Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 670,257 |
| Open | 8.580 |
| Bid (Size) | 8.000 (100) |
| Ask (Size) | 8.350 (100) |
| Prev. Close | 8.500 |
| Today's Range | 8.240 - 8.620 |
| 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
29.2% below 52-week high
8.350
7.7352W Low
11.8052W High
1 Week
5.2% below 1-week high
8.191W Low
8.811W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.35, 29.2% below its 52-week high. Over the past week it ranged between $8.19 and $8.81.
Past 12 Months
1W
-$0.08
1M
-$0.11
3M
-$0.32
6M
-$2.44
YTD
-$0.85
1Y
-$1.57
PRTA was -15.8% over the past year, -22.6% over six months, -9.2% year to date, -0.9% in the last week.
12 Months vs Market
PRTA
-15.8%
DIA
+12.4%
SPY
+14.9%
QQQ
+17.5%
IWM
+11.1%
Over the past 12 months PRTA returned -15.8% versus DIA (Dow) +12.4%, SPY (S&P 500) +14.9%, QQQ (Nasdaq 100) +17.5% and IWM (Russell 2000) +11.1%.
Volume & Liquidity
1.37× 3-mo avg
Today 670,257
3-mo avg 488.5K
1W
542.3K
1M
607.6K
3M
488.5K
6M
517.4K
YTD
512.8K
1Y
540.5K
PRTA most recently traded 670,257 shares against a 3-month average daily volume of 488.5K.
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 8.350
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/16/26 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 376.15M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 376M shares outstanding.
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