Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 714,460 |
| Open | 8.340 |
| Bid (Size) | 7.770 (200) |
| Ask (Size) | 9.890 (300) |
| Prev. Close | 8.360 |
| Today's Range | 7.910 - 8.370 |
| 52wk Range | 7.730 - 11.80 |
| Shares Outstanding | 45,047,449 |
| Dividend Yield | N/A |
Top News
More News
Performance
52-Week Range
29.9% below 52-week high
8.270
7.7352W Low
11.8052W High
1 Week
8.0% below 1-week high
8.071W 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 $8.27, 29.9% below its 52-week high. Over the past week it ranged between $8.07 and $8.99.
Past 12 Months
1W
-$0.45
1M
-$1.55
3M
-$1.23
6M
-$1.77
YTD
-$0.93
1Y
-$1.59
PRTA was -16.1% over the past year, -17.6% over six months, -10.1% year to date, -5.2% in the last week.
12 Months vs Market
PRTA
-16.1%
DIA
+9.7%
SPY
+15.4%
QQQ
+24.4%
IWM
+14.8%
Over the past 12 months PRTA returned -16.1% versus DIA (Dow) +9.7%, SPY (S&P 500) +15.4%, QQQ (Nasdaq 100) +24.4% and IWM (Russell 2000) +14.8%.
Volume & Liquidity
1.51× 3-mo avg
Today 714,460
3-mo avg 473.5K
1W
571.8K
1M
496.8K
3M
473.5K
6M
499.8K
YTD
507.1K
1Y
542.2K
PRTA most recently traded 714,460 shares against a 3-month average daily volume of 473.5K.
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 8.270
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/05/26 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 372.54M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 373M shares outstanding.