Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 239,376 |
| Open | 8.280 |
| Bid (Size) | 8.420 (200) |
| Ask (Size) | 8.450 (400) |
| Prev. Close | 8.360 |
| Today's Range | 8.190 - 8.560 |
| 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
28.6% below 52-week high
8.430
7.7352W Low
11.8052W High
1 Week
9.4% below 1-week high
7.881W Low
9.301W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.43, 28.6% below its 52-week high. Over the past week it ranged between $7.88 and $9.30.
Past 12 Months
1W
-$0.05
1M
-$0.43
3M
-$0.21
6M
-$2.18
YTD
-$0.77
1Y
-$1.92
PRTA was -18.6% over the past year, -20.5% over six months, -8.4% year to date, -0.6% in the last week.
12 Months vs Market
PRTA
-18.6%
DIA
+11.6%
SPY
+16.1%
QQQ
+21.4%
IWM
+11.1%
Over the past 12 months PRTA returned -18.6% versus DIA (Dow) +11.6%, SPY (S&P 500) +16.1%, QQQ (Nasdaq 100) +21.4% and IWM (Russell 2000) +11.1%.
Volume & Liquidity
0.49× 3-mo avg
Today 239,376
3-mo avg 488.0K
1W
665.5K
1M
582.6K
3M
488.0K
6M
512.7K
YTD
512.3K
1Y
541.8K
PRTA most recently traded 239,376 shares against a 3-month average daily volume of 488.0K.
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 8.430
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/14/26 01:08 PM ET
What is the market capitalization of Prothena Corporation plc - Ordinary Shares?
The market capitalization of Prothena Corporation plc - Ordinary Shares is 379.75M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 380M shares outstanding.
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