Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 510,608 |
| Open | 8.280 |
| Bid (Size) | 8.150 (800) |
| Ask (Size) | 8.250 (100) |
| Prev. Close | 8.270 |
| Today's Range | 7.800 - 8.280 |
| 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
32.0% below 52-week high
8.020
7.7352W Low
11.8052W High
1 Week
10.8% below 1-week high
7.801W Low
8.991W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.02, 32.0% below its 52-week high. Over the past week it ranged between $7.80 and $8.99.
Past 12 Months
1W
-$0.36
1M
-$1.52
3M
-$1.66
6M
-$2.34
YTD
-$1.18
1Y
-$1.84
PRTA was -18.7% over the past year, -22.6% over six months, -12.8% year to date, -4.3% in the last week.
12 Months vs Market
PRTA
-18.7%
DIA
+10.2%
SPY
+16.0%
QQQ
+25.0%
IWM
+14.0%
Over the past 12 months PRTA returned -18.7% versus DIA (Dow) +10.2%, SPY (S&P 500) +16.0%, QQQ (Nasdaq 100) +25.0% and IWM (Russell 2000) +14.0%.
Volume & Liquidity
1.07× 3-mo avg
Today 510,608
3-mo avg 478.9K
1W
598.4K
1M
513.1K
3M
478.9K
6M
502.3K
YTD
508.2K
1Y
542.8K
PRTA most recently traded 510,608 shares against a 3-month average daily volume of 478.9K.
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 8.020
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/06/26 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 361.28M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 361M shares outstanding.