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Prothena Corporation plc

PRTA Health Care Biotechnology: Pharmaceutical Preparations
$8.79
▼ -5.0% Today
as of Jun 7, 07:25 ET
Last 30 days -23.63% Apr 28 → Jun 05
$8.57 $9.36 $10.15 $10.94 $11.73 Apr 28 May 05 May 13 May 20 May 29 Jun 05
Open
$9.25
High
$9.38
Low
$8.63
Volume
$648,635
Avg Vol
$749,374
Mkt Cap
$522M
P/E (TTM)
Beta
52w High
$11.80
52w Low
$4.76
Div Yield
Shares Out
$53M

Overview

52-week range
$4.76
$12
57% of range
Avg surprise (last 2)
+123.0%
Avg reaction (last 2)
-4.3%
0% positive
Latest IV / EM
90%
EM ±12.5% · $9 · Jun 18

Earnings trends

EPS — actual vs estimate Actual Estimate
$-2.34$-1.45$-0.56$0.33$1.22 Actual $-1.03Actual $0.38Actual $-1.34Actual $1.22Actual $-1.10Actual $-1.12Est $-0.92Actual $-2.34Actual $-0.68Actual $0.52Est $-0.31 JunSepMarJunSepMar/2025JunSepMar/2026
Revenue vs Net Income Revenue Net income
$-126M$-77M$-28M$21M$70M Jun 24Sep 24Mar 25Jun 25Sep 25Mar 26

Earnings history

DatePeriodActual EPSEstSurpriseYoY %ΔDay reactSource
Thu May 7, 2026Mar/2026 $0.52 $-0.31 +267.7% +146.4% -5.9% earnings
Tue Sep 30, 2025Sep 2025 $-0.68 financials
Mon Jun 30, 2025Jun 2025 $-2.34 financials
Thu May 8, 2025Mar/2025 $-1.12 $-0.92 -21.7% -2.6% earnings
Mon Sep 30, 2024Sep 2024 $-1.10 financials
Sun Jun 30, 2024Jun 2024 $1.22 financials
Sun Mar 31, 2024Mar 2024 $-1.34 financials
Sat Sep 30, 2023Sep 2023 $0.38 financials
Fri Jun 30, 2023Jun 2023 $-1.03 financials

Financials

Income statement (quarterly)

MetricMar 2026Dec 2025Sep 2025Jun 2025Mar 2025Dec 2024Sep 2024Jun 2024
Revenue
Cost of revenue
Gross profit
Operating income$30M$-40M$-85M$-66M$-67M$58M
Net income$33M$-37M$-126M$-60M$-59M$67M
EPS (diluted)$0.60$-0.68$-2.34$-1.12$-1.10$1.22

Balance sheet (quarterly)

MetricMar 2026Dec 2025Sep 2025Jun 2025Mar 2025Dec 2024Sep 2024Jun 2024
Cash & equivalents$329M$308M$331M$371M$418M$471M$519M$564M
Inventory
Total current assets$339M$315M$340M$385M$436M$485M$535M$586M
Total assets$350M$327M$353M$399M$495M$547M$595M$646M
Long-term debt
Total liabilities$37M$46M$58M$75M$58M$60M$61M$64M
Total equity$313M$280M$295M$324M$438M$487M$534M$582M

Implied volatility — last 90 days

85%87%90%92%95% Jun 07 — IV 90% · EM ±12.5%

Sector peers

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