Company / Return on Equity (ROE)
PROTHENA CORP PUBLIC LTD CO Return on Equity (ROE) History
FY2016-FY2025 · Annual data · Source: SEC filings
At a glance
Latest annual filing availableLatest Return on Equity (ROE)
-52.4%
FY2025
5-year range
-52.4% / 11.9%
FY2021-FY2025
Trend
-118.2%
vs FY2024
Sector context
Sector data unavailable
Latest sector comparison
What the data says
PROTHENA CORP PUBLIC LTD CO reports negative total equity of -52.4% in FY2025. Negative equity can occur when accumulated losses exceed contributed capital, as reported in the balance sheet from the SEC filing.
Based on SEC 10-K filings.
-52.4% in FY2025 with a 5-year CAGR of +32.2%.
Declined from 11.9% to -52.4% over the past 2 years.
Return on Equity (ROE) over time
Growth rates
- 3-Year Change
- -34.6pp
- 5-Year Change
- +32.2pp
- 10-Year Change
- -
Key checks
Key Insights
- In FY2025, return on equity (roe) decreased 118.2% year-over-year.
- Peak return on equity (roe) was recorded in FY2023.
- Lowest return on equity (roe) in the period was in FY2020.
Company context
Key Data Points
- Low Piotroski F-Score: 2/9 (multiple financial health concerns)
- High earnings quality (cash-backed earnings)
Data sourced from SEC EDGAR filings. Not investment advice.
Annual data
| Year | Return on Equity (ROE)Value | YoY GrowthYoY |
|---|---|---|
| FY2025 | -52.4% | -118.2% |
| FY2024 | -24.0% | -301.3% |
| FY2023 | 11.9% | +166.8% |
| FY2022 | -17.9% | -7.2% |
| FY2021 | -16.7% | +80.3% |
| FY2020 | -84.6% | -50.7% |
| FY2019 | -56.1% | -13.3% |
| FY2018 | -49.6% | -150.4% |
| FY2017 | -19.8% | -910.2% |
| FY2016 | -2.0% | +82.8% |
As of FY2025 · SEC 10-K Annual Filings · Updated Jun 28, 2026