+11.5%
ZSL vs SPY
+2.7%
+8.8%
-37.6%
Performance
Returns, benchmark comparison, and relative performance.
Performance by timeframe
Returns for 3mo.
| Period | Portfolio | SPY | Excess | Alpha |
|---|---|---|---|---|
| 1D | +2.4% | -0.4% | +2.8% | +0.9% |
| 7D | +0.5% | +0.1% | +0.4% | +1.4% |
| 30D | -13.7% | +0.1% | -13.8% | -12.9% |
| 3M | +11.5% | +2.0% | +9.5% | +24.9% |
| All | +11.5% | +2.7% | +8.8% | +24.9% |
Cumulative growth
Daily Returns
Daily percentage return beside SPY.
Daily Out/Under-Performance
Portfolio return minus SPY return. Positive bars indicate outperformance.
Daily Alpha
Portfolio daily return minus β × SPY 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 3mo: compounded portfolio wealth divided by compounded SPY 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…
3mo analysis · Full analysis span regression · Available span rolling