse Securities (USA) LLC

0.95%

12/19/16

Open

1,452,750

1,458,960

Corporate Bonds

Open/Demand

Credit Suisse Securities (USA) LLC

0.95%

12/19/16

Open

1,117,312

1,122,089

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

4,675,000

4,697,014

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

1,822,500

1,831,082

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

2,130,975

2,141,010

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

2,009,000

2,018,460

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

1,997,887

2,007,295

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

1,850,000

1,858,711

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

1,698,750

1,706,749

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

1,473,062

1,479,999

Corporate Bonds

Open/Demand



BLACKROCK CORE BOND TRUST	MAY 31, 2017	27


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

Reverse Repurchase Agreements (continued)

Counterparty

Interest
Rate

Trade
Date

Maturity
Date¹

Face Value

Face Value
Including
Accrued
Interest

Type of Non-Cash
Underlying
Collateral

Remaining
Contractual
Maturity of
the Agreements

RBC Capital Markets, LLC

1.04%

12/19/16

Open

2,043,877

2,053,502

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

1,900,700

1,909,650

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

3,137,500

3,152,274

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

1,463,000

1,469,889

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

2,200,000

2,210,360

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.04%

12/19/16

Open

1,704,938

1,712,966

Corporate Bonds

Open/Demand

BNP Paribas Securities Corp.

0.97%

12/29/16

Open

60,555,750

60,733,851

U.S. Treasury Obligations

Open/Demand

Deutsche Bank AG

0.95%

2/27/17

Open

22,562,500

22,606,679

U.S. Treasury Obligations

Open/Demand

Deutsche Bank AG

1.70%

3/16/17

Open

1,686,000

1,692,051

Corporate Bonds

Open/Demand

Deutsche Bank AG

1.70%

3/16/17

Open

1,862,000

1,868,683

Corporate Bonds

Open/Demand

Deutsche Bank AG

1.70%

3/16/17

Open

4,157,000

4,171,919

Corporate Bonds

Open/Demand

Deutsche Bank AG

1.70%

3/16/17

Open

2,265,000

2,273,129

Corporate Bonds

Open/Demand

Barclays Capital, Inc.

1.45%

3/20/17

Open

735,938

738,072

Corporate Bonds

Open/Demand

Barclays Capital, Inc.

1.45%

3/20/17

Open

971,163

973,979

Corporate Bonds

Open/Demand

Barclays Capital, Inc.

1.50%

3/20/17

Open

747,563

749,805

Corporate Bonds

Open/Demand

Barclays Capital, Inc.

1.50%

3/20/17

Open

979,688

982,627

Corporate Bonds

Open/Demand

Barclays Capital, Inc.

1.50%

3/20/17

Open

3,007,500

3,016,523

Corporate Bonds

Open/Demand

Barclays Capital, Inc.

1.50%

3/20/17

Open

1,052,125

1,055,281

Corporate Bonds

Open/Demand

Barclays Capital, Inc.

1.50%

3/20/17

Open

4,887,500

4,902,163

Corporate Bonds

Open/Demand

Barclays Capital, Inc.

1.50%

3/20/17

Open

1,009,375

1,012,403

Corporate Bonds

Open/Demand

Barclays Capital, Inc.

1.50%

3/20/17

Open

553,125

554,784

Corporate Bonds

Open/Demand

BNP Paribas Securities Corp.

1.36%

3/22/17

Open

778,000

780,057

Corporate Bonds

Open/Demand

Barclays Capital, Inc.

(0.50)%

4/06/17

Open

311,025

310,787

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.34%

4/06/17

Open

7,780,528

7,796,456

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.34%

4/06/17

Open

7,038,550

7,052,959

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.34%

4/06/17

Open

7,670,085

7,685,787

Corporate Bonds

Open/Demand

RBC Capital Markets, LLC

1.34%

4/06/17

Open

2,655,250

2,660,686

Corporate Bonds

Open/Demand

HSBC Securities (USA), Inc.

0.97%

5/10/17

6/13/17

9,439,000

9,444,341

U.S. Government
Sponsored Agency
Securities

Open/Demand



28	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

Reverse Repurchase Agreements (concluded)

Counterparty

Interest
Rate

Trade
Date

Maturity
Date¹

Face Value

Face Value
Including
Accrued
Interest

Type of Non-Cash
Underlying
Collateral

Remaining
Contractual
Maturity of
the Agreements

HSBC Securities (USA), Inc.

0.97%

5/10/17

6/13/17

938,000

938,531

U.S. Government Sponsored
Agency Securities

Open/Demand

HSBC Securities (USA), Inc.

0.97%

5/10/17

6/13/17

2,225,000

2,226,259

U.S. Government Sponsored
Agency Securities

Open/Demand

HSBC Securities (USA), Inc.

0.97%

5/10/17

6/13/17

2,520,000

2,521,426

U.S. Government Sponsored
Agency Securities

Open/Demand

HSBC Securities (USA), Inc.

0.97%

5/10/17

6/13/17

3,210,000

3,211,816

U.S. Government Sponsored
Agency Securities

Open/Demand

HSBC Securities (USA), Inc.

0.97%

5/10/17

6/13/17

1,071,000

1,071,606

U.S. Government Sponsored
Agency Securities

Open/Demand

HSBC Securities (USA), Inc.

0.97%

5/10/17

6/13/17

3,240,000

3,241,833

U.S. Government Sponsored
Agency Securities

Open/Demand

HSBC Securities (USA), Inc.

0.97%

5/10/17

6/13/17

10,229,000

10,234,788

U.S. Government Sponsored
Agency Securities

Open/Demand

Barclays Capital, Inc.

(3.50)%

5/23/17

Open

105,525

105,484

Corporate Bonds

Open/Demand

Total

313,844,284

314,943,794

Certain agreements have no stated maturity and can be terminated by either party at any time.

