CMCSA vs. VGT

Last updated Jun 13, 2026

CMCSA (Comcast Corporation) is a stock, while VGT (Vanguard Information Technology ETF) is Technology Equities fund tracking the MSCI USA IMI Information Technology 25/50 Index. Over the past 10 years, CMCSA returned 1.27%/yr vs 25.19%/yr for VGT. At a 0.46 correlation, their price movements are largely independent.

Performance

CMCSA vs. VGT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Comcast Corporation (CMCSA) and Vanguard Information Technology ETF (VGT). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CMCSA achieves a -5.28% return, which is significantly lower than VGT's 24.03% return. Over the past 10 years, CMCSA has underperformed VGT with an annualized return of 1.27%, while VGT has yielded a comparatively higher 25.19% annualized return.

CMCSA

• 1D: 2.21%
• 1M: -2.66%
• YTD: -5.28%
• 6M: 3.97%
• 1Y: -17.53%
• 3Y*: -8.98%
• 5Y*: -10.72%
• 10Y*: 1.27%

VGT

• 1D: 0.58%
• 1M: 1.35%
• YTD: 24.03%
• 6M: 24.13%
• 1Y: 50.48%
• 3Y*: 29.84%
• 5Y*: 20.35%
• 10Y*: 25.19%

*Multi-year figures are annualized to reflect compound growth (CAGR)

CMCSA vs. VGT - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CMCSA Comcast Corporation	-5.28%	-17.35%	-11.84%	29.08%	-28.68%	-2.22%	19.13%	34.04%	-12.71%	17.45%
VGT Vanguard Information Technology ETF	24.03%	21.77%	29.30%	52.66%	-29.70%	30.45%	46.04%	48.62%	2.46%	37.08%

Correlation

The correlation between CMCSA and VGT is -0.09, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.09
Correlation (3Y) Calculated over the trailing 3-year period	0.13
Correlation (5Y) Calculated over the trailing 5-year period	0.31
Correlation (10Y) Calculated over the trailing 10-year period	0.37
Correlation (All Time) Calculated using the full available price history since Jan 30, 2004	0.46

The correlation between CMCSA and VGT shifts across timeframes, from -0.09 (1 year) to 0.46 (all time), reflecting how their relationship changes across market environments.

Return for Risk

CMCSA vs. VGT — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

CMCSA

CMCSA Risk / Return Rank: 16
CMCSA Sharpe Ratio Rank: 16
CMCSA Sortino Ratio Rank: 17
CMCSA Omega Ratio Rank: 16
CMCSA Calmar Ratio Rank: 18
CMCSA Martin Ratio Rank: 14

VGT

VGT Risk / Return Rank: 70
VGT Sharpe Ratio Rank: 79
VGT Sortino Ratio Rank: 71
VGT Omega Ratio Rank: 72
VGT Calmar Ratio Rank: 67
VGT Martin Ratio Rank: 59

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

CMCSA vs. VGT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Comcast Corporation (CMCSA) and Vanguard Information Technology ETF (VGT). 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	VGT	Difference
Sharpe ratio: Return per unit of total volatility	-0.62	2.19	-2.81
Sortino ratio: Return per unit of downside risk	-0.71	2.74	-3.45
Omega ratio: Gain probability vs. loss probability	0.90	1.36	-0.46
Calmar ratio: Return relative to maximum drawdown	-0.67	2.94	-3.61
Martin ratio: Return relative to average drawdown	-1.26	9.11	-10.37

CMCSA vs. VGT - Sharpe Ratio Comparison

The current CMCSA Sharpe Ratio is -0.62, which is lower than the VGT Sharpe Ratio of 2.19. The chart below compares the historical Sharpe Ratios of CMCSA and VGT, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

CMCSA vs. VGT - Drawdown Comparison

The maximum CMCSA drawdown since its inception was -67.89%, which is greater than VGT's maximum drawdown of -54.63%. Use the drawdown chart below to compare losses from any high point for CMCSA and VGT.

Drawdown Indicators

	CMCSA	VGT	Difference
Max Drawdown Largest peak-to-trough decline	-67.89%	-54.63%	-13.26%
Max Drawdown (1Y) Largest decline over 1 year	-27.34%	-16.40%	-10.94%
Max Drawdown (3Y) Largest decline over 3 years	-39.87%	-27.23%	-12.64%
Max Drawdown (5Y) Largest decline over 5 years	-52.11%	-35.07%	-17.04%
Max Drawdown (10Y) Largest decline over 10 years	-52.11%	-35.07%	-17.04%
Current Drawdown Current decline from peak	-47.99%	-7.18%	-40.81%
Average Drawdown Average peak-to-trough decline	-24.62%	-7.95%	-16.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	14.38%	5.28%	+9.10%

Volatility

CMCSA vs. VGT - Volatility Comparison

The current volatility for Comcast Corporation (CMCSA) is 7.12%, while Vanguard Information Technology ETF (VGT) has a volatility of 10.00%. This indicates that CMCSA experiences smaller price fluctuations and is considered to be less risky than VGT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CMCSA	VGT	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.12%	10.00%	-2.88%
Volatility (6M) Calculated over the trailing 6-month period	24.86%	18.00%	+6.86%
Volatility (1Y) Calculated over the trailing 1-year period	29.24%	22.00%	+7.24%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.96%	25.40%	+1.56%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	26.49%	24.72%	+1.77%

Dividends

CMCSA vs. VGT - Dividend Comparison

CMCSA's dividend yield for the trailing twelve months is around 11.84%, more than VGT's 0.33% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CMCSA Comcast Corporation	11.84%	4.35%	3.25%	2.60%	3.03%	1.95%	1.72%	1.40%	2.69%	1.18%	1.96%	1.73%
VGT Vanguard Information Technology ETF	0.33%	0.40%	0.60%	0.65%	0.91%	0.64%	0.82%	1.11%	1.29%	0.99%	1.31%	1.28%

Frequently Asked Questions

Can I hold both CMCSA and VGT in my portfolio?

CMCSA and VGT have a correlation of -0.09, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CMCSA or VGT?

VGT has higher volatility (10.00%) compared to CMCSA (7.12%). In terms of maximum drawdown, CMCSA dropped -67.89% vs VGT's -54.63%.

Which has better risk-adjusted returns?

VGT currently has the higher Sharpe Ratio (2.19 vs -0.62), 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.