$8.44
Today
as of Jul 22, 16:53 ET
Last 30 days
Recent Press Releases & News
PRTA Stock Rises Nearly 11% in Six Months: What's Driving It?
Prothena Corp Public Ltd Insider Bought Shares Worth $465,295, According to a Recent SEC Filing
Prothena Corp Public Ltd Insider Bought Shares Worth $471,300, According to a Recent SEC Filing
Overview
52-week range
$4.76
$12
52% of range
Avg surprise (last 3)
+59.5%
Avg reaction (last 2)
-4.3%
0% positive
Latest IV / EM
96%
EM ±21.9% · $8 · Aug 21
Earnings trends
EPS — actual vs estimate
Actual Estimate
Revenue vs Net Income
Revenue Net income
Earnings history
| Date | Period | Actual EPS | Est | Surprise | YoY %Δ | Day react | Source |
|---|---|---|---|---|---|---|---|
| Thu May 7, 2026 | Mar/2026 | $0.52 | $-0.31 | +267.7% | +146.4% | -5.9% | earnings |
| Tue Sep 30, 2025 | Sep 2025 | $-0.68 | — | — | — | — | financials |
| Mon Aug 4, 2025 | Jun/2025 | $-1.86 | $-1.11 | -67.6% | — | — | earnings |
| Thu May 8, 2025 | Mar/2025 | $-1.12 | $-0.92 | -21.7% | — | -2.6% | earnings |
| Mon Sep 30, 2024 | Sep 2024 | $-1.10 | — | — | — | — | financials |
| Sun Jun 30, 2024 | Jun 2024 | $1.22 | — | — | — | — | financials |
| Sun Mar 31, 2024 | Mar 2024 | $-1.34 | — | — | — | — | financials |
| Sat Sep 30, 2023 | Sep 2023 | $0.38 | — | — | — | — | financials |
| Fri Jun 30, 2023 | Jun 2023 | $-1.03 | — | — | — | — | financials |
Upcoming
| Date | Fiscal | Time | EPS Est | LY EPS | YoY %Δ |
|---|---|---|---|---|---|
| Mon Aug 3, 2026 | Jun/2026 | OTHER | -$0.39 | -$1.86 | +79.0% |
Financials
Income statement (quarterly)
| Metric | Mar 2026 | Dec 2025 | Sep 2025 | Jun 2025 | Mar 2025 | Dec 2024 | Sep 2024 | Jun 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)
| Metric | Mar 2026 | Dec 2025 | Sep 2025 | Jun 2025 | Mar 2025 | Dec 2024 | Sep 2024 | Jun 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 |