Derivative Financial Instruments Outstanding as of Period End


Futures Contracts
Contracts Long (Short)			Issue	Expiration	Notional Value		Unrealized Appreciation (Depreciation)
	30		90-Day Euro-Dollar	June 2017	$	7,406,438		$	2,014
	(1	)	Euro Bund Future	June 2017	$	182,342			471
	(395	)	2-Year U.S. Treasury Note	September 2017	$	85,511,329			(40,431	)
	363		5-Year U.S. Treasury Note	September 2017	$	42,947,438			81,539
	(437	)	10-Year U.S. Treasury Note	September 2017	$	55,191,734			(260,412	)
	97		10-Year U.S. Ultra Long Treasury Note	September 2017	$	13,166,234			112,859
	135		90-Day Euro Future	September 2017	$	33,302,813			25,095
	(133	)	Long U.S. Treasury Bond	September 2017	$	20,457,063			(184,880	)
	18		Ultra Long U.S. Treasury Bond	September 2017	$	2,972,250			42,679
	(50	)	90-Day Euro Dollar	December 2017	$	12,325,625			(16,955	)
	(135	)	90-Day Euro Dollar	June 2018	$	33,226,875			(37,826	)
	265		90-Day Euro Future	December 2018	$	65,107,187			181,387
	(265	)	90-Day Euro Future	December 2019	$	64,948,188			(224,790	)
	Total							$	(319,250	)



BLACKROCK CORE BOND TRUST	MAY 31, 2017	29


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

Forward Foreign Currency Exchange Contracts


Currency Purchased		Currency Sold		Counterparty	Settlement Date		Unrealized Appreciation (Depreciation)
USD	1,143,625	GBP	883,000	JPMorgan Chase Bank N.A.		6/06/17	$	5,807
USD	11,937,471	GBP	9,217,000	JPMorgan Chase Bank N.A.		6/06/17		60,611
CHF	10,273,992	EUR	9,365,000	Citibank N.A.		6/15/17		89,332
EUR	3,610,000	CHF	3,861,100	BNP Paribas S.A.		6/15/17		68,170
EUR	3,660,000	GBP	3,112,394	Bank of America N.A.		6/15/17		102,459
EUR	3,600,000	USD	3,932,365	Citibank N.A.		6/15/17		114,355
GBP	3,105,000	CAD	5,251,088	Goldman Sachs International		6/15/17		114,046
GBP	35,000	CAD	59,266	Royal Bank of Canada		6/15/17		1,230
GBP	1,553,216	EUR	1,780,000	Citibank N.A.		6/15/17		1,133
GBP	3,100,000	USD	3,791,494	BNP Paribas S.A.		6/15/17		204,237
GBP	1,550,000	USD	1,965,574	Barclays Bank PLC		6/15/17		32,292
GBP	10,000	USD	12,693	Northern Trust Co.		6/15/17		196
JPY	219,438,201	USD	1,970,000	BNP Paribas S.A.		6/15/17		12,424
NOK	49,668,320	AUD	7,670,000	Morgan Stanley & Co. International PLC		6/15/17		181,634
NOK	33,558,336	USD	3,920,000	BNP Paribas S.A.		6/15/17		52,507
NZD	5,481,623	AUD	5,000,000	BNP Paribas S.A.		6/15/17		168,205
NZD	2,832,398	AUD	2,640,000	Bank of America N.A.		6/15/17		44,969
NZD	5,510,000	CAD	5,145,053	BNP Paribas S.A.		6/15/17		93,102
NZD	2,823,761	EUR	1,770,000	Citibank N.A.		6/15/17		10,424
NZD	2,850,000	USD	1,968,513	BNP Paribas S.A.		6/15/17		50,134
SEK	34,608,776	GBP	3,040,000	BNP Paribas S.A.		6/15/17		66,409
USD	3,930,000	JPY	431,424,592	BNP Paribas S.A.		6/15/17		32,472
USD	1,960,000	NOK	16,446,178	Citibank N.A.		6/15/17		13,165
CAD	3,656,273	AUD	3,645,000	Barclays Bank PLC		6/27/17		550
NOK	135,065,000	SEK	138,466,612	Bank of America N.A.		7/03/17		32,944
NOK	16,855,000	SEK	17,184,549	Barclays Bank PLC		7/03/17		15,055
NOK	16,855,000	SEK	17,196,213	Barclays Bank PLC		7/03/17		13,710
NOK	16,855,000	SEK	17,118,798	Credit Suisse International		7/03/17		22,634
SEK	17,324,530	NOK	16,855,000	Barclays Bank PLC		7/03/17		1,080
SEK	17,420,264	NOK	16,855,000	Goldman Sachs International		7/03/17		12,115
CAD	1,312,298	AUD	1,308,581	Barclays Bank PLC		7/27/17		892
CAD	2,636,864	AUD	2,605,000	Barclays Bank PLC		7/27/17		19,906
CAD	2,638,349	AUD	2,605,000	Barclays Bank PLC		7/27/17		21,006
CAD	2,681,241	AUD	2,605,000	Barclays Bank PLC		7/27/17		52,789
CAD	2,130,026	NZD	2,225,000	Barclays Bank PLC		8/14/17		4,744
NZD	2,225,000	CAD	2,122,443	Barclays Bank PLC		8/14/17		877
NZD	2,830,000	CAD	2,674,163	Barclays Bank PLC		8/14/17		19,938
NZD	2,830,000	CAD	2,646,475	Deutsche Bank AG		8/14/17		40,462
NZD	2,830,000	CAD	2,662,289	Deutsche Bank AG		8/14/17		28,740
NZD	2,830,000	CAD	2,643,787	Goldman Sachs International		8/14/17		42,454
NZD	2,830,000	CAD	2,640,461	Morgan Stanley & Co. International PLC		8/14/17		44,920
NZD	2,830,000	CAD	2,646,192	Morgan Stanley & Co. International PLC		8/14/17		40,672
NZD	3,430,000	CAD	3,203,689	Morgan Stanley & Co. International PLC		8/14/17		51,914
GBP	1,544,667	EUR	1,765,000	Barclays Bank PLC		9/26/17		2,412
								1,989,127



30	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

Forward Foreign Currency Exchange Contracts (continued)


