Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 110,394 |
| Open | 8.335 |
| Bid (Size) | 8.100 (300) |
| Ask (Size) | 8.130 (300) |
| Prev. Close | 8.360 |
| Today's Range | 8.050 - 8.370 |
| 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
31.2% below 52-week high
8.115
7.7352W Low
11.8052W High
1 Week
9.7% below 1-week high
8.071W Low
8.991W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.12, 31.2% below its 52-week high. Over the past week it ranged between $8.07 and $8.99.
Past 12 Months
1W
-$0.61
1M
-$1.71
3M
-$1.38
6M
-$1.92
YTD
-$1.08
1Y
-$1.74
PRTA was -17.7% over the past year, -19.2% over six months, -11.8% year to date, -6.9% in the last week.
12 Months vs Market
PRTA
-17.7%
DIA
+9.2%
SPY
+14.9%
QQQ
+23.8%
IWM
+14.2%
Over the past 12 months PRTA returned -17.7% versus DIA (Dow) +9.2%, SPY (S&P 500) +14.9%, QQQ (Nasdaq 100) +23.8% and IWM (Russell 2000) +14.2%.
Volume & Liquidity
0.23× 3-mo avg
Today 110,394
3-mo avg 473.5K
1W
571.8K
1M
496.8K
3M
473.5K
6M
499.8K
YTD
507.1K
1Y
542.2K
PRTA most recently traded 110,394 shares against a 3-month average daily volume of 473.5K.
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 8.115
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/05/26 10:09 AM ET
What is the market capitalization of Prothena Corporation plc - Ordinary Shares?
The market capitalization of Prothena Corporation plc - Ordinary Shares is 365.56M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 366M shares outstanding.
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