Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 386,147 |
| Open | 8.180 |
| Bid (Size) | 7.000 (500) |
| Ask (Size) | 9.100 (5,000) |
| Prev. Close | 8.250 |
| Today's Range | 7.930 - 8.268 |
| 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
30.5% below 52-week high
8.200
7.7352W Low
11.8052W High
1 Week
5.1% below 1-week high
7.931W Low
8.641W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.20, 30.5% below its 52-week high. Over the past week it ranged between $7.93 and $8.64.
Past 12 Months
1W
-$0.28
1M
-$0.12
3M
-$0.50
6M
-$2.59
YTD
-$1.00
1Y
-$1.62
PRTA was -16.5% over the past year, -24.0% over six months, -10.9% year to date, -3.3% in the last week.
12 Months vs Market
PRTA
-16.5%
DIA
+10.4%
SPY
+12.2%
QQQ
+14.1%
IWM
+10.6%
Over the past 12 months PRTA returned -16.5% versus DIA (Dow) +10.4%, SPY (S&P 500) +12.2%, QQQ (Nasdaq 100) +14.1% and IWM (Russell 2000) +10.6%.
Volume & Liquidity
0.81× 3-mo avg
Today 386,147
3-mo avg 477.1K
1W
423.9K
1M
549.3K
3M
477.1K
6M
519.2K
YTD
510.6K
1Y
539.4K
PRTA most recently traded 386,147 shares against a 3-month average daily volume of 477.1K.
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 8.200
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/23/26 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 369.39M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 369M shares outstanding.