Financial News
Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 388,821 |
| Open | 8.430 |
| Bid (Size) | 8.710 (100) |
| Ask (Size) | 8.720 (400) |
| Prev. Close | 8.480 |
| Today's Range | 8.360 - 8.810 |
| 52wk Range | 7.730 - 11.80 |
| Shares Outstanding | 45,047,449 |
| Dividend Yield | N/A |
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Performance
52-Week Range
26.1% below 52-week high
8.720
7.7352W Low
11.8052W High
1 Week
7.801W Low
8.631W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.72, 26.1% below its 52-week high. Over the past week it ranged between $7.80 and $8.63.
Past 12 Months
1W
+$0.18
1M
-$0.82
3M
-$1.13
6M
-$1.93
YTD
-$0.48
1Y
-$1.45
PRTA was -14.3% over the past year, -18.1% over six months, -5.2% year to date, +2.1% in the last week.
12 Months vs Market
PRTA
-14.3%
DIA
+9.6%
SPY
+15.5%
QQQ
+23.6%
IWM
+13.6%
Over the past 12 months PRTA returned -14.3% versus DIA (Dow) +9.6%, SPY (S&P 500) +15.5%, QQQ (Nasdaq 100) +23.6% and IWM (Russell 2000) +13.6%.
Volume & Liquidity
0.81× 3-mo avg
Today 388,821
3-mo avg 481.5K
1W
609.5K
1M
521.2K
3M
481.5K
6M
503.9K
YTD
509.2K
1Y
544.1K
PRTA most recently traded 388,821 shares against a 3-month average daily volume of 481.5K.
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 8.720
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/08/26 02:34 PM ET
What is the market capitalization of Prothena Corporation plc - Ordinary Shares?
The market capitalization of Prothena Corporation plc - Ordinary Shares is 392.81M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 393M shares outstanding.
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