Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 137,699 |
| Open | 8.790 |
| Bid (Size) | 8.490 (200) |
| Ask (Size) | 8.520 (400) |
| Prev. Close | 8.880 |
| Today's Range | 8.495 - 8.900 |
| 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
27.9% below 52-week high
8.505
7.7352W Low
11.8052W High
1 Week
8.2% below 1-week high
7.931W Low
9.261W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.51, 27.9% below its 52-week high. Over the past week it ranged between $7.93 and $9.26.
Past 12 Months
1W
+$0.31
1M
-$0.27
3M
+$0.10
6M
-$2.55
YTD
-$0.69
1Y
-$2.14
PRTA was -20.1% over the past year, -23.1% over six months, -7.6% year to date, +3.7% in the last week.
12 Months vs Market
PRTA
-20.1%
DIA
+8.9%
SPY
+10.1%
QQQ
+8.8%
IWM
+13.1%
Over the past 12 months PRTA returned -20.1% versus DIA (Dow) +8.9%, SPY (S&P 500) +10.1%, QQQ (Nasdaq 100) +8.8% and IWM (Russell 2000) +13.1%.
Volume & Liquidity
0.29× 3-mo avg
Today 137,699
3-mo avg 473.2K
1W
551.4K
1M
567.9K
3M
473.2K
6M
524.7K
YTD
512.2K
1Y
539.7K
PRTA most recently traded 137,699 shares against a 3-month average daily volume of 473.2K.
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 8.505
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/30/26 12:24 PM ET
What is the market capitalization of Prothena Corporation plc - Ordinary Shares?
The market capitalization of Prothena Corporation plc - Ordinary Shares is 383.13M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 383M shares outstanding.
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