Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 642,409 |
| Open | 8.430 |
| Bid (Size) | 7.770 (100) |
| Ask (Size) | 10.25 (1,000) |
| Prev. Close | 8.480 |
| Today's Range | 8.360 - 8.810 |
| 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
27.0% below 52-week high
8.610
7.7352W Low
11.8052W High
1 Week
2.3% below 1-week high
7.801W Low
8.811W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.61, 27.0% below its 52-week high. Over the past week it ranged between $7.80 and $8.81.
Past 12 Months
1W
+$0.25
1M
-$0.93
3M
-$1.03
6M
-$1.97
YTD
-$0.59
1Y
-$1.74
PRTA was -16.8% over the past year, -18.6% over six months, -6.4% year to date, +3.0% in the last week.
12 Months vs Market
PRTA
-16.8%
DIA
+9.8%
SPY
+15.0%
QQQ
+22.3%
IWM
+12.5%
Over the past 12 months PRTA returned -16.8% versus DIA (Dow) +9.8%, SPY (S&P 500) +15.0%, QQQ (Nasdaq 100) +22.3% and IWM (Russell 2000) +12.5%.
Volume & Liquidity
1.33× 3-mo avg
Today 642,409
3-mo avg 484.5K
1W
646.5K
1M
526.5K
3M
484.5K
6M
505.4K
YTD
509.9K
1Y
542.6K
PRTA most recently traded 642,409 shares against a 3-month average daily volume of 484.5K.
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 8.610
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/08/26 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 387.86M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 388M shares outstanding.
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