Currency Purchased		Currency Sold		Counterparty	Settlement Date		Unrealized Appreciation (Depreciation)
USD	9,885,582	EUR	9,043,000	Citibank N.A.		6/06/17	$	(274,727	)
USD	2,384,265	EUR	2,182,000	Deutsche Bank AG		6/06/17		(67,332	)
USD	107,048	EUR	98,000	Morgan Stanley & Co. International PLC		6/06/17		(3,060	)
AUD	7,670,000	NOK	49,408,169	Citibank N.A.		6/15/17		(150,838	)
AUD	2,350,000	NZD	2,517,139	Bank of America N.A.		6/15/17		(37,108	)
AUD	2,640,000	NZD	2,807,429	Citibank N.A.		6/15/17		(27,284	)
AUD	2,650,000	NZD	2,847,298	JPMorgan Chase Bank N.A.		6/15/17		(48,094	)
CAD	5,368,868	EUR	3,660,000	BNP Paribas S.A.		6/15/17		(138,828	)
CAD	5,197,550	GBP	3,140,000	Citibank N.A.		6/15/17		(198,802	)
CAD	5,178,419	NZD	5,510,000	Citibank N.A.		6/15/17		(68,396	)
CHF	3,961,163	EUR	3,670,000	Citibank N.A.		6/15/17		(32,218	)
CHF	3,874,555	EUR	3,610,000	Northern Trust Co.		6/15/17		(54,267	)
EUR	9,365,000	CHF	10,266,749	Barclays Bank PLC		6/15/17		(81,847	)
GBP	1,613,868	EUR	1,880,000	Citibank N.A.		6/15/17		(33,100	)
GBP	3,040,000	SEK	34,241,150	BNP Paribas S.A.		6/15/17		(24,082	)
JPY	216,752,676	USD	1,960,000	Bank of America N.A.		6/15/17		(1,837	)
NZD	2,782,510	GBP	1,530,000	Citibank N.A.		6/15/17		(1,242	)
USD	1,980,000	CHF	1,923,932	Citibank N.A.		6/15/17		(8,057	)
USD	3,937,158	EUR	3,600,000	Citibank N.A.		6/15/17		(109,562	)
USD	3,919,202	GBP	3,050,000	BNP Paribas S.A.		6/15/17		(12,082	)
USD	1,948,357	GBP	1,560,000	Barclays Bank PLC		6/15/17		(62,398	)
USD	3,799,196	GBP	3,100,000	Royal Bank of Scotland PLC		6/15/17		(196,535	)
USD	1,960,000	NOK	16,629,370	Barclays Bank PLC		6/15/17		(8,521	)
USD	1,992,853	NZD	2,850,000	BNP Paribas S.A.		6/15/17		(25,795	)
AUD	3,645,000	CAD	3,721,345	Citibank N.A.		6/27/17		(48,743	)
NOK	16,855,000	SEK	17,338,486	Barclays Bank PLC		7/03/17		(2,689	)
NOK	16,855,000	SEK	17,441,621	Credit Suisse International		7/03/17		(14,577	)
SEK	17,274,386	NOK	16,855,000	Barclays Bank PLC		7/03/17		(4,700	)
SEK	41,500,729	NOK	40,450,000	Citibank N.A.		7/03/17		(6,178	)
SEK	163,748,316	NOK	159,565,000	Morgan Stanley & Co. International PLC		7/03/17		(19,939	)
USD	9,492,005	EUR	8,437,000	BNP Paribas S.A.		7/06/17		(3,022	)
USD	2,154,681	EUR	1,915,000	Deutsche Bank AG		7/06/17		(466	)
USD	11,817,054	GBP	9,187,000	Deutsche Bank AG		7/06/17		(32,857	)
USD	1,125,565	GBP	875,000	Standard Chartered Bank		7/06/17		(3,060	)
AUD	2,605,000	CAD	2,611,640	Barclays Bank PLC		7/27/17		(1,214	)
AUD	2,605,000	CAD	2,617,353	Barclays Bank PLC		7/27/17		(5,447	)
AUD	2,605,000	CAD	2,622,855	Barclays Bank PLC		7/27/17		(9,524	)
AUD	2,605,000	CAD	2,637,526	Barclays Bank PLC		7/27/17		(20,396	)
AUD	3,645,000	CAD	3,652,753	Barclays Bank PLC		7/27/17		(559	)
AUD	2,605,000	CAD	2,659,249	Credit Suisse International		7/27/17		(36,493	)
CAD	7,558,493	AUD	7,546,419	Morgan Stanley & Co. International PLC		7/27/17		(1,789	)
CAD	2,672,284	NZD	2,830,000	Barclays Bank PLC		8/14/17		(21,331	)
CAD	2,683,579	NZD	2,830,000	Barclays Bank PLC		8/14/17		(12,959	)
CAD	2,685,144	NZD	2,830,000	Barclays Bank PLC		8/14/17		(11,799	)
CAD	2,696,404	NZD	2,830,000	Barclays Bank PLC		8/14/17		(3,452	)
CAD	2,650,592	NZD	2,830,000	Deutsche Bank AG		8/14/17		(37,410	)
CAD	2,654,002	NZD	2,830,000	Deutsche Bank AG		8/14/17		(34,882	)
CAD	2,655,358	NZD	2,830,000	Deutsche Bank AG		8/14/17		(33,878	)
CAD	2,670,247	NZD	2,830,000	Deutsche Bank AG		8/14/17		(22,841	)



BLACKROCK CORE BOND TRUST	MAY 31, 2017	31


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

Forward Foreign Currency Exchange Contracts (concluded)


Currency Purchased		Currency Sold		Counterparty	Settlement Date		Unrealized Appreciation (Depreciation)
NOK	16,528,863	CAD	2,665,000	JPMorgan Chase Bank N.A.		8/28/17	$	(16,995	)

								(2,073,212	)
Net Unrealized Depreciation							$	(84,085	)

Exchange-Traded Options Purchased

Description

Put/
Call

Expiration
Date

Strike
Price

Contracts

Value

Eurodollar 1-Year Mid-Curve Options

Put

6/16/17

USD

98.13

200

1,250

OTC Interest Rate Swaptions Purchased

Description

Counterparty

Put/
Call

Exercise
Rate

Pay/Receive
Exercise Rate

Floating Rate
Index

Expiration
Date

Notional
Amount
(000)

Value

2-Year Interest Rate Swap

Citibank N.A.

