Logo image of PRTA

PROTHENA CORP PLC (PRTA) Stock Price, Forecast & Analysis

USA - NASDAQ:PRTA - IE00B91XRN20 - Common Stock

10.56 USD
+0.48 (+4.76%)
Last: 11/7/2025, 8:09:37 PM
10.56 USD
0 (0%)
After Hours: 11/7/2025, 8:09:37 PM

PRTA Key Statistics, Chart & Performance

Key Statistics
Market Cap568.44M
Revenue(TTM)135.16M
Net Income(TTM)-302.92M
Shares53.83M
Float43.47M
52 Week High18.6
52 Week Low4.32
Yearly DividendN/A
Dividend YieldN/A
EPS(TTM)-4.6
PEN/A
Fwd PE105.29
Earnings (Next)02-18 2026-02-18/amc
IPO2012-12-21
Sector
GICS SectorHealth Care
GICS IndustryBiotechnology
GICS IndustryGroupPharmaceuticals, Biotechnology & Life Sciences
GICS SubIndustryBiotechnology


PRTA short term performance overview.The bars show the price performance of PRTA in the last week, last 2 weeks, last month, last 3 and 6 months. 1 week 2 week 1 month 3 months 6 months 0 10 20 30 40

PRTA long term performance overview.The bars show the price performance of PRTA in the last 1, 2 and 3 years. 1 year 2 years 3 years -20 -40 -60 -80

The current stock price of PRTA is 10.56 USD. In the past month the price increased by 5.07%. In the past year, price decreased by -40.34%.

PROTHENA CORP PLC / PRTA Daily stock chart

PRTA Latest News, Press Relases and Analysis

PRTA Competitors/Peers

The largest stocks on the US markets in the "Biotechnology" sub-industry
Full List
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TA
FA
PE
Market Cap
ABBV ABBVIE INC23.19387.16B
AMGN AMGEN INC14.64172.38B
GILD GILEAD SCIENCES INC14.51147.46B
VRTX VERTEX PHARMACEUTICALS INC23.59104.98B
REGN REGENERON PHARMACEUTICALS14.6169.69B
ALNY ALNYLAM PHARMACEUTICALS INC868.0458.03B
INSM INSMED INCN/A40.10B
NTRA NATERA INCN/A27.39B
BIIB BIOGEN INC9.2922.80B
INCY INCYTE CORP16.5120.70B
UTHR UNITED THERAPEUTICS CORP17.0120.30B
NBIX NEUROCRINE BIOSCIENCES INC36.4515.11B

About PRTA

Company Profile

PRTA logo image Prothena Corp. Plc is a clinical-stage neuroscience company, which engages in the discovery and development of novel therapies to change the course of devastating diseases. The firm is engaged in protein dysregulation and a pipeline of investigational therapeutics for rare peripheral amyloid diseases. The firm is advancing a pipeline of therapeutic candidates for a range of indications and targets to integrate scientific insights around neurological dysfunction and the biology of misfolded proteins. The Company’s pipeline includes both wholly owned and partnered programs being developed for the potential treatment of diseases, including AL amyloidosis, ATTR amyloidosis, Alzheimer’s disease, Parkinson’s disease and a range of other neurodegenerative diseases. Its clinical programs include birtamimab for the potential treatment of AL amyloidosis, prasinezumab for the potential treatment of Parkinson’s disease, NNC6019/PRX004 for the potential treatment of ATTR amyloidosis, and PRX005 and PRX012 for the potential treatment of Alzheimer’s disease.

Company Info

PROTHENA CORP PLC

77 Sir John Rogerson's Quay, Block C, Grand Canal Docklands

DUBLIN D02 VK60 IE

CEO: Gene G. Kinney

Employees: 163

PRTA Company Website

PRTA Investor Relations

Phone: 35312362500

PROTHENA CORP PLC / PRTA FAQ

What does PROTHENA CORP PLC do?

Prothena Corp. Plc is a clinical-stage neuroscience company, which engages in the discovery and development of novel therapies to change the course of devastating diseases. The firm is engaged in protein dysregulation and a pipeline of investigational therapeutics for rare peripheral amyloid diseases. The firm is advancing a pipeline of therapeutic candidates for a range of indications and targets to integrate scientific insights around neurological dysfunction and the biology of misfolded proteins. The Company’s pipeline includes both wholly owned and partnered programs being developed for the potential treatment of diseases, including AL amyloidosis, ATTR amyloidosis, Alzheimer’s disease, Parkinson’s disease and a range of other neurodegenerative diseases. Its clinical programs include birtamimab for the potential treatment of AL amyloidosis, prasinezumab for the potential treatment of Parkinson’s disease, NNC6019/PRX004 for the potential treatment of ATTR amyloidosis, and PRX005 and PRX012 for the potential treatment of Alzheimer’s disease.


Can you provide the latest stock price for PROTHENA CORP PLC?

The current stock price of PRTA is 10.56 USD. The price increased by 4.76% in the last trading session.


Does PRTA stock pay dividends?

PRTA does not pay a dividend.


What is the ChartMill technical and fundamental rating of PRTA stock?

PRTA has a ChartMill Technical rating of 6 out of 10 and a ChartMill Fundamental rating of 3 out of 10.


What is the analyst forecast for PRTA stock?

13 analysts have analysed PRTA and the average price target is 16.83 USD. This implies a price increase of 59.37% is expected in the next year compared to the current price of 10.56.


What sector and industry does PROTHENA CORP PLC belong to?

PROTHENA CORP PLC (PRTA) operates in the Health Care sector and the Biotechnology industry.


What is PROTHENA CORP PLC worth?

PROTHENA CORP PLC (PRTA) has a market capitalization of 568.44M USD. This makes PRTA a Small Cap stock.


PRTA Technical Analysis

ChartMill assigns a technical rating of 6 / 10 to PRTA. When comparing the yearly performance of all stocks, PRTA is a bad performer in the overall market: 63.02% of all stocks are doing better.


Chartmill TA Rating
Chartmill Setup Rating

PRTA Fundamental Analysis

ChartMill assigns a fundamental rating of 3 / 10 to PRTA. PRTA has a great financial health rating, but its profitability evaluates not so good.


Chartmill FA Analysis
Valuation
Growth
Profitability
Health
Dividend

PRTA Financial Highlights

Over the last trailing twelve months PRTA reported a non-GAAP Earnings per Share(EPS) of -4.6. The EPS decreased by -85.48% compared to the year before.


Industry RankSector Rank
PM (TTM) N/A
ROA -75.91%
ROE -93.4%
Debt/Equity 0
Chartmill High Growth Momentum
EPS Q2Q%39.09%
Sales Q2Q%149.48%
EPS 1Y (TTM)-85.48%
Revenue 1Y (TTM)47.92%

PRTA Forecast & Estimates

13 analysts have analysed PRTA and the average price target is 16.83 USD. This implies a price increase of 59.37% is expected in the next year compared to the current price of 10.56.

For the next year, analysts expect an EPS growth of -105.08% and a revenue growth -85.33% for PRTA


Analysts
Analysts75.38
Price Target16.83 (59.37%)
EPS Next Y-105.08%
Revenue Next Year-85.33%

PRTA Ownership

Ownership
Inst Owners79.74%
Ins Owners19.24%
Short Float %8.87%
Short Ratio4.81