CMCSA vs LBTYK: Correlation
How closely do Comcast (CMCSA) and Liberty Global Ltd. - Class C (LBTYK) trade together? Their weekly returns over three years give a correlation of 0.40, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CMCSA and LBTYK?
Across a 3-year window, the weekly returns of CMCSA and LBTYK correlate at 0.40, moderate. Lately the two have moved closer together, with the 1-year correlation at 0.52 versus 0.40 over 3 years. Stretching to 5 years gives 0.47, with an annualized covariance of 280.1 %².
By 3-year correlation, LBTYK places #20 of the 39 assets tracked against CMCSA. Their 12-month results are close: -12.6% for CMCSA against -14.4% for LBTYK.
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 LBTYK: side by side
| CMCSA (Comcast) | LBTYK (Liberty Global Ltd. - Class C) | |
|---|---|---|
| 1-year return | -12.6% | -14.4% |
| 5-year return | -44.5% | -31.3% |
| Volatility (ann.) | 23.8% | 29.7% |
| Beta vs S&P 500 | 0.48 | 0.45 |
| Max drawdown (3Y) | -44.9% | -36.4% |
| Market cap | $93.7B | $3.5B |
| P/E (trailing) | 8.7 | – |
| Dividend yield | 4.85% | 0.00% |
| Sector / category | Communication Services | US Listed |
Year-by-year returns
| Year | CMCSA | LBTYK |
|---|---|---|
| 2022 | -28.7% | -30.8% |
| 2023 | +29.1% | -4.1% |
| 2024 | -11.8% | +34.6% |
| 2025 | -17.3% | -16.0% |
| 2026 | -2.2% | -6.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CMCSA and LBTYK good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.40 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between CMCSA and LBTYK?
The CMCSA/LBTYK correlation stands at 0.40 on a 3-year window (1 year: 0.52, 5 years: 0.47), computed from weekly returns as of 2026-08-27.
Is LBTYK a good diversifier for CMCSA?
Yes, to a useful degree: a correlation of 0.40 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.40 mean?
A reading of 0.40 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/cmcsa-vs-lbtyk.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/cmcsa-vs-lbtyk/)
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Related comparisons
Hubs: CMCSA correlations · LBTYK correlations