Call

1.55%

Receive

3-Month LIBOR

1/25/18

USD

40,000

85,620

1-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Call

1.94%

Receive

3-Month LIBOR

3/05/18

USD

27,900

105,478

1-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Call

1.94%

Receive

3-Month LIBOR

3/05/18

USD

9,700

36,672

2-Year Interest Rate Swap

Deutsche Bank AG

Call

1.25%

Receive

3-Month LIBOR

10/17/18

USD

10,000

16,280

10-Year Interest Rate Swap

Barclays Bank PLC

Call

2.75%

Receive

3-Month LIBOR

3/13/19

USD

2,290

127,044

2-Year Interest Rate Swap

Deutsche Bank AG

Call

2.25%

Receive

3-Month LIBOR

3/27/19

USD

20,000

210,847

2-Year Interest Rate Swap

Barclays Bank PLC

Call

2.00%

Receive

3-Month LIBOR

4/25/19

USD

40,000

309,658

10-Year Interest Rate Swap¹

Deutsche Bank AG

Call

2.60%

Receive

3-Month LIBOR

1/25/27

USD

1,900

(12,413

)

10-Year Interest Rate Swap

Deutsche Bank AG

Call

2.40%

Receive

3-Month LIBOR

2/08/27

USD

1,875

104,728

5-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

2.94%

Pay

3-Month LIBOR

7/05/17

USD

12,000

1,383

10-Year Interest Rate Swap

Deutsche Bank AG

Put

2.40%

Pay

3-Month LIBOR

7/18/17

USD

2,130

3,448

10-Year Interest Rate Swap

Barclays Bank PLC

Put

2.50%

Pay

3-Month LIBOR

10/20/17

USD

5,800

31,239

30-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

3.10%

Pay

3-Month LIBOR

1/03/18

USD

3,000

19,067

30-Year Interest Rate Swap

Barclays Bank PLC

Put

3.25%

Pay

3-Month LIBOR

3/13/18

USD

1,830

12,748

30-Year Interest Rate Swap

Barclays Bank PLC

Put

3.55%

Pay

3-Month LIBOR

3/13/18

USD

2,290

6,916

30-Year Interest Rate Swap

Barclays Bank PLC

Put

3.85%

Pay

3-Month LIBOR

3/13/18

USD

2,750

3,635

1-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

0.15%

Pay

6-Month EURIBOR

3/04/19

EUR

34,880

61,172

30-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

4.00%

Pay

3-Month LIBOR

3/04/19

USD

1,600

11,732



32	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

OTC Interest Rate Swaptions Purchased (concluded)

Description

Counterparty

Put/
Call

Exercise
Rate

Pay/Receive
Index Rate

Floating Rate
Index

Expiration
Date

Notional
Amount
(000)

Value

15-Year Interest Rate Swap

Barclays Bank PLC

Put

1.10%

Pay

6-Month LIBOR

5/15/20

JPY

250,000

28,209

10-Year Interest Rate Swap

Bank of America N.A.

Put

3.50%

Pay

3-Month LIBOR

2/01/21

USD

4,000

84,787

10-Year Interest Rate Swap

Citibank N.A.

Put

3.50%

Pay

3-Month LIBOR

2/01/21

USD

4,380

92,841

5-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Put

3.25%

Pay

3-Month LIBOR

10/25/21

USD

6,890

108,736

5-Year Interest Rate Swap

Barclays Bank PLC

Put

3.15%

Pay

3-Month LIBOR

10/27/21

USD

16,560

282,763

5-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

3.25%

Pay

3-Month LIBOR

12/16/21

USD

6,050

99,057

5-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Put

3.25%

Pay

3-Month LIBOR

12/16/21

USD

6,200

101,513

5-Year Interest Rate Swap

Barclays Bank PLC

Put

3.35%

Pay

3-Month LIBOR

1/04/22

USD

19,050

292,522

10-Year Interest Rate Swap

Credit Suisse International

Put

1.25%

Pay

6-Month LIBOR

1/11/22

JPY

250,000

21,205

10-Year Interest Rate Swap

Credit Suisse International

Put

1.55%

Pay

6-Month LIBOR

2/22/22

JPY

250,000

16,853

10-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Put

1.60%

Pay

6-Month LIBOR

3/16/22

JPY

250,000

16,563

10-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Put

1.45%

Pay

6-Month LIBOR

4/04/22

JPY

250,000

19,159

15-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

3.25%

Pay

3-Month LIBOR

5/03/22

USD

4,050

188,425

15-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

3.25%

Pay

3-Month LIBOR

5/03/22

USD

3,950

183,773

10-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Put

3.00%

Pay

3-Month LIBOR

4/12/27

USD

2,590

143,738

20-Year Interest Rate Swap

Barclays Bank PLC

Put

4.00%

Pay

6-Month EURIBOR

8/09/33

EUR

2,410

90,406

Total

2,905,804

¹ Forward settling swaption.

OTC Options Purchased

Description

Put/
Call

Counterparty

Expiration
Date

Strike
Price

Notional
Amount
(000)

Value

EUR Currency

Call

Deutsche Bank AG

6/22/17

JPY

128.00

EUR

10,535

14,426

AUD Currency

Call

Morgan Stanley & Co.
International PLC

6/23/17

CAD

1.05

AUD

23,440

453

USD Currency

Call

Citibank N.A.

6/28/17

CHF

0.99

USD

15,840

16,664

AUD Currency

Call

HSBC Bank PLC

6/29/17

NZD

1.11

AUD

10,510

102

NOK Currency

Call

Deutsche Bank AG

6/29/17

SEK

1.05

NOK

132,990

13,709

NZD Currency

Call

Morgan Stanley & Co.
International PLC

8/10/17

CAD

0.95

NZD

22,545

252,200

CAD Currency

Call

JPMorgan Chase Bank N.A.

8/24/17

NOK

6.40

CAD

10,650

50,717

EUR Currency

Call

Barclays Bank PLC

9/22/17

GBP

0.90

EUR

14,325

119,773

EUR Currency

Put

Barclays Bank PLC

6/01/17

AUD

1.45

EUR

14,390

—



BLACKROCK CORE BOND TRUST	MAY 31, 2017	33


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

OTC Options Purchased (concluded)

Description

Put/
Call

Counterparty

Expiration
Date

Strike
Price

Notional
Amount
(000)

Value

EUR Currency

Put

Barclays Bank PLC

6/01/17

AUD

1.41

EUR

14,390

—

EUR Currency

Put

UBS AG

6/14/17

NZD

1.57

EUR

14,295

52,896

EUR Currency

Put

UBS AG

6/14/17

NZD

1.53

EUR

14,295

3,196

GBP Currency

Put

Citibank N.A.

