-7.2%
PTC vs BIIB
-19.0%
+11.7%
-48.1%
Performance
Returns, benchmark comparison, and relative performance.
Performance by timeframe
Returns for 2023-09-08 to 2026-09-08.
| Period | Portfolio | BIIB | Excess | Alpha |
|---|---|---|---|---|
| 1D | -5.5% | -3.8% | -1.7% | -4.8% |
| 7D | -12.8% | -1.6% | -11.2% | -12.5% |
| 30D | -9.8% | +2.2% | -12.0% | -10.1% |
| 3M | -2.1% | +10.3% | -12.4% | -3.9% |
| 6M | -18.1% | +14.9% | -33.0% | -20.4% |
| YTD | -23.5% | +20.7% | -44.3% | -26.8% |
| 1Y | -37.4% | +50.3% | -87.7% | -43.1% |
| 3Y | -7.2% | -18.0% | +10.7% | -9.0% |
| All | -7.2% | -19.0% | +11.7% | -9.0% |
Cumulative growth
Daily Returns
Daily percentage return beside BIIB.
Daily Out/Under-Performance
Portfolio return minus BIIB return. Positive bars indicate outperformance.
Daily Alpha
Portfolio daily return minus β × BIIB return. Early observations use the first valid beta; later observations use the trailing beta estimated for each date.
Cumulative Out/Under-Performance
Relative wealth over 2023-09-08 to 2026-09-08: compounded portfolio wealth divided by compounded BIIB wealth, less one. Both series rebase at the selected span's start.
Cumulative Alpha
Compounded beta-adjusted residual returns apply the first valid beta to early observations, then the trailing beta ending on each date.
Updating return analytics…
2023-09-08 to 2026-09-08 analysis · Full analysis span regression · 6 months rolling