Financial News
Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 334,930 |
| Open | 8.470 |
| Bid (Size) | 8.090 (600) |
| Ask (Size) | 8.120 (300) |
| Prev. Close | 8.500 |
| Today's Range | 8.010 - 8.540 |
| 52wk Range | 7.730 - 11.80 |
| Shares Outstanding | 45,047,449 |
| Dividend Yield | N/A |
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Performance
52-Week Range
31.3% below 52-week high
8.110
7.7352W Low
11.8052W High
1 Week
6.2% below 1-week high
8.191W Low
8.651W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.11, 31.3% below its 52-week high. Over the past week it ranged between $8.19 and $8.65.
Past 12 Months
1W
-$0.26
1M
-$0.40
3M
-$0.64
6M
-$2.56
YTD
-$1.09
1Y
-$2.26
PRTA was -21.8% over the past year, -24.0% over six months, -11.8% year to date, -3.1% in the last week.
12 Months vs Market
PRTA
-21.8%
DIA
+12.8%
SPY
+15.2%
QQQ
+18.8%
IWM
+11.5%
Over the past 12 months PRTA returned -21.8% versus DIA (Dow) +12.8%, SPY (S&P 500) +15.2%, QQQ (Nasdaq 100) +18.8% and IWM (Russell 2000) +11.5%.
Volume & Liquidity
0.69× 3-mo avg
Today 334,930
3-mo avg 486.2K
1W
507.8K
1M
546.5K
3M
486.2K
6M
517.7K
YTD
512.1K
1Y
538.8K
PRTA most recently traded 334,930 shares against a 3-month average daily volume of 486.2K.
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 8.110
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/21/26 03:46 PM ET
What is the market capitalization of Prothena Corporation plc - Ordinary Shares?
The market capitalization of Prothena Corporation plc - Ordinary Shares is 365.33M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 365M shares outstanding.
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