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Prothena Corporation plc (PRTA)
Prothena Corporation plc stock price live, this page displays NASDAQ PRTA stock exchange data. View the PRTA premarket stock price ahead of the market session or assess the after hours quote. Monitor the latest movements within the Prothena Corporation plc real time stock price chart below.
What Is the Prothena Corporation plc Stock Price Today?
The Prothena Corporation plc stock price today is 9.59.
What Is the Stock Symbol for Prothena Corporation plc?
The stock symbol for Prothena Corporation plc is "PRTA."
What Stock Exchange Does Prothena Corporation plc Trade On?
Prothena Corporation plc is listed and trades on the NASDAQ stock exchange.
Is Prothena Corporation plc a Good Stock to Buy?
Determining whether Prothena Corporation plc—or any stock—is a good buy requires comprehensive analysis. To evaluate its potential, users can sign up to InvestingPro, where they can assess stock price fair value and other essential metrics.
You can find more details by visiting the additional pages to view historical data, charts, latest news, analysis or visit the forum to view opinions on the PRTA quote. (ISIN: IE00B91XRN20)
What Is the Prothena Corporation plc Stock Price Today?
The Prothena Corporation plc stock price today is 9.59.
What Is the Stock Symbol for Prothena Corporation plc?
The stock symbol for Prothena Corporation plc is "PRTA."
What Stock Exchange Does Prothena Corporation plc Trade On?
Prothena Corporation plc is listed and trades on the NASDAQ stock exchange.
Is Prothena Corporation plc a Good Stock to Buy?
Determining whether Prothena Corporation plc—or any stock—is a good buy requires comprehensive analysis. To evaluate its potential, users can sign up to InvestingPro, where they can assess stock price fair value and other essential metrics.
You can find more details by visiting the additional pages to view historical data, charts, latest news, analysis or visit the forum to view opinions on the PRTA quote. (ISIN: IE00B91XRN20)
NASDAQ
Currency in USD
Fair Value
An estimate of a stock's true price based on valuation models like discounted cash flow, peer valuation multiples, and dividend discount models.
Day's Range
9.24
9.64
52 wk Range
4.32
15.63
PRTA is not included in our AI-picked strategies. See which stocks are.
Fair Value
An estimate of a stock's true price based on valuation models like discounted cash flow, peer valuation multiples, and dividend discount models.
Day's Range
9.249.64
52 wk Range
4.3215.63
Key Statistics
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Prev. Close
Open
Volume
Average Volume (3m)
1-Year Change
Book Value / Share
Fair Value
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Shares Outstanding
Revenue
Net Income
EPS
EPS Growth Forecast
UnlockNext Earnings Date
N/A
(N/A)
Dividends Payment Streak
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Return on Assets
Return on Equity
Gross Profit Margin
Price/Book
EBITDA
EV/EBITDA
Beta
Prev. Close
Open
Volume
Average Volume (3m)
1-Year Change
Book Value / Share
Fair Value
UnlockFair Value Upside
UnlockMarket Cap
Shares Outstanding
Revenue
Net Income
EPS
EPS Growth Forecast
UnlockNext Earnings Date
N/A
(N/A)
Dividends Payment Streak
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Return on Assets
Return on Equity
Gross Profit Margin
Price/Book
EBITDA
EV/EBITDA
Beta
PRTA Scorecard
Company’s Health
Assesses a company's financial position by analyzing its market value, financial ratios, industry benchmarks, and competitors.
UnlockFair Value
An estimate of a stock's true price based on valuation models like discounted cash flow, peer valuation multiples, and dividend discount models.
Unlock PriceTechnical Analysis
Strong Buy
Price Target
20.50
Upside
+113.76%
Members' Sentiments
Bearish
Bullish
ProTips
Tips that distill complex financial data into concise, actionable investment insights.