6/15/17

NOK

10.30

GBP

9,355

964

AUD Currency

Put

Citibank N.A.

7/25/17

CAD

1.00

AUD

15,625

100,230

NZD Currency

Put

Morgan Stanley & Co.
International PLC

8/10/17

CAD

0.95

NZD

22,545

152,607

EUR Currency

Put

UBS AG

8/14/17

EUR

1.03

EUR

7,315

723

Total

778,660

OTC Interest Rate Swaptions Written

Description

Counterparty

Put/
Call

Exercise
Rate

Pay/Receive
Exercise Rate

Floating Rate
Index

Expiration
Date

Notional

Amount

(000)

Value

5-Year Interest Rate Swap

Goldman Sachs Bank USA

Call

0.15%

Pay

6-Month EURIBOR

12/04/17

EUR

5,700

(17,557

)

5-Year Interest Rate Swap

Morgan Stanley & Co.
International PLC

Call

1.70%

Pay

3-Month LIBOR

12/18/17

USD

7,600

(36,903

)

2-Year Interest Rate Swap

Citibank N.A.

Call

1.05%

Pay

3-Month LIBOR

1/25/18

USD

60,000

(18,362

)

2-Year Interest Rate Swap

Goldman Sachs Bank USA

Call

1.60%

Pay

3-Month LIBOR

3/01/18

USD

24,400

(64,489

)

5-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Call

2.41%

Pay

3-Month LIBOR

3/05/18

USD

5,580

(138,657

)

5-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Call

2.41%

Pay

3-Month LIBOR

3/05/18

USD

1,940

(48,207

)

5-Year Interest Rate Swap

Barclays Bank PLC

Call

0.10%

Pay

6-Month EURIBOR

3/13/18

EUR

11,520

(31,901

)

2-Year Interest Rate Swap

Citibank N.A.

Call

1.94%

Pay

3-Month LIBOR

4/05/18

USD

21,700

(136,532

)

2-Year Interest Rate Swap

Deutsche Bank AG

Call

0.90%

Pay

3-Month LIBOR

10/17/18

USD

20,000

(13,660

)

2-Year Interest Rate Swap

Citibank N.A.

Call

2.00%

Pay

3-Month LIBOR

3/11/19

USD

18,800

(143,189

)

10-Year Interest Rate Swap

Barclays Bank PLC

Call

2.00%

Pay

3-Month LIBOR

3/13/19

USD

4,580

(98,221

)

2-Year Interest Rate Swap

Goldman Sachs Bank USA

Call

1.60%

Pay

3-Month LIBOR

3/21/19

USD

15,400

(63,541

)

2-Year Interest Rate Swap

Deutsche Bank AG

Call

1.75%

Pay

3-Month LIBOR

3/27/19

USD

30,000

(159,088

)

2-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Call

1.75%

Pay

3-Month LIBOR

3/28/19

USD

8,470

(44,868

)

2-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Call

1.60%

Pay

3-Month LIBOR

4/12/19

USD

6,700

(28,298

)

2-Year Interest Rate Swap

Barclays Bank PLC

Call

1.50%

Pay

3-Month LIBOR

4/25/19

USD

80,000

(290,122

)

2-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Call

1.65%

Pay

3-Month LIBOR

5/06/19

USD

28,440

(133,680

)

5-Year Interest Rate Swap

Goldman Sachs Bank USA

Call

1.70%

Pay

3-Month LIBOR

1/05/22

USD

5,000

(79,152

)



34	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

OTC Interest Rate Swaptions Written (continued)

Description

Counterparty

Put/
Call

Exercise
Rate

Pay/Receive
Exercise Rate

Floating Rate
Index

Expiration
Date

Notional

Amount

(000)

Value

5-Year Interest Rate Swap

Deutsche Bank AG

Call

1.75%

Pay

3-Month LIBOR

2/08/22

USD

5,000

(83,609

)

5-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

3.19%

Receive

3-Month LIBOR

7/05/17

USD

12,000

(119

)

10-Year Interest Rate Swap

Deutsche Bank AG

Put

2.65%

Receive

3-Month LIBOR

7/18/17

USD

2,130

(426

)

10-Year Interest Rate Swap

Deutsche Bank AG

Put

2.40%

Receive

3-Month LIBOR

10/20/17

USD

2,900

(22,430

)

2-Year Interest Rate Swap

Wells Fargo Bank N.A.

Put

2.00%

Receive

3-Month LIBOR

11/21/17

USD

26,600

(16,682

)

2-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

2.10%

Receive

3-Month LIBOR

11/22/17

USD

12,090

(4,754

)

2-Year Interest Rate Swap

Citibank N.A.

Put

2.15%

Receive

3-Month LIBOR

11/29/17

USD

21,810

(7,478

)

2-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

2.10%

Receive

3-Month LIBOR

12/04/17

USD

10,790

(5,028

)

5-Year Interest Rate Swap

Barclays Bank PLC

Put

0.65%

Receive

6-Month EURIBOR

12/04/17

EUR

7,200

(10,474

)

5-Year Interest Rate Swap

Morgan Stanley & Co.
International PLC

Put

2.70%

Receive

3-Month LIBOR

12/18/17

USD

7,600

(6,682

)

10-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

3.00%

Receive

3-Month LIBOR

1/03/18

USD

7,430

(16,243

)

2-Year Interest Rate Swap

Citibank N.A.

Put

2.30%

Receive

3-Month LIBOR

1/25/18

USD

20,000

(8,134

)

30-Year Interest Rate Swap

Barclays Bank PLC

Put

2.95%

Receive

3-Month LIBOR

3/13/18

USD

1,830

(28,854

)

2-Year Interest Rate Swap

Citibank N.A.

Put

1.94%

Receive

3-Month LIBOR

4/05/18

USD

21,700

(52,446

)

2-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Put

2.15%

Receive

3-Month LIBOR

4/06/18

USD

8,320

(10,923

)

2-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

1.75%

Receive

3-Month LIBOR

4/12/18

USD

38,200

(154,022

)

2-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

1.45%

Receive

3-Month LIBOR

6/27/18

USD

10,000

(87,321

)

2-Year Interest Rate Swap

Citibank N.A.

