Prothena Corporation plc (PRTA) Stock Total Returns
Growth of $10,000 chart
2021-06-03 to 2026-06-03 to
$
%
%
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Investment Performance
Final Value
$3,110
Total Return
-68.90%
CAGR
-20.83%
Dividends
$0.00
Yield on Cost
0.00%
Rolling Returns
1-Month (21 Trading Days)
| Average | -0.69% |
| Median | -3.23% |
| Best | +130.96% |
| Worst | -52.78% |
| % of Windows Positive | 41.0% |
1-Year (252 Trading Days)
| Average | -17.61% |
| Median | -42.35% |
| Best | +219.27% |
| Worst | -78.79% |
| % of Windows Positive | 26.3% |
3-Year (756 Trading Days)
| Average | -73.12% |
| Median | -74.25% |
| Best | -24.41% |
| Worst | -88.00% |
| % of Windows Positive | 0.0% |
Risk Metrics
| Maximum Drawdown | -94.19% |
| Average Drawdown | -57.62% |
| Drawdown Duration | 1176 Trading Days (Unrecovered) |
| Sortino Ratio | 0.08 |
| Calmar Ratio | -0.22 |
| CVaR (5%) | -9.16% |
Yearly Returns
| Year | Percentage | Abs. Return | Dividends | Taxes | Trans. Costs |
|---|---|---|---|---|---|
| 2026 partial | -6.60% (-14.94% ann.) | $659.69 | $0.00 | $0.00 | $0.00 |
| 2025 | -31.05% | $3104.69 | $0.00 | $0.00 | $0.00 |
| 2024 | -61.89% | $6188.77 | $0.00 | $0.00 | $0.00 |
| 2023 | -39.68% | $3968.47 | $0.00 | $0.00 | $0.00 |
| 2022 | +21.96% | +$2196.36 | $0.00 | $0.00 | $0.00 |
| 2021 | +311.32% | +$31132.38 | $0.00 | $0.00 | $0.00 |
| 2020 | -24.13% | $2413.14 | $0.00 | $0.00 | $0.00 |
| 2019 | +53.69% | +$5368.93 | $0.00 | $0.00 | $0.00 |
| 2018 | -72.53% | $7252.60 | $0.00 | $0.00 | $0.00 |
| 2017 | -23.79% | $2378.53 | $0.00 | $0.00 | $0.00 |
| 2016 | -27.78% | $2777.86 | $0.00 | $0.00 | $0.00 |
| 2015 | +228.08% | +$22808.29 | $0.00 | $0.00 | $0.00 |
| 2014 | -21.72% | $2171.95 | $0.00 | $0.00 | $0.00 |
| 2013 | +261.80% | +$26180.06 | $0.00 | $0.00 | $0.00 |
| 2012 partial | +1.81% (+92.25% ann.) | +$180.56 | $0.00 | $0.00 | $0.00 |
Market Regimes
about| Regime | Period | Percentage | Annual | Abs. Return | Dividends | Taxes | Trans. Costs |
|---|---|---|---|---|---|---|---|
| Secular stagnation / QE / low inflation / duration bull partial | December 21, 2012 – February 19, 2020 | +66.39% | +7.37% | +$6638.89 | $0.00 | $0.00 | $0.00 |
| Pandemic shock / liquidity crash | February 20, 2020 – March 23, 2020 | -23.58% | -95.35% | $2357.86 | $0.00 | $0.00 | $0.00 |
| Policy bazooka / monetary euphoria | March 24, 2020 – November 6, 2020 | +31.38% | +55.13% | +$3137.67 | $0.00 | $0.00 | $0.00 |
| Reopening reflation / fiscal boom / supply bottlenecks | November 9, 2020 – November 29, 2021 | +303.77% | +275.88% | +$30377.35 | $0.00 | $0.00 | $0.00 |
| Inflation shock / duration crash / aggressive tightening | November 30, 2021 – November 9, 2022 | +3.79% | +4.03% | +$378.86 | $0.00 | $0.00 | $0.00 |
| Disinflation rebound / AI-led narrow bull / higher-for-longer | November 10, 2022 – September 17, 2024 | -61.59% | -40.32% | $6158.96 | $0.00 | $0.00 | $0.00 |
| Disinflationary easing / resilient growth / AI capex under oil-shock test partial | September 18, 2024 – June 3, 2026 | -58.47% | -40.26% | $5847.30 | $0.00 | $0.00 | $0.00 |
Dividend History
| Date | Per Share | Yield % |
|---|---|---|
| Total | 0 payments |
No dividends recorded.
All calculations use split-adjusted closing prices. Dividends are reinvested on the ex-dividend date at that day's closing price.
For each rolling window, returns are calculated at every possible starting point:
return = (value[i] ÷ value[i − windowSize] − 1) × 100
- Windows
- 1-month = 21 trading days, 1-year = 252 trading days, 3-year = 756 trading days.
- Statistics
- Average: arithmetic mean. Median: middle value when sorted. Best / Worst: max and min. % Positive: share of windows with return > 0.
The series is segmented by calendar year:
return = (endValue ÷ startValue − 1) × 100
startValue is the last value of the prior year (or the first value for the initial year). Partial first/last years are flagged. Dividends, taxes, and transaction costs are scaled proportionally to the initial investment.