Prothena Corporation plc - Ordinary Shares (NQ:PRTA)
Price and Volume
Detailed Quote| Volume | 741,121 |
| Open | 8.050 |
| Bid (Size) | 8.760 (5,800) |
| Ask (Size) | 8.790 (400) |
| Prev. Close | 7.970 |
| Today's Range | 7.794 - 8.845 |
| 52wk Range | 7.730 - 11.80 |
| Shares Outstanding | 45,047,449 |
| Dividend Yield | N/A |
Top News
More News
Prothena (NASDAQ:PRTA) Posts Q3 2026 Revenue Miss but Narrows Loss ↗
November 05, 2026
Performance
52-Week Range
25.6% below 52-week high
8.775
7.7352W Low
11.8052W High
1 Week
7.871W Low
8.561W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.78, 25.6% below its 52-week high. Over the past week it ranged between $7.87 and $8.56.
Past 12 Months
1W
+$0.49
1M
-$0.06
3M
-$0.34
6M
-$0.89
YTD
-$0.42
1Y
-$1.75
PRTA was -16.7% over the past year, -9.3% over six months, -4.6% year to date, +5.9% in the last week.
12 Months vs Market
PRTA
-16.7%
DIA
+10.4%
SPY
+10.5%
QQQ
+9.0%
IWM
+15.8%
Over the past 12 months PRTA returned -16.7% versus DIA (Dow) +10.4%, SPY (S&P 500) +10.5%, QQQ (Nasdaq 100) +9.0% and IWM (Russell 2000) +15.8%.
Volume & Liquidity
1.59× 3-mo avg
Today 741,121
3-mo avg 466.5K
1W
396.2K
1M
503.2K
3M
466.5K
6M
521.9K
YTD
509.2K
1Y
535.0K
PRTA most recently traded 741,121 shares against a 3-month average daily volume of 466.5K.
More News
Read More
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 8.775
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 11/09/26 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 395.29M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 395M shares outstanding.
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