Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 518,497 |
| Open | 8.380 |
| Bid (Size) | 7.910 (1,200) |
| Ask (Size) | 7.940 (500) |
| Prev. Close | 8.390 |
| Today's Range | 7.868 - 8.380 |
| 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
33.1% below 52-week high
7.890
7.7352W Low
11.8052W High
1 Week
14.8% 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 $7.89, 33.1% below its 52-week high. Over the past week it ranged between $8.11 and $9.26.
Past 12 Months
1W
-$0.99
1M
-$0.38
3M
-$0.60
6M
-$3.29
YTD
-$1.31
1Y
-$2.37
PRTA was -23.1% over the past year, -29.4% over six months, -14.2% year to date, -11.1% in the last week.
12 Months vs Market
PRTA
-23.1%
DIA
+9.2%
SPY
+8.6%
QQQ
+4.5%
IWM
+12.3%
Over the past 12 months PRTA returned -23.1% versus DIA (Dow) +9.2%, SPY (S&P 500) +8.6%, QQQ (Nasdaq 100) +4.5% and IWM (Russell 2000) +12.3%.
Volume & Liquidity
1.11× 3-mo avg
Today 518,497
3-mo avg 466.3K
1W
372.6K
1M
529.7K
3M
466.3K
6M
522.8K
YTD
509.6K
1Y
537.5K
PRTA most recently traded 518,497 shares against a 3-month average daily volume of 466.3K.
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 7.890
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 11/05/26 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 355.42M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 355M shares outstanding.
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