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Prothena Corporation plc (PRTA)

US · Healthcare · Biotechnology

$8.35-1.76%
Last close · 2026-10-16

Latest quarter · ended 2026-06-30

Revenue
$1.0M
Revenue YoY
-77.1%
Net profit
$-18.6M
EPS
$-0.32
EPS estimate
$-0.39
Net margin
-1,839.9%

EPS came in at -0.32 against a street estimate of -0.39 — a beat of 17.9%.

Key statistics

Market cap
$453.8M
Forward P/E
10.6
P/B
1.55
Book value
$5.54
EPS (TTM)
$-0.84
52-week high
$11.80
52-week low
$7.73
50-day MA
$8.86
200-day MA
$9.30
Beta
-0.29

Analyst view

Analysts rate Prothena Corporation plc a buy (3 buy, 2 hold, 1 sell out of 6) with an average price target of $21.40.

Shareholding

Insiders
22.35%
Institutions
93.32%

Largest institutional holders

FundStake
FMR Inc14.02%
Rubric Capital Management LP9.74%
BlackRock Inc9.48%
State Street Corp4.66%
Acadian Asset Management LLC3.92%
Vanguard Portfolio Management, LLC3.22%
D. E. Shaw & Co LP3.14%
ADAR1 Capital Management LLC3.03%

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Data updated 2026-10-18.