Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 498,358 |
| Open | 8.570 |
| Bid (Size) | 9.180 (300) |
| Ask (Size) | 9.210 (500) |
| 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
22.1% below 52-week high
9.190
7.7352W Low
11.8052W High
1 Week
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 $9.19, 22.1% below its 52-week high. Over the past week it ranged between $7.80 and $8.81.
Past 12 Months
1W
+$0.83
1M
-$0.35
3M
-$0.45
6M
-$1.39
YTD
-$0.01
1Y
-$1.16
PRTA was -11.2% over the past year, -13.1% over six months, -0.1% year to date, +9.9% in the last week.
12 Months vs Market
PRTA
-11.2%
DIA
+10.7%
SPY
+15.6%
QQQ
+22.8%
IWM
+13.1%
Over the past 12 months PRTA returned -11.2% versus DIA (Dow) +10.7%, SPY (S&P 500) +15.6%, QQQ (Nasdaq 100) +22.8% and IWM (Russell 2000) +13.1%.
Volume & Liquidity
1.03× 3-mo avg
Today 498,358
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 498,358 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 9.190
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/09/26 01:43 PM ET
What is the market capitalization of Prothena Corporation plc - Ordinary Shares?
The market capitalization of Prothena Corporation plc - Ordinary Shares is 413.99M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 414M shares outstanding.
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