PRTA vs SPY
Comparison between Prothena Corporation plc (PRTA, Company) and SPDR S&P 500 ETF Trust (SPY, ETF).
5-Year PerformanceSPY has outperformed PRTA, delivering a return of +13.3% compared to -21.0%
PRTA vs SPY - Performance Comparison
Key Characteristics
Financial metrics and valuation ratios
PRTA vs SPY - Historical Returns
Returns include dividend reinvestment.
PRTA vs SPY - Annual Returns (1999 - 2026)
Returns include dividend reinvestment.
| Year | PRTA | SPY |
|---|---|---|
| 2026 | -4.46% | +8.26% |
| 2025 | -30.14% | +18.00% |
| 2024 | -64.06% | +25.59% |
| 2023 | -32.07% | +26.72% |
| 2022 | +22.41% | -18.64% |
| 2021 | +301.63% | +30.52% |
| 2020 | -23.16% | +17.28% |
| 2019 | +50.76% | +31.09% |
| 2018 | -72.75% | -5.24% |
| 2017 | -24.70% | +20.78% |
| 2016 | -20.94% | +13.59% |
| 2015 | +234.69% | +1.31% |
| 2014 | -26.12% | +14.56% |
| 2013 | +278.86% | +29.00% |
| 2012 | +1.81% | +14.17% |
| 2011 | N/A | +0.85% |
| 2010 | N/A | +13.14% |
| 2009 | N/A | +22.67% |
| 2008 | N/A | -36.25% |
| 2007 | N/A | +5.32% |
| 2006 | N/A | +13.85% |
| 2005 | N/A | +5.32% |
| 2004 | N/A | +10.75% |
| 2003 | N/A | +24.18% |
| 2002 | N/A | -22.42% |
| 2001 | N/A | -10.13% |
| 2000 | N/A | -8.84% |
| 1999 | N/A | +8.61% |
PRTA vs SPY Drawdown Comparison
The maximum drawdown for PRTA was -94.19%, occurring on May 27, 2025. This drawdown has not yet recovered.
The maximum drawdown for SPY was -55.20%, occurring on Mar 9, 2009. Recovery took 1224 trading sessions.
The current PRTA drawdown is -88.86%. The current SPY drawdown is -2.90%.
| Rank | PRTA | SPY |
|---|---|---|
| #1 | -94.19% Sep 23, 2021 - May 27, 2025 | -55.20% Oct 9, 2007 - Aug 16, 2012 |
| #2 | -90.85% Nov 27, 2015 - Sep 10, 2021 | -47.50% Mar 24, 2000 - Oct 26, 2006 |
| #3 | -64.27% Mar 20, 2014 - Jun 17, 2015 | -33.70% Feb 19, 2020 - Aug 10, 2020 |
| #4 | -36.96% Jul 28, 2015 - Nov 18, 2015 | -24.50% Jan 3, 2022 - Dec 13, 2023 |
| #5 | -20.33% Dec 31, 2012 - Apr 9, 2013 | -19.34% Sep 20, 2018 - Apr 12, 2019 |
| #6 | -18.45% Jun 20, 2013 - Jul 12, 2013 | -18.76% Feb 19, 2025 - Jun 26, 2025 |
| #7 | -17.61% Jan 30, 2014 - Feb 25, 2014 | -13.02% Jul 20, 2015 - Apr 18, 2016 |
| #8 | -15.12% Dec 16, 2013 - Jan 29, 2014 | -10.10% Jan 26, 2018 - Aug 6, 2018 |
| #9 | -14.72% Oct 2, 2013 - Oct 25, 2013 | -9.44% Sep 2, 2020 - Nov 11, 2020 |
| #10 | -11.68% May 28, 2013 - Jun 7, 2013 | -9.30% Jan 19, 2000 - Mar 17, 2000 |
| #11 | -10.76% Aug 2, 2013 - Aug 22, 2013 | -9.05% Jul 19, 2007 - Oct 5, 2007 |
| #12 | -10.14% Jun 22, 2015 - Jul 14, 2015 | -8.88% Jan 27, 2026 - Apr 14, 2026 |
| #13 | -7.65% Mar 12, 2014 - Mar 19, 2014 | -8.41% Jul 16, 2024 - Sep 19, 2024 |
| #14 | -6.94% Aug 29, 2013 - Oct 2, 2013 | -7.35% Sep 14, 2012 - Jan 2, 2013 |
| #15 | -6.73% Jul 22, 2015 - Jul 28, 2015 | -7.27% Sep 18, 2014 - Oct 31, 2014 |
Correlation
Correlation between PRTA and SPY is -0.21 which considered as a very weak or no correlation - the stocks move independently of each other.
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