CMCSA vs VZ: Correlation
How closely do Comcast (CMCSA) and Verizon (VZ) trade together? Their weekly returns over three years give a correlation of 0.36, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CMCSA and VZ?
Over the past 3 years, CMCSA and VZ moved with a correlation of 0.36, which is moderate. Lately the two have drifted apart, with the 1-year correlation at 0.24 versus 0.36 over 3 years. Over 5 years the correlation is 0.38, and the annualized covariance of weekly returns is 194.7 %².
By 3-year correlation, VZ places #23 of the 39 assets tracked against CMCSA. Correlation aside, the last 12 months split them widely, with VZ ahead by 31.9 points (-12.6% versus +19.3%). On a rolling one-year basis the correlation drifted between 0.24 and 0.67, a moderate band.
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 VZ: side by side
| CMCSA (Comcast) | VZ (Verizon) | |
|---|---|---|
| 1-year return | -12.6% | +19.3% |
| 5-year return | -44.5% | +23.8% |
| Volatility (ann.) | 23.8% | 22.9% |
| Beta vs S&P 500 | 0.48 | 0.15 |
| Max drawdown (3Y) | -44.9% | -17.0% |
| Market cap | $93.7B | $205.4B |
| P/E (trailing) | 8.7 | 12.9 |
| Dividend yield | 4.85% | 5.57% |
| Sector / category | Communication Services | Communication Services |
Year-by-year returns
| Year | CMCSA | VZ |
|---|---|---|
| 2022 | -28.7% | -20.0% |
| 2023 | +29.1% | +2.7% |
| 2024 | -11.8% | +13.1% |
| 2025 | -17.3% | +8.9% |
| 2026 | -2.2% | +27.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CMCSA and VZ good diversifiers for each other?
Reasonably. At 0.36, CMCSA and VZ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between CMCSA and VZ?
The CMCSA/VZ correlation stands at 0.36 on a 3-year window (1 year: 0.24, 5 years: 0.38), computed from weekly returns as of 2026-08-27.
Is VZ a good diversifier for CMCSA?
Reasonably. At 0.36, CMCSA and VZ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.36 mean?
On the −1 to +1 scale, 0.36 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/cmcsa-vs-vz.json
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Related comparisons
Hubs: CMCSA correlations · VZ correlations
