Biotechnology Stocks I: Compare Returns of S&P 500 to Prothena Corporation plc (PRTA)
Values are based on monthly closes adjusted for splits and dividends from Alpha Vantage.
| Compare Returns for S&P 500 and PRTA | ||
|---|---|---|
| S&P 500 | PRTA | |
| Start Date | Dec-01-2014 | Dec-31-2014 |
| Start Price | $2,727.44 | $20.76 |
| End Date | Dec-01-2024 | Dec-03-2024 |
| End Price | $6,047.16 | $13.78 |
| Number Monthly Prices | 121 | 121 |
| Min Date | Feb-01-2016 | Sep-30-2019 |
| Min Price | $2,503.97 | $7.84 |
| Max Date | Dec-01-2024 | Sep-30-2021 |
| Max Price | $6,047.16 | $71.23 |
| Total Return | 121.72% | -33.62% |
| Annualized Return | 8.22% | -3.98% |
| Current Value of $1,000 Purchase | $2,217 | $664 |
| Number Returns | 7,260 | 7,260 |
| Average Return | 31.84% | 40.09% |
| Minimum Return | -25.54% | -88.89% |
| Maximum Return | 141.50% | 808.55% |
| Number Profitable Returns | 6,531 | 3,320 |
| Percent Profitable Returns | 89.96% | 45.73% |
| Number Unprofitable Returns | 729 | 3,940 |
| Percent Unprofitable Returns | 10.04% | 54.27% |
| Profitable to Unprofitable Returns Ratio | 8.96 | 0.84 |
PRTA Performance Table and Chart
PRTA Dollar-cost Average
PRTA Trendline Chart
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PRTA Stock Return Map - See Patterns of Gains and Losses
PRTA Stock Returns/Purchase Dates