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  • COST vs CMCSA✓SelectedUSD · CMCSACOST vs CMCSA performance historyLatest closeAs of+0.26%09/11
Stock and ETF performance explorer

COST vs CMCSA

vs
1w1mo3mo6mo1y3y5y10yallcustom
Portfolio return
-5.6%
CMCSA return
-15.7%
Excess return
+10.1%
Maximum drawdown
-17.4%

Performance

Returns, benchmark comparison, and relative performance.

Performance by timeframe

Returns for 1y.

Portfolio and benchmark returns by period
PeriodPortfolioCMCSAExcessAlpha
1D+0.3%+0.1%+0.1%+0.3%
7D-1.2%-4.9%+3.7%-0.7%
30D-4.7%-1.1%-3.7%-4.6%
3M-7.1%+6.6%-13.7%-7.7%
6M-8.5%-15.5%+6.9%-8.1%
YTD+5.4%-6.7%+12.1%+5.0%
1Y-5.6%-15.6%+10.0%-7.8%
All-5.6%-15.7%+10.1%-7.8%

Cumulative growth

Daily Returns

Daily percentage return beside CMCSA.

Daily Out/Under-Performance

Portfolio return minus CMCSA return. Positive bars indicate outperformance.

Daily Alpha

Portfolio daily return minus β × CMCSA 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 1y: compounded portfolio wealth divided by compounded CMCSA 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…

1y analysis · Full analysis span regression · 6 months rolling