Put

1.40%

Receive

3-Month LIBOR

7/05/18

USD

10,000

(95,933

)

2-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

1.50%

Receive

3-Month LIBOR

9/06/18

USD

26,000

(237,598

)

2-Year Interest Rate Swap

Barclays Bank PLC

Put

2.50%

Receive

3-Month LIBOR

10/17/18

USD

5,000

(8,594

)

5-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

0.64%

Receive

6-Month EURIBOR

3/04/19

EUR

6,980

(93,928

)

2-Year Interest Rate Swap

Citibank N.A.

Put

3.00%

Receive

3-Month LIBOR

3/11/19

USD

18,800

(24,871

)

2-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

2.60%

Receive

3-Month LIBOR

3/21/19

USD

15,400

(40,387

)

2-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Put

2.75%

Receive

3-Month LIBOR

3/28/19

USD

8,470

(17,955

)

2-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Put

2.35%

Receive

3-Month LIBOR

4/08/19

USD

7,530

(30,404

)

2-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Put

2.60%

Receive

3-Month LIBOR

4/12/19

USD

13,400

(37,635

)



BLACKROCK CORE BOND TRUST	MAY 31, 2017	35


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

OTC Interest Rate Swaptions Written (concluded)

Description

Counterparty

Put/
Call

Exercise
Rate

Pay/Receive
Exercise Rate

Floating Rate
Index

Expiration
Date

Notional

Amount

(000)

Value

2-Year Interest Rate Swap

JPMorgan Chase Bank N.A.

Put

2.65%

Receive

3-Month LIBOR

5/06/19

USD

28,440

(79,916

)

15-Year Interest Rate Swap

Barclays Bank PLC

Put

2.10%

Receive

6-Month LIBOR

5/15/20

JPY

250,000

(9,074

)

10-Year Interest Rate Swap

Bank of America N.A.

Put

5.50%

Receive

3-Month LIBOR

2/01/21

USD

10,000

(34,471

)

10-Year Interest Rate Swap

Citibank N.A.

Put

5.50%

Receive

3-Month LIBOR

2/01/21

USD

10,950

(37,745

)

5-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

3.25%

Receive

3-Month LIBOR

5/03/22

USD

10,130

(180,958

)

5-Year Interest Rate Swap

Goldman Sachs Bank USA

Put

3.25%

Receive

3-Month LIBOR

5/03/22

USD

9,870

(176,313

)

Total

(3,167,834

)

OTC Options Written

Description

Put/
Call

Counterparty

Expiration
Date

Strike
Price

Notional
Amount
(000)

Value

EUR Currency

Call

Deutsche Bank AG

6/22/17

JPY

130.00

EUR

10,535

(3,396

)

AUD Currency

Call

Citibank N.A.

6/23/17

CAD

1.05

AUD

23,440

(470

)

AUD Currency

Call

HSBC Bank PLC

6/29/17

NZD

1.11

AUD

10,510

(102

)

GBP Currency

Call

Credit Suisse
International

7/03/17

CAD

1.82

GBP

6,075

(6,575

)

EUR Currency

Put

Barclays Bank PLC

6/01/17

AUD

1.43

EUR

28,770

—

EUR Currency

Put

UBS AG

6/14/17

NZD

1.55

EUR

28,590

(29,933

)

GBP Currency

Put

Citibank N.A.

6/15/17

NOK

10.10

GBP

9,355

(72

)

NOK Currency

Put

Deutsche Bank AG

6/29/17

SEK

1.02

NOK

265,975

(93,020

)

AUD Currency

Put

Morgan Stanley &
Co. International PLC

7/25/17

CAD

1.00

AUD

15,625

(100,730

)

CAD Currency

Put

JPMorgan Chase
Bank N.A.

8/24/17

NOK

6.00

CAD

15,980

(35,122

)

Total

(269,420

)

Centrally Cleared Credit Default Swaps - Buy Protection


Issuer/Index	Pay Fixed Rate			Expiration Date		Notional Amount (000)			Unrealized Depreciation
Markit iTraxx XO, Series 27, Version 1		5.00	%		6/20/22		EUR	80	$	(2,421	)

Centrally Cleared Credit Default Swaps - Sell Protection

Issuer/Index

Receive
Fixed
Rate

Expiration
Date

Credit
Rating¹

Notional
Amount
(000)²

Unrealized
Appreciation

Chesapeake Energy Corp.

5.00%

12/20/21

CCC

USD

270

3,159

¹Using Standard & Poor’s (“S&P’s”) rating of the issuer or the underlying securities of the indes, as applicable.

²The maximum potential amount the Trust may pay should a negative credit event take place as defined under the terms of the agreement.



36	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

Centrally Cleared Interest Rate Swaps

Fixed Rate

Floating
Rate

Effective
Date

Expiration
Date

Notional
Amount
(000)

Unrealized
Appreciation
(Depreciation)

1.08%¹

3-Month LIBOR

6/14/17

7/26/17

USD

640,700

27,221

1.08%¹

3-Month LIBOR

6/14/17

7/26/17

USD

320,350

11,279

0.77%¹

3-Month LIBOR

N/A

2/05/18

USD

107,000

398,841

1.62%²

3-Month LIBOR

7/06/17

3/31/19

USD

30,160

58,858

1.67%²

3-Month LIBOR

7/06/17

3/31/19

USD

9,110

25,233

1.67%²

3-Month LIBOR

7/06/17

3/31/19

USD

9,100

25,827

1.68%²

3-Month LIBOR

7/06/17

3/31/19

USD

16,950

50,915

1.79%²

3-Month LIBOR

7/06/17

3/31/19

USD

26,920

132,257

1.65%¹

3-Month LIBOR

11/21/17

11/21/19

USD

19,500

(5,984

)

1.87%¹

3-Month LIBOR

1/19/18

1/19/20

USD

2,600

(9,778

)

2.17%¹

3-Month LIBOR

3/13/18

3/13/20

USD

5,000

(44,325

)

2.13%¹

3-Month LIBOR

3/17/18

3/17/20

USD

6,790

(53,583

)

1.75%¹

3-Month LIBOR

5/21/18

5/21/20

USD

10,950

3,610

1.68%¹

3-Month LIBOR

7/06/17

8/31/21

USD

26,160

(123,302

)