Net income is expected to grow this year
Technical Analysis
Summary
Strong Sell
Sell
Neutral
Buy
Strong Buy
Buy
Technical Indicators
Neutral
Moving Averages
Strong Buy
Prothena Corporation plc Company Profile
Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation. Its product pipeline includes Prasinezumab, an investigational humanized monoclonal antibody which is in Phase 3 clinical trial for the treatment of parkinson’s disease and other synucleinopathies. The company also develops Coramitug, an investigational antibody, which is in Phase 3 clinical trial for the treatment of transthyretin amyloidosis; BMS-986446, an anti-tau antibody which is in Phase 2 clinical trial to treat Alzheimer’s disease; PRX019, an investigational antibody which is in Phase 1 clinical trial for the treatment of neurodegenerative diseases; and PRX123, a Dual Aß-Tau Vaccine, which is in preclinical trial for treating Alzheimer’s disease. In addition, it develops discovery- and late-preclinical-stage programs include TDP-43 CYTOPE for the treatment of amyotrophic lateral sclerosis; PRX012, a next-generation anti-Aß antibody which is in phase 1 clinical trial to treat Alzheimer’s disease; and PRX012-TfR, a preclinical program for the treatment of Alzheimer’s disease. It has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target a-synuclein, including prasinezumab; and master collaboration agreement with Bristol Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. Prothena Corporation plc was incorporated in 2012 and is based in Dublin, Ireland.
Compare PRTA to Peers and Sector
Metrics to compare | PRTA | Sector Sector - Average of metrics from a broad group of related Healthcare sector companies | Relationship RelationshipPRTAPeersSector | |
|---|---|---|---|---|
P/E Ratio | −2.1x | −2.8x | −0.5x | |
PEG Ratio | 0.02 | 0.05 | 0.00 | |
Price/Book | 1.8x | 3.5x | 2.6x | |
Price / LTM Sales | 53.3x | 13.3x | 3.2x | |
Upside (Analyst Target) | 95.6% | 177.8% | 51.4% | |
Fair Value Upside | Unlock | 6.7% | 8.5% | Unlock |
Analyst Ratings
4 Buy
2 Hold
1 Sell
Ratings:
7 analysts
Overall Consensus
Buy
Analysts 12-Month Price Target:
Average 20.50
(+113.76% Upside)
Earnings
Latest Release
Feb 19, 2026
EPS / Forecast
-0.40 / -0.59
Revenue / Forecast
21.00K / 1.39M
People Also Watch
FAQ
What Is the Prothena (PRTA) Stock Price Today?
The Prothena stock price today is 9.59 USD.
What Stock Exchange Does Prothena Trade On?
Prothena is listed and trades on the Nasdaq Stock Exchange.
What Is the Stock Symbol for Prothena?
The stock symbol for Prothena is "PRTA."
What Is the Prothena Market Cap?
As of today, Prothena market cap is 510.87M USD.
What Is Prothena's Earnings Per Share (TTM)?
The Prothena EPS (TTM) is -4.53.
When Is the Next Prothena Earnings Date?
Prothena will release its next earnings report on May 13, 2026.
From a Technical Analysis Perspective, Is PRTA a Buy or Sell?
Based on moving averages and other technical indicators, the daily buy/sell signal is Strong Buy.
How Many Times Has Prothena Stock Split?
Prothena has split 0 times.
How Many Employees Does Prothena Have?
Prothena has 67 employees.
What is the current trading status of Prothena (PRTA)?
As of Mar 06, 2026, Prothena (PRTA) is trading at a price of 9.59 USD, with a previous close of 9.46 USD. The stock has fluctuated within a day range of 9.24 USD to 9.64 USD, while its 52-week range spans from 4.32 USD to 15.63 USD.
What Is Prothena (PRTA) Price Target According to Analysts?
The average 12-month price target for Prothena is 20.50 USD, with a high estimate of 36 USD and a low estimate of 8 USD. 4 analysts recommend buying the stock, while 1 suggest selling, leading to an overall rating of Buy. The stock has an +113.76% Upside potential.
What Is the PRTA Premarket Price?
PRTA's last pre-market stock price is 9.90 USD. The pre-market share volume is 160.00, and the stock has decreased by 0.04, or 0.41%.
What Is the PRTA After Hours Price?
PRTA's last after hours stock price is 9.68 USD, the stock has decreased by 0.09, or 0.94%.
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