UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: June 30, 2007 Check here if Amendment [ ]; Amendment Number: This Amendment (Check only one.): [ ] is a restatement. [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: The Bank of Nova Scotia Address: 40 King St. West Scotia Plaza 9th Floor Toronto, Ontario M5H 1H1 13F File Number: 28-11475 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Maria Theofilaktidis Title: Vice President, Financial Accounting and Controls Phone: 416-866-4269 Signature, Place, and Date of Signing: /s/ Maria Theofilaktidis Toronto, Ontario, Canada August 14, 2007 Report Type (Check only one.): [ ] 13F HOLDINGS REPORT. [ ] 13F NOTICE. [ X] 13F COMBINATION REPORT. List of Other Managers Reporting for this Manager: Form 13F File Number Name 28-11461 Scotia Capital Inc. 28-11460 Scotia Cassels Investment Counsel Ltd. 28-11459 Bank of Nova Scotia Trust Co. FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 1 Form13F Information Table Entry Total: 156 Form13F Information Table Value Total: $19,671,792 (thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional managers with respect to which this report is filed, other than the manager filing this report. No. 13F File Number Name 28-11472 BNS Investment Inc. FORM 13F INFORMATION TABLE VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- -------- 3M CO COM 88579Y101 1498 17245 SH DEFINED 1 17245 0 0 ABITIBI-CONSOLIDATED INC COM 003924107 18766 6430732 SH SOLE 6430732 0 0 AGNICO EAGLE MINES LTD COM 008474108 7589 208807 SH SOLE 208807 0 0 AGRIUM INC COM 008916108 9516 217136 SH SOLE 217136 0 0 ALCAN INC COM 013716105 194316 2382325 SH SOLE 2382325 0 0 ALCOA INC COM 013817101 724 17845 SH DEFINED 1 17845 0 0 ALTRIA GROUP INC COM 02209S103 1246 17745 SH DEFINED 1 17745 0 0 AMERICAN EXPRESS CO COM 025816109 1087 17745 SH DEFINED 1 17745 0 0 AMERICAN INTL GROUP INC COM 026874107 1242 17715 SH DEFINED 1 17715 0 0 AMGEN INC COM 031162100 5529 100000 SH SOLE 100000 0 0 ANADARKO PETE CORP COM 032511107 2600 50000 SH SOLE 50000 0 0 ANHEUSER BUSCH COS INC COM 035229103 3912 75000 SH SOLE 75000 0 0 APPLE INC COM 037833100 3051 25000 SH SOLE 25000 0 0 AT&T INC COM 00206R102 716 17245 SH DEFINED 1 17245 0 0 BALLARD PWR SYS INC COM 05858H104 336 63000 SH SOLE 63000 0 0 BANK MONTREAL QUE COM 063671101 1422618 22158739 SH SOLE 22158739 0 0 BANK OF AMERICA CORPORATION COM 060505104 17112 350000 SH SOLE 350000 0 0 BARRICK GOLD CORP COM 067901108 114394 3933988 SH SOLE 3933988 0 0 BAYTEX ENERGY TR TRUST UNIT 073176109 4349 217100 SH SOLE 217100 0 0 BCE INC COM NEW 05534B760 24252 640500 SH SOLE 1 640500 0 0 BCE INC COM NEW 05534B760 1304777 34459822 SH SOLE 34459822 0 0 BEST BUY INC COM 086516101 9334 200000 SH SOLE 200000 0 0 BIOVAIL CORP COM 09067J109 6121 240207 SH SOLE 240207 0 0 BOEING CO COM 097023105 1612 16745 SH DEFINED 1 16745 0 0 BRISTOL MYERS SQUIBB CO COM 110122108 2367 75000 SH SOLE 75000 0 0 BROOKFIELD ASSET MGMT INC CL A LTD VT SH 112585104 729218 18233027 SH SOLE 18233027 0 0 BROOKFIELD PPTYS CORP COM 112900105 30832 1263885 SH SOLE 1263885 0 0 CAE INC COM 124765108 22188 1664757 SH SOLE 1664757 0 0 CAMECO CORP COM 13321L108 49775 982039 SH SOLE 982039 0 0 CANADIAN NAT RES