1.95%²

3-Month LIBOR

7/06/17

8/31/21

USD

7,690

55,387

0.41%²

6-Month EURIBOR

4/03/18

4/03/23

EUR

3,200

9,978

2.28%¹

3-Month LIBOR

6/30/17

2/15/24

USD

9,380

(185,951

)

1.97%²

3-Month LIBOR

10/27/21

10/27/26

USD

1,870

(38,135

)

2.07%²

3-Month LIBOR

10/29/21

10/29/26

USD

6,160

(98,561

)

2.23%¹

3-Month LIBOR

6/30/17

11/15/26

USD

3,145

(28,684

)

2.32%¹

3-Month LIBOR

6/30/17

11/15/26

USD

3,145

(54,127

)

2.35%¹

3-Month LIBOR

6/30/17

11/15/26

USD

3,320

(65,432

)

2.37%¹

3-Month LIBOR

6/30/17

11/15/26

USD

3,330

(72,549

)

2.95%²

3-Month LIBOR

12/21/21

12/21/26

USD

4,100

89,592

2.75%²

3-Month LIBOR

1/05/22

1/05/27

USD

6,930

90,647

2.29%¹

3-Month LIBOR

9/29/17

2/15/27

USD

4,048

(46,604

)

3.02%²

3-Month LIBOR

3/14/22

3/14/27

USD

5,220

126,191

2.74%²

3-Month LIBOR

4/06/22

4/06/27

USD

2,070

24,081

2.32%²

3-Month LIBOR

N/A

5/03/27

USD

1,380

22,937

2.90%¹

3-Month LIBOR

1/27/27

1/27/37

USD

730

(12,008

)

3.07%¹

3-Month LIBOR

3/22/27

³³

3/20/37

USD

1,000

(29,103

)

2.59%²

3-Month LIBOR

6/30/17

8/15/43

USD

860

29,698

2.71%¹

3-Month LIBOR

6/30/17

11/15/43

USD

1,400

(84,469

)

2.83%¹

3-Month LIBOR

6/30/17³

11/15/43

USD

2,560

(215,603

)

Total

14,354

¹ Fund pays the fixed rate and receives the floating rate.

² Fund pays the floating rate and receives the fixed rate.

³ Forward swap.

OTC Credit Default Swaps - Buy Protection


Issuer/Index	Pay Fixed Rate			Counterparty	Expiration Date		Notional Amount (000)			Value			Premiums Paid		Unrealized Depreciation
Australia & New Zealand Banking Group Ltd.		1.00	%	Deutsche Bank AG		9/20/17		USD	1	$	(1	)	$	1	$	(2	)
Westpac Banking Corp.		1.00	%	Deutsche Bank AG		9/20/17		USD	1		(2	)		1		(3	)
Total										$	(3	)	$	2	$	(5	)



BLACKROCK CORE BOND TRUST	MAY 31, 2017	37


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

OTC Credit Default Swaps - Sell Protection


Issuer/Index	Receive Fixed Rate			Counterparty	Expiration Date	Credit Rating¹		Notional Amount (000)²			Value			Premiums Paid (Received)			Unrealized Appreciation (Depreciation)
Hellenic Telecommunications Organization SA		5.00	%	Barclays Bank PLC	12/20/21		B+		EUR	20	$	3,220		$	1,229		$	1,991
GFKL Financial Services AG		5.00	%	Credit Suisse International	6/20/22		B-		EUR	8		(467	)		(492	)		25
International Game Technology		5.00	%	Credit Suisse International	6/20/22		BB+		EUR	10		1,265			1,041			224
International Game Technology		5.00	%	JPMorgan Chase Bank N.A.	6/20/22		BB+		EUR	10		1,277			1,079			198
Markit CMBX North America, Series 8		3.00	%	Barclays Bank PLC	10/17/57		NR		USD	5,000		(735,961	)		(523,457	)		(212,504	)
Markit CMBX North America, Series 8		3.00	%	Credit Suisse International	10/17/57		NR		USD	2,500		(367,981	)		(258,620	)		(109,361	)
Markit CMBX North America, Series 8		3.00	%	Morgan Stanley & Co. International PLC	10/17/57		NR		USD	5,550		(816,454	)		(765,337	)		(51,117	)
Markit CMBX North America, Series 9		3.00	%	Credit Suisse International	9/17/58		NR		USD	5,000		(535,510	)		(558,759	)		23,249
Markit CMBX North America, Series 9		3.00	%	Credit Suisse International	9/17/58		NR		USD	5,000		(535,511	)		(558,759	)		23,248
Markit CMBX North America, Series 9		3.00	%	Credit Suisse International	9/17/58		NR		USD	5,000		(535,511	)		(552,656	)		17,145
Markit CMBX North America, Series 9		3.00	%	Credit Suisse International	9/17/58		NR		USD	5,000		(535,511	)		(558,706	)		23,195
Markit CMBX North America, Series 9		3.00%		Morgan Stanley & Co. International PLC	9/17/58		NR		USD	9,450		(1,012,115	)		(1,203,985	)		191,870
Total											$	(5,069,259	)	$	(4,977,422	)	$	(91,837	)

Using S&P’s rating of the issuer or the underlying securities of the indes, as applicable.

The maximum potential amount the Trust may pay should a negative credit event take place as defined under the terms of the agreement.



38	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)

Fair Value Hierarchy as of Period End

Various inputs are used in determining the fair value of investments and derivative financial instruments. These inputs to valuation techniques are categorized into a fair value hierarchy consisting of three broad levels for financial reporting purposes as follows:

•

Level 1 — unadjusted price quotations in active markets/exchanges for identical assets or liabilities that the Trust has the ability to access

•

Level 2 — other observable inputs (including, but not limited to, quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market–corroborated inputs)

•

Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Trust’s own assumptions used in determining the fair value of investments and derivative financial instruments)

The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3. The inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the fair value hierarchy classification is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Investments classified within Level 3 have significant unobservable inputs used by the BlackRock Global Valuation Methodologies Committee (the “Global Valuation Committee”) in determining the price for Fair Valued Investments. Level 3 investments include equity or debt issued by privately held companies or funds. There may not be a secondary market, and/or there are a limited number of investors. Level 3 investments may also be adjusted to reflect illiquidity and/or non-transferability, with the amount of such discount estimated by the Global Valuation Committee in the absence of market information.

