Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 931,629 |
| Open | 8.570 |
| Bid (Size) | 8.300 (100) |
| Ask (Size) | 9.100 (5,000) |
| Prev. Close | 8.610 |
| Today's Range | 8.500 - 9.305 |
| 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
25.1% below 52-week high
8.840
7.7352W Low
11.8052W High
1 Week
5.0% below 1-week high
7.801W 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 $8.84, 25.1% below its 52-week high. Over the past week it ranged between $7.80 and $9.30.
Past 12 Months
1W
+$0.57
1M
-$0.18
3M
+$0.01
6M
-$1.47
YTD
-$0.36
1Y
-$1.21
PRTA was -12.0% over the past year, -14.3% over six months, -3.9% year to date, +6.9% in the last week.
12 Months vs Market
PRTA
-12.0%
DIA
+13.5%
SPY
+19.2%
QQQ
+27.4%
IWM
+17.3%
Over the past 12 months PRTA returned -12.0% versus DIA (Dow) +13.5%, SPY (S&P 500) +19.2%, QQQ (Nasdaq 100) +27.4% and IWM (Russell 2000) +17.3%.
Volume & Liquidity
1.90× 3-mo avg
Today 931,629
3-mo avg 491.2K
1W
697.7K
1M
565.5K
3M
491.2K
6M
511.0K
YTD
512.1K
1Y
542.7K
PRTA most recently traded 931,629 shares against a 3-month average daily volume of 491.2K.
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 8.840
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/09/26 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 398.22M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 398M shares outstanding.
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