Logo image of PRTA

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

USA - Nasdaq - NASDAQ:PRTA - IE00B91XRN20 - Common Stock

9.19 USD
+0.14 (+1.55%)
Last: 1/9/2026, 8:18:32 PM
9.19 USD
0 (0%)
After Hours: 1/9/2026, 8:18:32 PM

PRTA Key Statistics, Chart & Performance

Key Statistics
Market Cap494.70M
Revenue(TTM)11.79M
Net Income(TTM)-280.46M
Shares53.83M
Float43.39M
52 Week High16.67
52 Week Low4.32
Yearly DividendN/A
Dividend Yield0%
EPS(TTM)-4.61
PEN/A
Fwd PEN/A
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 9.19 USD. In the past month the price decreased by -6.89%. In the past year, price decreased by -29.58%.

PROTHENA CORP PLC / PRTA Daily stock chart

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 INC 23.29 388.96B
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GILD GILEAD SCIENCES INC 14.79 150.25B
VRTX VERTEX PHARMACEUTICALS INC 26.72 117.69B
REGN REGENERON PHARMACEUTICALS 17.7 83.72B
ALNY ALNYLAM PHARMACEUTICALS INC 780.96 52.62B
INSM INSMED INC N/A 37.53B
NTRA NATERA INC N/A 32.34B
BIIB BIOGEN INC 11.21 27.52B
UTHR UNITED THERAPEUTICS CORP 18.31 20.81B
INCY INCYTE CORP 16.65 20.98B
RVMD REVOLUTION MEDICINES INC N/A 22.94B

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.


What is the current price of PRTA stock?

The current stock price of PRTA is 9.19 USD. The price increased by 1.55% in the last trading session.


Does PRTA stock pay dividends?

PRTA does not pay a dividend.


How is the ChartMill rating for PROTHENA CORP PLC?

PRTA has a ChartMill Technical rating of 0 out of 10 and a ChartMill Fundamental rating of 3 out of 10.


Which stock exchange lists PRTA stock?

PRTA stock is listed on the Nasdaq exchange.


How is the market expecting PRTA stock to perform?

13 analysts have analysed PRTA and the average price target is 20.74 USD. This implies a price increase of 125.68% is expected in the next year compared to the current price of 9.19.


Can you provide the number of employees for PROTHENA CORP PLC?

PROTHENA CORP PLC (PRTA) currently has 163 employees.


PRTA Technical Analysis


Chartmill TA Rating
Chartmill Setup Rating

PRTA Fundamental Analysis

ChartMill assigns a fundamental rating of 3 / 10 to PRTA. While PRTA has a great health rating, there are worries on its profitability.


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 -4.61. The EPS decreased by -85.89% compared to the year before.


Industry RankSector Rank
PM (TTM) N/A
ROA -79.53%
ROE -95.07%
Debt/Equity 0
Chartmill High Growth Momentum
EPS Q2Q%38.18%
Sales Q2Q%148.97%
EPS 1Y (TTM)-85.89%
Revenue 1Y (TTM)-91.16%

PRTA Forecast & Estimates

13 analysts have analysed PRTA and the average price target is 20.74 USD. This implies a price increase of 125.68% is expected in the next year compared to the current price of 9.19.

For the next year, analysts expect an EPS growth of -109.62% and a revenue growth -92.13% for PRTA


Analysts
Analysts75.38
Price Target20.74 (125.68%)
EPS Next Y-109.62%
Revenue Next Year-92.13%

PRTA Ownership

Ownership
Inst Owners79.92%
Ins Owners19.38%
Short Float %10.83%
Short Ratio7.17