Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 620,028 |
| Open | 8.280 |
| Bid (Size) | 7.770 (200) |
| Ask (Size) | 8.490 (100) |
| 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
29.1% below 52-week high
8.370
7.7352W Low
11.8052W High
1 Week
10.0% below 1-week high
8.191W 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 $8.37, 29.1% below its 52-week high. Over the past week it ranged between $8.19 and $9.30.
Past 12 Months
1W
-$0.24
1M
-$0.49
3M
-$0.06
6M
-$2.45
YTD
-$0.83
1Y
-$1.75
PRTA was -17.3% over the past year, -22.6% over six months, -9.0% year to date, -2.8% in the last week.
12 Months vs Market
PRTA
-17.3%
DIA
+11.4%
SPY
+16.2%
QQQ
+21.9%
IWM
+9.5%
Over the past 12 months PRTA returned -17.3% versus DIA (Dow) +11.4%, SPY (S&P 500) +16.2%, QQQ (Nasdaq 100) +21.9% and IWM (Russell 2000) +9.5%.
Volume & Liquidity
1.27× 3-mo avg
Today 620,028
3-mo avg 489.4K
1W
651.4K
1M
584.2K
3M
489.4K
6M
514.6K
YTD
512.8K
1Y
541.5K
PRTA most recently traded 620,028 shares against a 3-month average daily volume of 489.4K.
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 8.370
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/14/26 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 377.05M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 377M shares outstanding.
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