Changes in valuation techniques may result in transfers into or out of an assigned level within the hierarchy. In accordance with the Trust’s policy, transfers between different levels of the fair value hierarchy are deemed to have occurred as of the beginning of the reporting period. The categorization of a value determined for investments and derivative financial instruments is based on the pricing transparency of the investments and derivative financial instruments and is not necessarily an indication of the risks associated with investing in those securities. For information about the Trust’s policy regarding valuation of investments and derivative financial instruments, refer to the Trust’s most recent financial statements as contained in its semi-annual report.

The following tables summarize the Trust’s investments and derivative financial instruments categorized in the disclosure hierarchy:


	Level 1		Level 2		Level 3		Total
Assets:
Investments:
Long-Term Investments:
Asset-Backed Securities		—	$	72,344,145	$	16,519,017	$	88,863,162
Corporate Bonds	$	420,664		532,125,542		7,065,657		539,611,863
Floating Rate Loan Interests		—		13,002,110		231,298		13,233,408
Foreign Agency Obligations		—		21,501,921		—		21,501,921
Municipal Bonds		—		24,247,516		—		24,247,516
Non-Agency Mortgage-Backed Securities		—		88,837,893		—		88,837,893
Preferred Securities		9,628,007		91,946,357		—		101,574,364
U.S. Government Sponsored Agency Securities		—		86,823,389		2		86,823,391
U.S. Treasury Obligations		—		114,166,073		—		114,166,073
Short-Term Securities:
Money Market Funds		20,430,978		—		—		20,430,978



BLACKROCK CORE BOND TRUST	MAY 31, 2017	39


Schedule of Investments (continued)		BlackRock Core Bond Trust (BHK)


	Level 1			Level 2			Level 3		Total
Assets: (concluded)
Investments:
Options Purchased:
Interest rate contracts¹	$	1,250		$	2,905,804			—	$	2,907,054
Foreign currency exchange contracts		—			778,660			—		778,660

Total	$	30,480,899		$	1,048,679,410		$	23,815,974	$	1,102,976,283



Derivative Financial Instruments²
Assets:
Credit contracts		—		$	284,304			—	$	284,304
Foreign currency exhange contracts		—			1,989,127			—		1,989,127
Interest rate contracts	$	446,044			1,182,552			—		1,628,596
Liabilities:
Credit contracts		—			(375,408	)		—		(375,408	)
Foreign currency exhange contracts		—			(2,342,632	)		—		(2,342,632	)
Interest rate contracts		(765,294	)		(4,336,032	)		—		(5,101,326	)

Total	$	(319,250	)	$	(3,598,089	)		—	$	(3,917,339	)

Includes forward settling swaption.

Derivative financial instruments are swaps, futures contracts, forward foreign currency exchange contracts and options written. Swaps, futures contracts and forward foreign currency exchange contracts are valued at the unrealized appreciation (depreciation) on the instrument and options written are shown at value.

The Trust may hold assets and/or liabilities in which the fair value approximates the carrying amount or face value, including accrued interest, for financial reporting purposes. As of period end, reverse repurchase agreemtents of $314,943,794 are categorized as level 2 within the disclosure hierarchy.

During the period ended May 31, 2017, there were no transfers between Level 1 and Level 2.



40	BLACKROCK CORE BOND TRUST	MAY 31, 2017


Schedule of Investments (concluded)		BlackRock Core Bond Trust (BHK)

A reconciliation of Level 3 investments is presented when the Trust had a significant amount of Level 3 investments at the beginning and/or end of the period in relation to net assets. The following table is a reconciliation of Level 3 investments for which significant unobservable inputs were used in determining fair value:


	Asset-Backed Securities			Corporate Bonds			Floating Rate Loan Interests			Non-Agency Mortgage- Backed Securities			U.S. Government Sponsored Agency Securities		Total
Assets:
Opening balance, as of August 31, 2016	$	6,235,302		$	7,833,603		$	425,295			—		$	2	$	14,494,202
Transfers into Level 3		—			—			—			—			—		—
Transfers out of Level 3		(1,500,780	)		—			(176,542	)		—			—		(1,677,322	)
Accrued discounts/premiums		(133,013	)		—			3,043			—			—		(129,970	)
Net realized gain (loss)		(83,949	)		—			4,508		$	4			—		(79,437	)
Net change in unrealized appreciation (depreciation)¹		310,867			(515,732	)		6,433			—			—		(198,432	)
Purchases		14,745,590			—			39,600			—			—		14,785,190
Sales		(3,055,000	)		(252,214	)		(71,039	)		(4	)		—		(3,378,257	)

Closing Balance, as of May 31, 2017	$	16,519,017		$	7,065,657		$	231,298			—		$	2	$	23,815,974

Net change in unrealized appreciation (depreciation) on investments still held at May 31, 2017¹	$	372,981		$	(515,732	)	$	6,433			—			—	$	(136,318	)

Any difference between net change in unrealized appreciation (depreciation) and net change in unrealized appreciation (depreciation) on investments still held at May 31, 2017 is generally due to derivative financial investments no longer held or categorized as Level 3 at period end.

The Trust’s investments that are categorized as Level 3 were valued utilizing third party pricing information without adjustment. Such valuations are based on unobservable inputs. A significant change in third party information could result in a significantly lower or higher value of such Level 3 investments.



BLACKROCK CORE BOND TRUST	MAY 31, 2017	41

Item 2 – Controls and Procedures


2(a) –		The registrant’s principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing of this report based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 13a-15(b) under the Securities Exchange Act of 1934, as amended.

2(b) –		There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the registrant’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 3 – Exhibits

Certifications – Attached hereto

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


BlackRock Core Bond Trust

By:		/s/ John M. Perlowski
		John M. Perlowski
		Chief Executive Officer (principal executive officer) of
		BlackRock Core Bond Trust

Date: July 24, 2017

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.


By:		/s/ John M. Perlowski
		John M. Perlowski
		Chief Executive Officer (principal executive officer) of
		BlackRock Core Bond Trust

Date: July 24, 2017


By:		/s/ Neal J. Andrews
		Neal J. Andrews
		Chief Financial Officer (principal financial officer) of
		BlackRock Core Bond Trust

Date: July 24, 2017