CMCSA vs. MRNA

Last updated Jun 13, 2026

CMCSA (Comcast Corporation) and MRNA (Moderna, Inc.) are both stocks. CMCSA operates in Entertainment (Communication Services), while MRNA operates in Biotechnology (Healthcare). Over the past 5 years, CMCSA returned -10.72%/yr vs -25.59%/yr for MRNA. At a 0.19 correlation, their price movements are largely independent.

Performance

CMCSA vs. MRNA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Comcast Corporation (CMCSA) and Moderna, Inc. (MRNA). 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 MRNA's 69.24% return.

CMCSA

• 1D: 2.21%
• 1M: -1.05%
• YTD: -5.28%
• 6M: 3.97%
• 1Y: -17.53%
• 3Y*: -8.98%
• 5Y*: -10.72%
• 10Y*: 1.27%

MRNA

• 1D: 0.54%
• 1M: 1.77%
• YTD: 69.24%
• 6M: 69.42%
• 1Y: 87.14%
• 3Y*: -26.94%
• 5Y*: -25.59%
• 10Y*: —

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

CMCSA vs. MRNA - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
CMCSA Comcast Corporation	-5.28%	-17.35%	-11.84%	29.08%	-28.68%	-2.22%	19.13%	34.04%	-9.61%
MRNA Moderna, Inc.	69.24%	-29.08%	-58.19%	-44.63%	-29.28%	143.11%	434.10%	28.09%	-30.59%

Correlation

The correlation between CMCSA and MRNA is 0.11, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.11
Correlation (3Y) Calculated over the trailing 3-year period	0.18
Correlation (5Y) Calculated over the trailing 5-year period	0.22
Correlation (All Time) Calculated using the full available price history since Dec 7, 2018	0.19

The correlation between CMCSA and MRNA shifts across timeframes, from 0.11 (1 year) to 0.22 (5 years), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap CMCSA : $88.62B MRNA : $19.71B
EPS CMCSA : $5.05 MRNA : -$8.16
PS Ratio CMCSA : 0.72 MRNA : 8.78
PB Ratio CMCSA : 1.00 MRNA : 2.66
Total Revenue (TTM) CMCSA : $125.28B MRNA : $2.23B
Gross Profit (TTM) CMCSA : $77.26B MRNA : -$309.00M
EBITDA (TTM) CMCSA : $45.00B MRNA : -$3.02B

Return for Risk

CMCSA vs. MRNA — 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

MRNA

MRNA Risk / Return Rank: 78
MRNA Sharpe Ratio Rank: 80
MRNA Sortino Ratio Rank: 79
MRNA Omega Ratio Rank: 75
MRNA Calmar Ratio Rank: 79
MRNA Martin Ratio Rank: 76

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. MRNA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Comcast Corporation (CMCSA) and Moderna, Inc. (MRNA). 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	MRNA	Difference
Sharpe ratio: Return per unit of total volatility	-0.62	1.28	-1.90
Sortino ratio: Return per unit of downside risk	-0.71	2.13	-2.84
Omega ratio: Gain probability vs. loss probability	0.90	1.24	-0.34
Calmar ratio: Return relative to maximum drawdown	-0.67	2.34	-3.00
Martin ratio: Return relative to average drawdown	-1.26	4.59	-5.85

CMCSA vs. MRNA - Sharpe Ratio Comparison

The current CMCSA Sharpe Ratio is -0.62, which is lower than the MRNA Sharpe Ratio of 1.28. The chart below compares the historical Sharpe Ratios of CMCSA and MRNA, 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. MRNA - Drawdown Comparison

The maximum CMCSA drawdown since its inception was -67.89%, smaller than the maximum MRNA drawdown of -95.38%. Use the drawdown chart below to compare losses from any high point for CMCSA and MRNA.

Drawdown Indicators

	CMCSA	MRNA	Difference
Max Drawdown Largest peak-to-trough decline	-67.89%	-95.38%	+27.49%
Max Drawdown (1Y) Largest decline over 1 year	-27.34%	-35.51%	+8.17%
Max Drawdown (3Y) Largest decline over 3 years	-39.87%	-86.58%	+46.71%
Max Drawdown (5Y) Largest decline over 5 years	-52.11%	-95.38%	+43.27%
Max Drawdown (10Y) Largest decline over 10 years	-52.11%	—	—
Current Drawdown Current decline from peak	-47.99%	-89.70%	+41.71%
Average Drawdown Average peak-to-trough decline	-24.62%	-57.06%	+32.44%
Ulcer Index Depth and duration of drawdowns from previous peaks	14.38%	18.06%	-3.68%

Volatility

CMCSA vs. MRNA - Volatility Comparison

The current volatility for Comcast Corporation (CMCSA) is 7.12%, while Moderna, Inc. (MRNA) has a volatility of 17.56%. This indicates that CMCSA experiences smaller price fluctuations and is considered to be less risky than MRNA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CMCSA	MRNA	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.12%	17.56%	-10.44%
Volatility (6M) Calculated over the trailing 6-month period	24.86%	48.82%	-23.96%
Volatility (1Y) Calculated over the trailing 1-year period	29.24%	64.75%	-35.51%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.96%	66.49%	-39.53%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	26.49%	72.15%	-45.66%

Dividends

CMCSA vs. MRNA - Dividend Comparison

CMCSA's dividend yield for the trailing twelve months is around 11.84%, while MRNA has not paid dividends to shareholders.

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%
MRNA Moderna, Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Financials

Frequently Asked Questions

Can I hold both CMCSA and MRNA in my portfolio?

CMCSA and MRNA have a correlation of 0.11, 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 MRNA?

MRNA has higher volatility (17.56%) compared to CMCSA (7.12%). In terms of maximum drawdown, CMCSA dropped -67.89% vs MRNA's -95.38%.

Which has better risk-adjusted returns?

MRNA currently has the higher Sharpe Ratio (1.28 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.