Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 40,184 |
| Open | 8.480 |
| Bid (Size) | 8.390 (300) |
| Ask (Size) | 8.410 (300) |
| Prev. Close | 8.210 |
| Today's Range | 8.380 - 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
28.8% below 52-week high
8.400
7.7352W Low
11.8052W High
1 Week
9.3% 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 $8.40, 28.8% below its 52-week high. Over the past week it ranged between $8.11 and $9.26.
Past 12 Months
1W
-$0.70
1M
+$0.13
3M
-$0.09
6M
-$2.79
YTD
-$0.80
1Y
-$2.14
PRTA was -20.3% over the past year, -24.9% over six months, -8.7% year to date, -7.7% in the last week.
12 Months vs Market
PRTA
-20.3%
DIA
+12.0%
SPY
+12.1%
QQQ
+10.5%
IWM
+15.2%
Over the past 12 months PRTA returned -20.3% versus DIA (Dow) +12.0%, SPY (S&P 500) +12.1%, QQQ (Nasdaq 100) +10.5% and IWM (Russell 2000) +15.2%.
Volume & Liquidity
0.09× 3-mo avg
Today 40,184
3-mo avg 466.9K
1W
465.2K
1M
540.7K
3M
466.9K
6M
522.9K
YTD
510.6K
1Y
538.7K
PRTA most recently traded 40,184 shares against a 3-month average daily volume of 466.9K.
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 8.400
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 11/04/26 10:17 AM ET
What is the market capitalization of Prothena Corporation plc - Ordinary Shares?
The market capitalization of Prothena Corporation plc - Ordinary Shares is 378.40M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 378M shares outstanding.
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