PRTA

Prothena Corporation plc
NASDAQHEALTHCAREBIOTECHNOLOGY

Key Statistics

Market Cap
$448.14M
P/E Ratio
EPS
$-2.76
Beta
-0.31
52W High
$11.80
52W Low
$6.61
50-Day MA
$9.12
200-Day MA
$9.67
Dividend Yield
Profit Margin
-260.90%
Forward P/E
10.63
PEG Ratio
0.80

About Prothena Corporation plc

Prothena Corporation plc, an advanced stage clinical company, is focused on the discovery and development of new therapies for life-threatening diseases in the United States. The company is headquartered in Dublin, Ireland.

Official WebsiteUSAFY End: December

Fundamentals

Revenue (TTM)$57.94M
Gross Profit (TTM)$-38.73M
EBITDA$-92.33M
Operating Margin50.50%
Return on Equity-40.30%
Return on Assets-13.80%
Revenue/Share (TTM)$1.08
Book Value$5.89
Price-to-Book1.46
Price-to-Sales (TTM)7.73
EV/Revenue2.307
EV/EBITDA-3.58
Quarterly Earnings Growth (YoY)0.00%
Quarterly Revenue Growth (YoY)1706.00%
Shares Outstanding$52.35M
Float$36.68M
% Insiders20.18%
% Institutions90.76%

Historical Volatility

HV 10-Day
31.55%
HV 20-Day
34.88%
HV 30-Day
44.51%
HV 60-Day
53.20%
HV Rank
19.8%

Volatility is currently contracting

Analyst Ratings

Consensus ($21.40 target)
2
Strong Buy
1
Buy
2
Hold
1
Strong Sell

Latest News

SRPT or PRTA: Which Is the Better Value Stock Right Now?

Investors interested in Medical - Biomedical and Genetics stocks are likely familiar with Sarepta Therapeutics (SRPT) and Prothena (PRTA). But which of these two stocks is more attractive to value investors?

Zacks Investment Research6/24/2026Positive
Prothena Announces Leadership Team Updates

DUBLIN--(BUSINESS WIRE)---- $PRTA #Prothena--Prothena promoting Ms. Kingston to Chief Strategy Officer and Mr. Isaacs to General Counsel and Corporate Secretary. Mr. Malecek is departing in June.

Business Wire4/10/2026Neutral

Turn research into an automated options-selling system

Tiblio connects your broker and runs your put-and-call-writing strategy for you — on PRTA and any ticker you trade — then tracks every position and per-strategy win rate.

See how it works

More HEALTHCARE Stocks

Data last updated: 7/29/2026