Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 462,460 |
| Open | 8.450 |
| Bid (Size) | 8.000 (100) |
| Ask (Size) | 10.00 (100) |
| Prev. Close | 8.470 |
| Today's Range | 8.105 - 8.490 |
| 52wk Range | 7.730 - 11.80 |
| Shares Outstanding | 45,047,449 |
| Dividend Yield | N/A |
Top News
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Performance
52-Week Range
29.7% below 52-week high
8.290
7.7352W Low
11.8052W High
1 Week
10.5% below 1-week high
8.111W Low
9.261W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.29, 29.7% below its 52-week high. Over the past week it ranged between $8.11 and $9.26.
Past 12 Months
1W
-$0.11
1M
-$0.07
3M
-$0.04
6M
-$2.50
YTD
-$0.91
1Y
-$2.25
PRTA was -21.3% over the past year, -23.2% over six months, -9.9% year to date, -1.3% in the last week.
12 Months vs Market
PRTA
-21.3%
DIA
+9.7%
SPY
+10.1%
QQQ
+7.8%
IWM
+13.7%
Over the past 12 months PRTA returned -21.3% versus DIA (Dow) +9.7%, SPY (S&P 500) +10.1%, QQQ (Nasdaq 100) +7.8% and IWM (Russell 2000) +13.7%.
Volume & Liquidity
0.98× 3-mo avg
Today 462,460
3-mo avg 471.2K
1W
547.6K
1M
558.2K
3M
471.2K
6M
525.3K
YTD
511.7K
1Y
539.7K
PRTA most recently traded 462,460 shares against a 3-month average daily volume of 471.2K.
More News
Read More
Earnings Scheduled For November 6, 2025 ↗
November 06, 2025
What's going on in today's after hours session ↗
April 27, 2026
Prothena Announces Leadership Team Updates
April 10, 2026
Prothena Announces up to $100 Million Share Repurchase Plan
February 27, 2026
Prothena Announces Board of Directors Update
December 12, 2025
Frequently Asked Questions
Is Prothena Corporation plc - Ordinary Shares publicly traded?
Yes, Prothena Corporation plc - Ordinary Shares is publicly traded.
What exchange does Prothena Corporation plc - Ordinary Shares trade on?
Prothena Corporation plc - Ordinary Shares trades on the Nasdaq Stock Market
What is the ticker symbol for Prothena Corporation plc - Ordinary Shares?
The ticker symbol for Prothena Corporation plc - Ordinary Shares is PRTA on the Nasdaq Stock Market
What is the current price of Prothena Corporation plc - Ordinary Shares?
The current price of Prothena Corporation plc - Ordinary Shares is 8.290
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 11/02/26 04:00 PM ET
What is the market capitalization of Prothena Corporation plc - Ordinary Shares?
The market capitalization of Prothena Corporation plc - Ordinary Shares is 373.44M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 373M shares outstanding.
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