CMCSA vs OMC: Correlation
How closely do Comcast (CMCSA) and Omnicom Group (OMC) trade together? Their weekly returns over three years give a correlation of 0.41, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CMCSA and OMC?
Over the past 3 years, CMCSA and OMC moved with a correlation of 0.41, which is moderate. The relationship has been stable: the 1-year correlation (0.31) sits close to the 3-year figure. Over 5 years the correlation is 0.38, and the annualized covariance of weekly returns is 271.0 %².
Within CMCSA's tracked universe of 39 assets, OMC comes in at #19 by 3-year correlation. The last year tells two different stories: OMC led by 29.1 percentage points, -12.6% for CMCSA against +16.5% for OMC. Across three years, the rolling one-year figure varied moderately, from 0.23 to 0.57.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
CMCSA vs OMC: side by side
| CMCSA (Comcast) | OMC (Omnicom Group) | |
|---|---|---|
| 1-year return | -12.6% | +16.5% |
| 5-year return | -44.5% | +45.6% |
| Volatility (ann.) | 23.8% | 28.0% |
| Beta vs S&P 500 | 0.48 | 0.76 |
| Max drawdown (3Y) | -44.9% | -33.3% |
| Market cap | $93.7B | $24.1B |
| P/E (trailing) | 8.7 | 237.5 |
| Dividend yield | 4.85% | 3.53% |
| Sector / category | Communication Services | Communication Services |
Year-by-year returns
| Year | CMCSA | OMC |
|---|---|---|
| 2022 | -28.7% | +15.7% |
| 2023 | +29.1% | +9.6% |
| 2024 | -11.8% | +2.5% |
| 2025 | -17.3% | -2.6% |
| 2026 | -2.2% | +11.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CMCSA and OMC good diversifiers for each other?
A fair diversifier. At 0.41, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between CMCSA and OMC?
The CMCSA/OMC correlation stands at 0.41 on a 3-year window (1 year: 0.31, 5 years: 0.38), computed from weekly returns as of 2026-08-27.
Is OMC a good diversifier for CMCSA?
A fair diversifier. At 0.41, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.41 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/cmcsa-vs-omc.json
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Related comparisons
Hubs: CMCSA correlations · OMC correlations
