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Prothena Corporation plc - Ordinary Shares (NQ:PRTA)

8.790 -0.090 (-1.01%)
Streaming Delayed Price Updated: 10:56 AM EST, Feb 26, 2026 Add to My Watchlist
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Price and Volume

Detailed Quote
Volume 78,347
Open 8.880
Bid (Size) 8.740 (300)
Ask (Size) 8.830 (200)
Prev. Close 8.880
Today's Range 8.650 - 8.955
52wk Range 4.320 - 16.16
Shares Outstanding 45,047,449
Dividend Yield N/A
Chart for (: )
Intraday 1 Week 1 Month 3 Month 1 Year 3 Year 5 Year

Top News

More News
Prothena Corporation (NASDAQ:PRTA) Reports Q4 2025 Revenue Miss, Highlights Pipeline Progress and 2026 Cash Guidance ↗
Via Chartmill
News headline image
Prothena Reports Fourth Quarter and Full Year 2025 Financial Results, and Provides Financial Guidance and Business Highlights
From Prothena Corporation plc
Via Business Wire

Performance

YTD
-4.5%
-4.5%
1 Month
-11.6%
-11.6%
3 Month
-15.7%
-15.7%
6 Month
+2.7%
+2.7%
1 Year
-39.9%
-39.9%

More News

Read More
News headline image
Prothena to Report Fourth Quarter and Full Year 2025 Financial Results on February 19, 2026
From Prothena Corporation plc
Via Business Wire
News headline image
Prothena Announces Board of Directors Update
From Prothena Corporation plc
Via Business Wire
News headline image
Earnings Scheduled For November 6, 2025 ↗
Via Benzinga
News headline image
9 Analysts Assess Prothena Corp: What You Need To Know ↗
Via Benzinga
News headline image
Earnings Scheduled For August 4, 2025 ↗
Via Benzinga
News headline image
Prothena Announces Poster Presentation on its TDP-43 CYTOPE® Program at Neuroscience 2025
From Prothena Corporation plc
Via Business Wire
News headline image
Novo Nordisk's $100 Million Coramitug Shows Promise In Reducing Heart Failure Biomarker ↗
Via Benzinga
News headline image
Prothena Highlights Phase 2 Data for Coramitug (Formerly PRX004) Published in Circulation, Official Journal of AHA
From Prothena Corporation plc
Via Business Wire
News headline image
Prothena Corp PLC (NASDAQ:PRTA) Reports Q3 2025 Earnings and Key Pipeline Milestones ↗
Via Chartmill
News headline image
Prothena Reports Third Quarter 2025 Financial Results and Business Highlights
From Prothena Corporation plc
Via Business Wire
News headline image
Prothena to Report Third Quarter 2025 Financial Results on November 6
From Prothena Corporation plc
Via Business Wire
News headline image
Deep Dive Into Prothena Corp Stock: Analyst Perspectives (7 Ratings) ↗
Via Benzinga
News headline image
Prothena’s Partner Bristol Myers Squibb Obtains Fast Track Designation from the U.S. FDA for BMS-986446 (PRX005), an Anti-MTBR-Tau-Targeting Antibody, for the Treatment of Alzheimer’s Disease
From Prothena Corporation plc
Via Business Wire
News headline image
Alibaba To Rally More Than 12%? Here Are 10 Top Analyst Forecasts For Tuesday ↗
Via Benzinga
News headline image
FDA Tightens Safety Guidelines For Biogen Leqembi Alzheimer's Therapy ↗
Via Benzinga
News headline image
Prothena to Participate in the Cantor Fitzgerald Global Healthcare Conference
From Prothena Corporation plc
Via Business Wire
News headline image
Prothena Reports Non-Competitive Brain Swelling Rates In Early Alzheimer's Study ↗
Via Benzinga
News headline image
What 4 Analyst Ratings Have To Say About Prothena Corp ↗
Via Benzinga
News headline image
Prothena Provides Update on PRX012 and Announces Results from the Phase 1 ASCENT Clinical Program
From Prothena Corporation plc
Via Business Wire
News headline image
Novo Nordisk Commits To Advancing Prothena Corp-Developed Drug Into Late Stage Trial: Retail Turns Hopeful ↗
Via Stocktwits
Topics Earnings
News headline image
Prothena Announces that Novo Nordisk Will Advance Coramitug (Formerly PRX004) into Phase 3 Development for ATTR Amyloidosis with Cardiomyopathy
From Prothena Corporation plc
Via Business Wire
News headline image
Prothena Q2 Revenue Drops 97% ↗
Via The Motley Fool
Topics Intellectual Property
News headline image
Prothena Reports Second Quarter 2025 Financial Results and Business Highlights
From Prothena Corporation plc
Via Business Wire

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 8.790
When was Prothena Corporation plc - Ordinary Shares last traded?
The last trade of Prothena Corporation plc - Ordinary Shares was at 02/26/26 10:56 AM ET
What is the market capitalization of Prothena Corporation plc - Ordinary Shares?
The market capitalization of Prothena Corporation plc - Ordinary Shares is 395.97M
How many shares of Prothena Corporation plc - Ordinary Shares are outstanding?
Prothena Corporation plc - Ordinary Shares has 396M shares outstanding.
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