Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 36,266 |
| Open | 8.540 |
| Bid (Size) | 8.610 (600) |
| Ask (Size) | 8.650 (100) |
| Prev. Close | 8.370 |
| Today's Range | 8.440 - 8.640 |
| 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
26.9% below 52-week high
8.630
7.7352W Low
11.8052W High
1 Week
7.3% 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 $8.63, 26.9% below its 52-week high. Over the past week it ranged between $8.19 and $9.30.
Past 12 Months
1W
+$0.02
1M
-$0.23
3M
+$0.20
6M
-$2.19
YTD
-$0.57
1Y
-$1.49
PRTA was -14.7% over the past year, -20.2% over six months, -6.2% year to date, +0.2% in the last week.
12 Months vs Market
PRTA
-14.7%
DIA
+12.0%
SPY
+15.8%
QQQ
+20.3%
IWM
+10.1%
Over the past 12 months PRTA returned -14.7% versus DIA (Dow) +12.0%, SPY (S&P 500) +15.8%, QQQ (Nasdaq 100) +20.3% and IWM (Russell 2000) +10.1%.
Volume & Liquidity
0.07× 3-mo avg
Today 36,266
3-mo avg 489.4K
1W
651.4K
1M
584.2K
3M
489.4K
6M
514.6K
YTD
512.8K
1Y
541.5K
PRTA most recently traded 36,266 shares against a 3-month average daily volume of 489.4K.
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 8.630
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/15/26 10:05 AM ET
What is the market capitalization of Prothena Corporation plc - Ordinary Shares?
The market capitalization of Prothena Corporation plc - Ordinary Shares is 388.76M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 389M shares outstanding.
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