-13.0%
CMCSA vs BBY
+41.2%
-54.2%
-29.8%
Performance
Returns, benchmark comparison, and relative performance.
Performance by timeframe
Returns for 6mo.
| Period | Portfolio | BBY | Excess | Alpha |
|---|---|---|---|---|
| 1D | -0.6% | -1.0% | +0.4% | -0.4% |
| 7D | +0.1% | +8.1% | -8.0% | -1.1% |
| 30D | +3.8% | +8.9% | -5.1% | +2.6% |
| 3M | +12.3% | +22.0% | -9.7% | +10.2% |
| All | -13.0% | +41.2% | -54.2% | -16.5% |
Cumulative growth
Daily Returns
Daily percentage return beside BBY.
Daily Out/Under-Performance
Portfolio return minus BBY return. Positive bars indicate outperformance.
Daily Alpha
Portfolio daily return minus β × BBY 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 BBY 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