Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 654,354 |
| Open | 8.400 |
| Bid (Size) | 7.240 (100) |
| Ask (Size) | 9.100 (5,000) |
| Prev. Close | 8.400 |
| Today's Range | 8.350 - 8.850 |
| 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
25.3% below 52-week high
8.810
7.7352W Low
11.8052W High
1 Week
0.5% below 1-week high
7.931W Low
8.851W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.81, 25.3% below its 52-week high. Over the past week it ranged between $7.93 and $8.85.
Past 12 Months
1W
+$0.31
1M
+$0.09
3M
+$0.11
6M
-$1.98
YTD
-$0.39
1Y
-$1.56
PRTA was -15.0% over the past year, -18.4% over six months, -4.2% year to date, +3.6% in the last week.
12 Months vs Market
PRTA
-15.0%
DIA
+10.1%
SPY
+12.3%
QQQ
+14.8%
IWM
+11.9%
Over the past 12 months PRTA returned -15.0% versus DIA (Dow) +10.1%, SPY (S&P 500) +12.3%, QQQ (Nasdaq 100) +14.8% and IWM (Russell 2000) +11.9%.
Volume & Liquidity
1.36× 3-mo avg
Today 654,354
3-mo avg 481.6K
1W
501.2K
1M
564.9K
3M
481.6K
6M
520.8K
YTD
511.7K
1Y
540.7K
PRTA most recently traded 654,354 shares against a 3-month average daily volume of 481.6K.
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 8.810
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/27/26 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 396.87M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 397M shares outstanding.
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