Prothena Corporation plc - Ordinary Shares (NQ:PRTA)Price and VolumeDetailed Quote
Top NewsMore NewsPerformance
52-Week Range
31.9% below 52-week high
8.030
7.7352W Low
11.8052W High
1 Week
10.7% below 1-week high
7.911W Low
8.991W High
Prothena Corporation plc - Ordinary Shares (PRTA) traded between $7.73 and $11.80 over the past 52 weeks and last traded at $8.03, 31.9% below its 52-week high. Over the past week it ranged between $7.91 and $8.99.
Past 12 Months
1W
-$0.75
1M
-$1.51
3M
-$1.47
6M
-$2.01
YTD
-$1.17
1Y
-$1.83
PRTA was -18.6% over the past year, -20.0% over six months, -12.7% year to date, -8.5% in the last week.
12 Months vs Market
PRTA
DIA
SPY
QQQ
IWM
Over the past 12 months PRTA returned -18.6% versus DIA (Dow) +10.4%, SPY (S&P 500) +16.2%, QQQ (Nasdaq 100) +25.2% and IWM (Russell 2000) +14.4%.
Volume & Liquidity
0.17× 3-mo avg
Today 82,785
3-mo avg 477.2K
1W
1M
3M
6M
YTD
1Y
PRTA most recently traded 82,785 shares against a 3-month average daily volume of 477.2K. More NewsRead 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 QuestionsIs 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 8.030
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 10/06/26 12:19 PM ET
What is the market capitalization of Prothena Corporation plc - Ordinary Shares?
The market capitalization of Prothena Corporation plc - Ordinary Shares is 361.73M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 362M shares outstanding.
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