-19.5%
GBX vs SPY
+12.4%
-31.9%
-20.7%
Performance
Returns, benchmark comparison, and relative performance.
Performance by timeframe
Returns for 6mo.
| Period | Portfolio | SPY | Excess | Alpha |
|---|---|---|---|---|
| 1D | -0.2% | -0.6% | +0.4% | +0.1% |
| 7D | -0.3% | -2.0% | +1.7% | +0.7% |
| 30D | -7.5% | -1.7% | -5.9% | -6.8% |
| 3M | -8.5% | +4.7% | -13.3% | -10.7% |
| All | -19.5% | +12.4% | -31.9% | -26.8% |
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 6mo: 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…
6mo analysis · Full analysis span regression · 6 months rolling