Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 121,494 |
| Open | 8.580 |
| Bid (Size) | 8.370 (300) |
| Ask (Size) | 8.410 (400) |
| Prev. Close | 8.500 |
| Today's Range | 8.340 - 8.620 |
| 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
28.9% below 52-week high
8.390
7.7352W Low
11.8052W High
1 Week
9.8% 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 $8.39, 28.9% below its 52-week high. Over the past week it ranged between $8.19 and $9.30.
Past 12 Months
-5.1%
+0.7%
-0.9%
-20.2%
-8.8%
-21.3%
1W
-$0.45
1M
+$0.06
3M
-$0.08
6M
-$2.13
YTD
-$0.81
1Y
-$2.27
PRTA was -21.3% over the past year, -20.2% over six months, -8.8% year to date, -5.1% in the last week.
12 Months vs Market
PRTA
-21.3%
DIA
+13.1%
SPY
+16.1%
QQQ
+20.1%
IWM
+9.7%
Over the past 12 months PRTA returned -21.3% versus DIA (Dow) +13.1%, SPY (S&P 500) +16.1%, QQQ (Nasdaq 100) +20.1% and IWM (Russell 2000) +9.7%.
Volume & Liquidity
0.25× 3-mo avg
Today 121,494
3-mo avg 487.1K
1W
594.6K
1M
583.5K
3M
487.1K
6M
514.2K
YTD
512.0K
1Y
541.4K
PRTA most recently traded 121,494 shares against a 3-month average daily volume of 487.1K.
More News
Read More
Earnings Scheduled For November 6, 2025 ↗
November 06, 2025
Via Benzinga
Via Business Wire
What's going on in today's after hours session ↗
April 27, 2026
Via Chartmill
Prothena Announces Leadership Team Updates
April 10, 2026
Via Business Wire
Prothena Announces up to $100 Million Share Repurchase Plan
February 27, 2026
Via Business Wire
Prothena Announces Board of Directors Update
December 12, 2025
Via Business Wire
Via Business Wire
Via Business Wire
Via Benzinga
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 8.390
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/16/26 10:49 AM ET
What is the market capitalization of Prothena Corporation plc - Ordinary Shares?
The market capitalization of Prothena Corporation plc - Ordinary Shares is 377.95M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 378M shares outstanding.
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