Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 288,887 |
| Open | 8.300 |
| Bid (Size) | 8.030 (300) |
| Ask (Size) | 9.790 (100) |
| Prev. Close | 8.290 |
| Today's Range | 8.150 - 8.490 |
| 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
30.4% below 52-week high
8.210
7.7352W Low
11.8052W High
1 Week
11.3% below 1-week high
8.111W Low
9.261W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.21, 30.4% below its 52-week high. Over the past week it ranged between $8.11 and $9.26.
Past 12 Months
1W
-$0.60
1M
-$0.06
3M
-$0.12
6M
-$2.58
YTD
-$0.99
1Y
-$2.33
PRTA was -22.1% over the past year, -23.9% over six months, -10.8% year to date, -6.8% in the last week.
12 Months vs Market
PRTA
-22.1%
DIA
+9.2%
SPY
+10.4%
QQQ
+8.4%
IWM
+14.0%
Over the past 12 months PRTA returned -22.1% versus DIA (Dow) +9.2%, SPY (S&P 500) +10.4%, QQQ (Nasdaq 100) +8.4% and IWM (Russell 2000) +14.0%.
Volume & Liquidity
0.61× 3-mo avg
Today 288,887
3-mo avg 471.2K
1W
538.2K
1M
552.6K
3M
471.2K
6M
525.3K
YTD
511.7K
1Y
539.7K
PRTA most recently traded 288,887 shares against a 3-month average daily volume of 471.2K.
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 8.210
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 11/03/26 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 369.84M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 370M shares outstanding.
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