Prothena Corporation plc (PRTA)
Company Info
Highlights
$806.05M
-$2.46
0.80
$133.03M
$74.64M
-$89.22M
$11.70 - $31.03
$50.25
26.06%
19.92
Share Price Chart
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Performance
Performance Chart
The chart shows the growth of an initial investment of $10,000 in Prothena Corporation plc, comparing it to the performance of the S&P 500 index or another benchmark. All prices have been adjusted for splits and dividends.
Returns By Period
Prothena Corporation plc had a return of 8.16% year-to-date (YTD) and -45.59% in the last 12 months. Over the past 10 years, Prothena Corporation plc had an annualized return of -5.60%, while the S&P 500 had an annualized return of 11.31%, indicating that Prothena Corporation plc did not perform as well as the benchmark.
PRTA
8.16%
8.79%
-31.79%
-45.59%
4.77%
-5.60%
^GSPC (Benchmark)
4.46%
2.46%
9.31%
23.49%
13.03%
11.31%
Monthly Returns
The table below presents the monthly returns of PRTA, with color gradation from worst to best to easily spot seasonal factors. Returns are adjusted for dividends.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 2.74% | 8.16% | |||||||||||
| 2024 | -21.88% | -2.82% | -10.22% | -17.88% | 2.31% | -0.82% | 12.79% | -4.34% | -24.88% | 1.61% | -4.65% | -14.56% | -61.89% |
| 2023 | -6.14% | -1.40% | -13.07% | 8.56% | 26.24% | 2.78% | 0.86% | -23.30% | -8.65% | -24.44% | -10.64% | 11.54% | -39.68% |
| 2022 | -31.01% | 1.53% | 5.69% | -20.26% | -6.62% | -0.29% | 14.40% | -11.24% | 119.91% | 1.34% | 1.74% | -3.62% | 21.96% |
| 2021 | -6.66% | 99.11% | 12.54% | 5.65% | 9.91% | 76.24% | -2.55% | 33.97% | 6.12% | -22.29% | -9.39% | -1.50% | 311.32% |
| 2020 | -23.12% | -12.41% | 0.38% | 4.86% | -4.99% | -1.88% | 17.02% | 5.88% | -22.92% | 9.21% | 3.76% | 6.10% | -24.13% |
| 2019 | 14.08% | 14.04% | -9.48% | -14.26% | -10.38% | 13.41% | -11.45% | -10.15% | -6.78% | 16.07% | 40.88% | 23.48% | 53.69% |
| 2018 | 11.50% | -19.40% | 8.96% | -67.31% | 12.42% | 8.08% | 1.92% | 2.42% | -14.06% | -5.20% | -3.15% | -14.24% | -72.53% |
| 2017 | -0.47% | 19.79% | -4.88% | -2.98% | -5.76% | 6.10% | 14.12% | -0.52% | 5.42% | -10.38% | -19.91% | -19.36% | -23.79% |
| 2016 | -42.81% | -18.25% | 29.27% | 4.93% | 12.39% | -27.98% | 57.47% | -9.21% | 19.99% | -20.26% | 23.42% | -16.66% | -27.78% |
| 2015 | 9.01% | 17.45% | 43.49% | -15.02% | 21.69% | 33.54% | 25.25% | -12.79% | -21.19% | 13.61% | 36.94% | -3.44% | 228.08% |
| 2014 | 16.67% | 16.39% | 6.39% | -42.57% | -5.36% | 8.31% | -23.02% | 31.91% | -3.23% | -1.04% | 10.53% | -14.36% | -21.72% |
Risk-Adjusted Performance
Risk-Adjusted Performance Rank
The current rank of PRTA is 13, meaning it’s performing worse than 87% of other stocks on our website when it comes to balancing risk and reward. Below is a breakdown of how it compares using common performance measures.
Risk-Adjusted Performance Indicators
The charts below present risk-adjusted performance metrics for Prothena Corporation plc (PRTA) and compare them to a chosen benchmark (^GSPC). These indicators evaluate an investment's returns against its associated risks.
Dividends
Dividend History
Drawdowns
Drawdowns Chart
The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.
Worst Drawdowns
The table below displays the maximum drawdowns of the Prothena Corporation plc. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.
The maximum drawdown for the Prothena Corporation plc was 90.85%, occurring on Aug 23, 2019. Recovery took 516 trading sessions.
The current Prothena Corporation plc drawdown is 81.01%.
Depth | Start | To Bottom | Bottom | To Recover | End | Total |
|---|---|---|---|---|---|---|
| -90.85% | Nov 30, 2015 | 940 | Aug 23, 2019 | 516 | Sep 10, 2021 | 1456 |
| -84.85% | Sep 24, 2021 | 814 | Dec 18, 2024 | — | — | — |
| -64.27% | Mar 21, 2014 | 82 | Jul 17, 2014 | 231 | Jun 17, 2015 | 313 |
| -36.96% | Jul 29, 2015 | 54 | Oct 13, 2015 | 26 | Nov 18, 2015 | 80 |
| -20.33% | Jan 2, 2013 | 12 | Jan 17, 2013 | 55 | Apr 9, 2013 | 67 |
Volatility
Volatility Chart
The current Prothena Corporation plc volatility is 17.81%, representing the average percentage change in the investments's value, either up or down over the past month. The chart below shows the rolling one-month volatility.
Financials
Financial Performance
Historical P/E Ratio Chart
The chart below displays the historical trend of the price-to-earnings (P/E) ratio for Prothena Corporation plc.
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Income Statement
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