LTD COM 136385101 182039 2740102 SH SOLE 2740102 0 0 CANADIAN NATL RY CO COM 136375102 365772 7189918 SH SOLE 7189918 0 0 CANADIAN PAC RY LTD COM 13645T100 55252 800128 SH SOLE 800128 0 0 CANETIC RES TR COM 137513107 11746 722500 SH SOLE 722500 0 0 CATERPILLAR INC DEL COM 149123101 1351 17240 SH DEFINED 1 17240 0 0 CDN IMPERIAL BK OF COMMERCE COM 136069101 1364286 15142307 SH SOLE 15142307 0 0 CELESTICA INC SUB VTG SHS 15101Q108 1961 310960 SH SOLE 310960 0 0 CENTENNIAL COMMUNCTNS CORP N CL A NEW 15133V208 245 25845 SH SOLE 25845 0 0 CHC HELICOPTER CORP CL A SUB VTG 12541C203 30200 1170000 SH SOLE 1170000 0 0 CHESAPEAKE ENERGY CORP COM 165167107 3460 100000 SH SOLE 100000 0 0 CISCO SYS INC COM 17275R102 501 18655 SH DEFINED 1 18655 0 0 CITIGROUP INC COM 172967101 894 17430 SH DEFINED 1 17430 0 0 CITIGROUP INC COM 172967101 15387 300000 SH SOLE 300000 0 0 COCA COLA CO COM 191216100 929 17745 SH DEFINED 1 17745 0 0 COCA COLA CO COM 191216100 2616 50000 SH SOLE 50000 0 0 COGNOS INC COM 19244C109 5595 140331 SH SOLE 140331 0 0 CONCUR TECHNOLOGIES INC COM 206708109 336 14709 SH SOLE 14709 0 0 CORUS ENTERTAINMENT INC COM CL B NON VTG 220874101 15960 341433 SH SOLE 341433 0 0 COTT CORP QUE COM 22163N106 1626 112078 SH SOLE 112078 0 0 CVS CAREMARK CORPORATION COM 126650100 12758 350000 SH SOLE 350000 0 0 DISNEY WALT CO COM DISNEY 254687106 606 17745 SH DEFINED 1 17745 0 0 DORAL FINL CORP COM 25811P100 295 250000 SH SOLE 250000 0 0 DOW CHEM CO COM 260543103 3317 75000 SH SOLE 75000 0 0 DU PONT E I DE NEMOURS & CO COM 263534109 857 16845 SH DEFINED 1 16845 0 0 ENBRIDGE INC COM 29250N105 534725 15868984 SH SOLE 15868984 0 0 ENCANA CORP COM 292505104 301664 4905262 SH SOLE 4905262 0 0 ENERGY METALS CORP COM 29271B106 1537 105000 SH SOLE 105000 0 0 ENERPLUS RES FD UNIT TR G NEW 29274D604 37733 802892 SH 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8559534 0 0 INTEL CORP COM 458140100 1083 47745 SH DEFINED 1 47745 0 0 INTEL CORP COM 458140100 7122 300000 SH SOLE 300000 0 0 INTERNATIONAL BUSINESS MACHS COM 459200101 1869 17745 SH DEFINED 1 17745 0 0 INTEROIL CORP COM 460951106 4745 246970 SH SOLE 246970 0 0 IPSCO INC COM 462622101 11650 73699 SH SOLE 73699 0 0 ISHARES INC MSCI MEXICO 464286822 1547 25000 SH SOLE 25000 0 0 ISHARES INC MSCI FRANCE 464286707 4799 125000 SH SOLE 125000 0 0 ISHARES TR DJ US REAL EST 464287739 3677 47630 SH SOLE 47630 0 0 ISHARES TR FTSE XNHUA IDX 464287184 3672 28500 SH SOLE 28500 0 0 ISHARES TR MSCI EAFE IDX 464287465 1754 21710 SH SOLE 21710 0 0 ISHARES TR MSCI EMERG MKT 464287234 5424 41200 SH SOLE 41200 0 0 JOHNSON & JOHNSON COM 478160104 1441 23245 SH DEFINED 1 23245 0 0 JOHNSON & JOHNSON COM 478160104 4622 75000 SH SOLE 75000 0 0 JP MORGAN CHASE & CO COM 46625H100 861 17745 SH DEFINED 1 17745 0 0 KINROSS GOLD CORP COM NO PAR 496902404 10732 922833 SH SOLE 922833 0 0 LUNDIN MINING CORP COM 550372106 5397 447153 SH SOLE 447153 0 0 MAGNA INTL INC CL A 559222401 327160 3574931 SH SOLE 3574931 0 0 MANULIFE FINL CORP COM 56501R106 1900258 50816643 SH SOLE 50816643 0 0 MARKET VECTORS ETF TR GOLD MINER ETF 57060U100 1229 32500 SH SOLE 32500 0 0 MASTERCARD INC CL A 57636Q104 8290 55433 SH SOLE 55433 0 0 MCDONALDS CORP COM 580135101 902 17745 SH