PRTA Prothena Corporation plc
$8.81▲ +4.88%
Healthcare
Other
After hours
$8.81▲ +0.00%
Oct 27, 4:01 PM ET
Volume 654.3K
Avg Volume (10D) 493.5K
Key Metrics & Fundamentals
Market Cap
$452.28M
P/E Ratio
–
Div Yield
0.00%
52W Range
7.73 - 11.80
% vs 50 MA
0.40%
% vs 200 MA
-4.66%
RSI-14
55.6
MACD Histogram
+0.0400
Beta (1Y vs SPY)
0.88
Free Cash Flow
-$25.70M
Gross Rev
$1.01M
Gross Profit
$1.01M
EBITDA
-$16.08M
COGS
–
Operating Exp
$19.70M
Operating Income
-$18.69M
EBIT
-$18.69M
Pretax Income
-$18.58M
Net Income
-$18.58M
EPS (Diluted)
-0.36
Price & Volume History
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Recent News

How Investors May Respond To Novo Nordisk (CPSE:NOVO B) Obesity Drug Competition
Simply Wall St. · Oct 20, 2026 9:11 PM ET

Prothena's Partnership Strategy: Growth Driver or Limitation?
Zacks · Oct 20, 2026 11:34 AM ET
Prothena Corp Public Ltd Insider Bought Shares Worth $920,049, According to a Recent SEC Filing
MT Newswires · Oct 15, 2026 4:28 PM ET
Prothena Corp Public Ltd Insider Bought Shares Worth $1,821,054, According to a Recent SEC Filing
MT Newswires · Oct 9, 2026 9:49 AM ET

CRMD vs. PRTA: Which Stock Should Value Investors Buy Now?
Zacks · Oct 8, 2026 10:40 AM ET
Prothena Corp Public Ltd Insider Bought Shares Worth $857,240, According to a Recent SEC Filing
MT Newswires · Oct 6, 2026 1:57 PM ET
Prothena Corp Public Ltd Insider Bought Shares Worth $889,872, According to a Recent SEC Filing
MT Newswires · Sep 29, 2026 5:42 PM ET
Prothena Corp Public Ltd Insider Bought Shares Worth $843,460, According to a Recent SEC Filing
MT Newswires · Sep 21, 2026 4:28 PM ET

4 Alzheimer's Drug Stocks to Watch on World Alzheimer's Day
Zacks · Sep 21, 2026 12:40 PM ET

Prothena to Participate in the H.C. Wainwright 28th Annual Global Investment Conference
Business Wire · Sep 9, 2026 4:05 PM ET
Financial Overview - Income Statement
Quarterly
Jun 2026
See PRTA's money flow as a full page
Social Sentiment
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