-13.0%
CMCSA vs BIDU
-22.2%
+9.1%
-29.8%
Performance
Returns, benchmark comparison, and relative performance.
Performance by timeframe
Returns for 2026-03-08 to 2026-09-08.
| Period | Portfolio | BIDU | Excess | Alpha |
|---|---|---|---|---|
| 1D | -0.6% | -7.0% | +6.4% | -1.1% |
| 7D | +0.1% | -2.4% | +2.5% | 0.0% |
| 30D | +3.8% | -15.6% | +19.5% | +2.8% |
| 3M | +12.3% | -22.3% | +34.6% | +10.0% |
| All | -13.0% | -22.2% | +9.1% | -14.5% |
Cumulative growth
Daily Returns
Daily percentage return beside BIDU.
Daily Out/Under-Performance
Portfolio return minus BIDU return. Positive bars indicate outperformance.
Daily Alpha
Portfolio daily return minus β × BIDU 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 2026-03-08 to 2026-09-08: compounded portfolio wealth divided by compounded BIDU 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…
2026-03-08 to 2026-09-08 analysis · Full analysis span regression · 6 months rolling