DEFINED 1 17745 0 0 MDS INC COM 55269P302 7468 366648 SH SOLE 366648 0 0 MERCK & CO INC COM 589331107 860 17245 SH DEFINED 1 17245 0 0 METHANEX CORP COM 59151K108 34744 1399998 SH SOLE 1399998 0 0 MI DEVS INC CL A SUB VTG 55304X104 34922 959412 SH SOLE 959412 0 0 MICROSOFT CORP COM 594918104 951 31745 SH DEFINED 1 31745 0 0 MOLSON COORS BREWING CO CL B 60871R209 3701 40091 SH SOLE 40091 0 0 NEUROCHEM INC COM 64125K101 1593 245900 SH SOLE 245900 0 0 NEXEN INC COM 65334H102 89136 2877741 SH SOLE 2877741 0 0 NISOURCE INC COM 65473P105 6213 300000 SH SOLE 300000 0 0 NORTEL NETWORKS CORP NEW COM NEW 656568508 16433 681764 SH SOLE 681764 0 0 NOVA CHEMICALS CORP COM 66977W109 63437 1774842 SH SOLE 1774842 0 0 OPPENHEIMER HLDGS INC CL A NON VTG 683797104 429 8336 SH SOLE 8336 0 0 ORBITAL SCIENCES CORP COM 685564106 305 14500 SH DEFINED 1 0 0 14500 PATTERSON UTI ENERGY INC COM 703481101 7863 300000 SH SOLE 300000 0 0 PENN WEST ENERGY TR TR UNIT 707885109 31766 950138 SH SOLE 950138 0 0 PERU COPPER INC COM 715455101 1171 192000 SH SOLE 192000 0 0 PETRO-CDA COM 71644E102 156771 2943153 SH SOLE 2943153 0 0 PFIZER INC COM 717081103 441 17245 SH DEFINED 1 17245 0 0 PFIZER INC COM 717081103 19178 750000 SH SOLE 750000 0 0 POPULAR INC COM 733174106 2411 150000 SH SOLE 150000 0 0 POTASH CORP SASK INC COM 73755L107 82809 1059369 SH SOLE 1059369 0 0 PRECISION DRILLING TR TR UNIT 740215108 5431 222531 SH SOLE 222531 0 0 PRIMEWEST ENERGY TR TR UNIT NEW 741930309 3417 162600 SH SOLE 162600 0 0 PROCTER & GAMBLE CO COM 742718109 1084 17695 SH DEFINED 1 17695 0 0 PROVIDENT ENERGY TR TR UNIT 74386K104 4501 383000 SH SOLE 383000 0 0 QUEBECOR 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866796105 926958 19455895 SH SOLE 19455895 0 0 SUNCOR ENERGY INC COM 867229106 189877 2108122 SH SOLE 2108122 0 0 TALISMAN ENERGY INC COM 87425E103 449554 23250255 SH SOLE 23250255 0 0 TATA MTRS LTD SPONSORED ADR 876568502 3001 185700 SH SOLE 185700 0 0 TECK COMINCO LTD CL B 878742204 524183 12355399 SH SOLE 12355399 0 0 TELUS CORP NON-VTG SHS 87971M202 344994 5857512 SH SOLE 5857512 0 0 THOMSON CORP COM 884903105 406308 9951282 SH SOLE 9951282 0 0 TIM HORTONS INC COM 88706M103 9132 296175 SH SOLE 296175 0 0 TORONTO DOMINION BK ONT COM NEW 891160509 2177802 31845054 SH SOLE 31845054 0 0 TRANSALTA CORP COM 89346D107 158071 6295670 SH SOLE 6295670 0 0 TRANSALTA CORP COM 89346D107 53982 2150000 SH SOLE 1 2150000 0 0 TRANSCANADA CORP COM 89353D107 30092 875000 SH SOLE 1 875000 0 0 TRANSCANADA CORP COM 89353D107 702866 20437591 SH SOLE 20437591 0 0 UNITED TECHNOLOGIES CORP COM 913017109 1224 17240 SH DEFINED 1 17240 0 0 VALERO ENERGY CORP NEW COM 91913Y100 7386 100000 SH SOLE 100000 0 0 VERIZON COMMUNICATIONS COM 92343V104 731 17745 SH DEFINED 1 17745 0 0 WAL MART STORES INC COM 931142103 826 17145 SH DEFINED 1 17145 0 0 WAL MART STORES INC COM 931142103 6014 125000 SH SOLE 125000 0 0 WEIGHT WATCHERS INTL INC NEW COM 948626106 993 19534 SH DEFINED 1 0 0 19534 WHOLE FOODS MKT INC COM 966837106 3830 100000 SH SOLE 100000 0 0 YAMANA GOLD INC COM 98462Y100 5388 485219 SH SOLE 485219 0 0 YM BIOSCIENCES INC COM 984238105 803 448000 SH SOLE 448000 0 0 ZALE CORP NEW COM 988858106 2381 100000 SH SOLE 100000 0 0