Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 361,121 |
| Open | 8.390 |
| Bid (Size) | 8.000 (100) |
| Ask (Size) | 9.100 (5,000) |
| Prev. Close | 8.350 |
| Today's Range | 8.310 - 8.570 |
| 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
28.1% below 52-week high
8.480
7.7352W Low
11.8052W High
1 Week
3.7% below 1-week high
8.191W 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 $8.48, 28.1% below its 52-week high. Over the past week it ranged between $8.19 and $8.81.
Past 12 Months
1W
+$0.05
1M
-$0.10
3M
-$0.19
6M
-$2.31
YTD
-$0.72
1Y
-$1.89
PRTA was -18.2% over the past year, -21.4% over six months, -7.8% year to date, +0.6% in the last week.
12 Months vs Market
PRTA
-18.2%
DIA
+11.1%
SPY
+14.2%
QQQ
+17.5%
IWM
+9.3%
Over the past 12 months PRTA returned -18.2% versus DIA (Dow) +11.1%, SPY (S&P 500) +14.2%, QQQ (Nasdaq 100) +17.5% and IWM (Russell 2000) +9.3%.
Volume & Liquidity
0.74× 3-mo avg
Today 361,121
3-mo avg 488.5K
1W
542.3K
1M
617.3K
3M
488.5K
6M
517.4K
YTD
512.8K
1Y
539.6K
PRTA most recently traded 361,121 shares against a 3-month average daily volume of 488.5K.
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 8.480
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/19/26 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 382.00M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 382M shares outstanding.
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