Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 358,357 |
| Open | 8.540 |
| Bid (Size) | 8.510 (300) |
| Ask (Size) | 9.100 (5,000) |
| Prev. Close | 8.370 |
| Today's Range | 8.440 - 8.650 |
| 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
28.0% below 52-week high
8.500
7.7352W Low
11.8052W High
1 Week
8.7% below 1-week high
8.191W Low
9.301W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.50, 28.0% below its 52-week high. Over the past week it ranged between $8.19 and $9.30.
Past 12 Months
1W
-$0.11
1M
-$0.36
3M
+$0.07
6M
-$2.32
YTD
-$0.70
1Y
-$1.62
PRTA was -16.0% over the past year, -21.4% over six months, -7.6% year to date, -1.3% in the last week.
12 Months vs Market
PRTA
-16.0%
DIA
+12.6%
SPY
+16.5%
QQQ
+21.7%
IWM
+11.0%
Over the past 12 months PRTA returned -16.0% versus DIA (Dow) +12.6%, SPY (S&P 500) +16.5%, QQQ (Nasdaq 100) +21.7% and IWM (Russell 2000) +11.0%.
Volume & Liquidity
0.74× 3-mo avg
Today 358,357
3-mo avg 487.4K
1W
602.6K
1M
574.8K
3M
487.4K
6M
513.4K
YTD
512.0K
1Y
540.8K
PRTA most recently traded 358,357 shares against a 3-month average daily volume of 487.4K.
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 8.500
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/15/26 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 382.90M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 383M shares outstanding.
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