PROTHENA CORP PLC (PRTA) Stock Price & Overview

NASDAQ:PRTAIE00B91XRN20

Current stock price

9.52 USD
+0.21 (+2.26%)
At close:
9.52 USD
0 (0%)
After Hours:

The current stock price of PRTA is 9.52 USD. Today PRTA is up by 2.26%. In the past month the price increased by 10.19%. In the past year, price decreased by -27.55%.

PRTA Key Statistics

52-Week Range4.32 - 12.705
Current PRTA stock price positioned within its 52-week range.
1-Month Range8.3775 - 10.27
Current PRTA stock price positioned within its 1-month range.
Market Cap
512.462M
P/E
N/A
Fwd P/E
28.09
EPS (TTM)
-3.93
Dividend Yield
N/A

PRTA Stock Performance

Today
+2.26%
1 Week
+11.48%
1 Month
+10.19%
3 Months
-0.21%
Longer-term
6 Months +1.17%
1 Year -27.55%
2 Years -61.57%
3 Years -80.36%
5 Years -62.10%
10 Years -76.87%

PRTA Stock Chart

PROTHENA CORP PLC / PRTA Daily stock chart

PRTA Technical Analysis

ChartMill assigns a technical rating of 3 / 10 to PRTA. When comparing the yearly performance of all stocks, PRTA is a bad performer in the overall market: 79.23% of all stocks are doing better.


Chartmill TA Rating
Chartmill Setup Rating

PRTA Fundamental Analysis

ChartMill assigns a fundamental rating of 4 / 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 Earnings

On February 19, 2026 PRTA reported an EPS of -0.4 and a revenue of 21.00K. The company beat EPS expectations (29.83% surprise) and missed revenue expectations (-98.52% surprise).

Next Earnings DateMay 6, 2026
Last Earnings DateFeb 19, 2026
PeriodQ4 / 2025
EPS Reported-$0.40
Revenue Reported21K
EPS Surprise 29.83%
Revenue Surprise -98.52%

PRTA Forecast & Estimates

13 analysts have analysed PRTA and the average price target is 20.91 USD. This implies a price increase of 119.64% is expected in the next year compared to the current price of 9.52.

For the next year, analysts expect an EPS growth of 108.62% and a revenue growth 939.71% for PRTA


Analysts
Analysts75.38
Price Target20.91 (119.64%)
EPS Next Y108.62%
Revenue Next Year939.71%

PRTA Groups

Sector & Classification

PRTA Financial Highlights

Over the last trailing twelve months PRTA reported a non-GAAP Earnings per Share(EPS) of -3.93. The EPS decreased by -70.87% compared to the year before.


Income Statements
Revenue(TTM)9.68M
Net Income(TTM)-244.09M
Industry RankSector Rank
PM (TTM) N/A
ROA -74.69%
ROE -87.03%
Debt/Equity 0
Chartmill High Growth Momentum
EPS Q2Q%62.96%
Sales Q2Q%-99.01%
EPS 1Y (TTM)-70.87%
Revenue 1Y (TTM)-92.83%

PRTA Ownership

Ownership
Inst Owners88.87%
Shares53.83M
Float43.39M
Ins Owners19.38%
Short Float %15.8%
Short Ratio13.69

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

IPO: 2012-12-21

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 9.52 USD. The price increased by 2.26% 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 3 out of 10 and a ChartMill Fundamental rating of 4 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 20.91 USD. This implies a price increase of 119.64% is expected in the next year compared to the current price of 9.52.


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

PROTHENA CORP PLC (PRTA) currently has 163 employees.