CMCSA vs. VOO
CMCSA (Comcast Corporation) is a stock, while VOO (Vanguard S&P 500 ETF) is S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, CMCSA returned 0.48%/yr vs 15.14%/yr for VOO. Their 0.55 correlation means they have sometimes moved together and sometimes differently.
Performance
CMCSA vs. VOO - Performance Comparison
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Returns By Period
In the year-to-date period, CMCSA achieves a -6.11% return, which is significantly lower than VOO's 10.16% return. Over the past 10 years, CMCSA has underperformed VOO with an annualized return of 0.48%, while VOO has yielded a comparatively higher 15.14% annualized return.
CMCSA
- 1D
- 1.23%
- 1M
- 0.71%
- 6M
- -17.42%
- YTD
- -6.11%
- 1Y
- -12.79%
- 3Y*
- -12.65%
- 5Y*
- -11.56%
- 10Y*
- 0.48%
- ALL TIME*
- 9.78%
VOO
- 1D
- 0.71%
- 1M
- 0.26%
- 6M
- 8.58%
- YTD
- 10.16%
- 1Y
- 21.58%
- 3Y*
- 19.42%
- 5Y*
- 12.83%
- 10Y*
- 15.14%
- ALL TIME*
- 14.78%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
CMCSA Comcast Corporation | $874.68M | $810.14M | $870.96M |
| $3.82B | $3.78B | $5.44B |
CMCSA vs. VOO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
CMCSA Comcast Corporation | -6.11% | -17.35% | -11.84% | 29.08% | -28.68% | -2.22% | 19.13% | 34.04% | -12.71% | 17.45% |
VOO Vanguard S&P 500 ETF | 10.16% | 17.82% | 24.98% | 26.32% | -18.17% | 28.79% | 18.32% | 31.37% | -4.50% | 21.77% |
Correlation
The correlation between CMCSA and VOO is 0.03, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.03 |
Correlation (3Y) Balances recent behavior with more history. | 0.26 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.41 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.48 |
Correlation (All Time) Calculated using the full available price history since Sep 9, 2010 | 0.55 |
Over the past year, the correlation between CMCSA and VOO has dropped to 0.03 - well below their long-term average of 0.55, suggesting their price drivers have been diverging.
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Return for Risk
CMCSA vs. VOO — Risk / Return Rank
CMCSA
VOO
CMCSA vs. VOO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Comcast Corporation (CMCSA) and Vanguard S&P 500 ETF (VOO). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| CMCSA | VOO | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -2.00 | ||
| Sortino ratioReturn per unit of downside risk | -2.60 | ||
| Omega ratioGain probability vs. loss probability | 0.94 | 1.28 | -0.34 |
| Calmar ratioReturn relative to maximum drawdown | -0.48 | 2.21 | -2.69 |
| Martin ratioReturn relative to average drawdown | -0.94 | 9.44 | -10.38 |
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Drawdowns
CMCSA vs. VOO - Drawdown Comparison
The maximum CMCSA drawdown since its inception was -67.89%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for CMCSA and VOO.
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Drawdown Indicators
| CMCSA | VOO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -67.89% | -33.99% | -33.90% |
Max Drawdown (1Y)Largest decline over 1 year | -30.80% | -8.90% | -21.90% |
Max Drawdown (3Y)Largest decline over 3 years | -41.66% | -18.69% | -22.97% |
Max Drawdown (5Y)Largest decline over 5 years | -52.83% | -24.52% | -28.31% |
Max Drawdown (10Y)Largest decline over 10 years | -52.83% | -33.99% | -18.84% |
Current DrawdownCurrent decline from peak | -48.44% | -1.38% | -47.06% |
Average DrawdownAverage peak-to-trough decline | -24.71% | -3.67% | -21.04% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 15.55% | 2.08% | +13.47% |
Volatility
CMCSA vs. VOO - Volatility Comparison
Comcast Corporation (CMCSA) has a higher volatility of 12.24% compared to Vanguard S&P 500 ETF (VOO) at 3.54%. This indicates that CMCSA's price experiences larger fluctuations and is considered to be riskier than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| CMCSA | VOO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 12.24% | 3.54% | +8.70% |
Volatility (6M)Calculated over the trailing 6-month period | 25.68% | 10.10% | +15.58% |
Volatility (1Y)Calculated over the trailing 1-year period | 31.44% | 12.82% | +18.62% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 27.58% | 16.93% | +10.65% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 26.83% | 18.01% | +8.82% |
Dividends
CMCSA vs. VOO - Dividend Comparison
CMCSA's dividend yield for the trailing twelve months is around 12.20%, more than VOO's 1.07% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CMCSA Comcast Corporation | 12.20% | 4.35% | 3.25% | 2.60% | 3.03% | 1.95% | 1.72% | 1.40% | 2.69% | 1.18% | 1.96% | 1.73% |
VOO Vanguard S&P 500 ETF | 1.07% | 1.13% | 1.24% | 1.46% | 1.69% | 1.25% | 1.54% | 1.88% | 2.06% | 1.78% | 2.02% | 2.10% |
Frequently Asked Questions
CMCSA and VOO have a correlation of 0.03, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
CMCSA has higher volatility (12.24%) compared to VOO (3.54%). In terms of maximum drawdown, CMCSA dropped -67.89% vs VOO's -33.99%.
VOO currently has the higher Sharpe Ratio (1.53 vs -0.47), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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