+1,362.8%
CMCSA vs SIRI
-18.6%
+1,381.4%
-67.9%
Performance
Returns, benchmark comparison, and relative performance.
Performance by timeframe
Returns for 1990-01-01 to 2026-09-09.
| Period | Portfolio | SIRI | Excess | Alpha |
|---|---|---|---|---|
| 1D | -6.6% | -0.9% | -5.7% | -6.5% |
| 7D | -8.3% | -3.9% | -4.4% | -8.0% |
| 30D | -2.4% | -0.8% | -1.6% | -2.4% |
| 3M | +4.5% | +4.3% | +0.2% | +4.1% |
| 6M | -18.8% | +34.1% | -52.8% | -20.7% |
| YTD | -8.9% | +47.3% | -56.2% | -11.8% |
| 1Y | -18.3% | +22.9% | -41.2% | -19.8% |
| 3Y | -35.0% | -24.6% | -10.4% | -34.7% |
| 5Y | -48.2% | -43.2% | -5.0% | -47.4% |
| 10Y | +4.6% | -12.3% | +16.9% | +2.7% |
| All | +1,362.8% | -18.6% | +1,381.4% | +1,145.7% |
Cumulative growth
Daily Returns
Daily percentage return beside SIRI.
Daily Out/Under-Performance
Portfolio return minus SIRI return. Positive bars indicate outperformance.
Daily Alpha
Portfolio daily return minus β × SIRI 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 1990-01-01 to 2026-09-09: compounded portfolio wealth divided by compounded SIRI 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…
1990-01-01 to 2026-09-09 analysis · Full analysis span regression · 6 months rolling