CMCSA vs. ROKU
Compare and contrast key facts about Comcast Corporation (CMCSA) and Roku, Inc. (ROKU).
Performance
CMCSA vs. ROKU - Performance Comparison
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CMCSA vs. ROKU - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
CMCSA Comcast Corporation | 8.44% | -17.35% | -11.84% | 29.08% | -28.68% | -2.22% | 19.13% | 34.04% | -12.71% | 6.34% |
ROKU Roku, Inc. | -12.53% | 45.94% | -18.90% | 125.21% | -82.16% | -31.27% | 147.96% | 337.01% | -40.83% | 120.34% |
Fundamentals
CMCSA:
$101.99B
ROKU:
$14.45B
CMCSA:
$5.34
ROKU:
$0.59
CMCSA:
5.25
ROKU:
161.96
CMCSA:
0.84
ROKU:
3.02
CMCSA:
1.05
ROKU:
5.44
CMCSA:
$123.71B
ROKU:
$4.74B
CMCSA:
$74.31B
ROKU:
$2.07B
CMCSA:
$46.79B
ROKU:
$263.25M
Returns By Period
In the year-to-date period, CMCSA achieves a 8.44% return, which is significantly higher than ROKU's -12.53% return.
CMCSA
- 1D
- -1.16%
- 1M
- -7.93%
- YTD
- 8.44%
- 6M
- 4.76%
- 1Y
- -9.16%
- 3Y*
- -2.27%
- 5Y*
- -7.49%
- 10Y*
- 2.83%
ROKU
- 1D
- 0.30%
- 1M
- -3.25%
- YTD
- -12.53%
- 6M
- -8.37%
- 1Y
- 34.42%
- 3Y*
- 12.97%
- 5Y*
- -22.15%
- 10Y*
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Return for Risk
CMCSA vs. ROKU — Risk / Return Rank
CMCSA
ROKU
CMCSA vs. ROKU - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Comcast Corporation (CMCSA) and Roku, Inc. (ROKU). 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.
| CMCSA | ROKU | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | -0.34 | 0.65 | -1.00 |
Sortino ratioReturn per unit of downside risk | -0.32 | 1.20 | -1.52 |
Omega ratioGain probability vs. loss probability | 0.96 | 1.16 | -0.20 |
Calmar ratioReturn relative to maximum drawdown | -0.37 | 1.25 | -1.62 |
Martin ratioReturn relative to average drawdown | -0.77 | 3.28 | -4.06 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| CMCSA | ROKU | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | -0.34 | 0.65 | -1.00 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.29 | -0.33 | +0.04 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.11 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.22 | 0.24 | -0.02 |
Correlation
The correlation between CMCSA and ROKU is 0.26, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.
Dividends
CMCSA vs. ROKU - Dividend Comparison
CMCSA's dividend yield for the trailing twelve months is around 11.45%, while ROKU has not paid dividends to shareholders.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CMCSA Comcast Corporation | 11.45% | 4.35% | 3.25% | 2.60% | 3.03% | 1.95% | 1.72% | 1.40% | 2.69% | 1.18% | 1.96% | 1.73% |
ROKU Roku, 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% |
Drawdowns
CMCSA vs. ROKU - Drawdown Comparison
The maximum CMCSA drawdown since its inception was -77.16%, smaller than the maximum ROKU drawdown of -91.91%. Use the drawdown chart below to compare losses from any high point for CMCSA and ROKU.
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Drawdown Indicators
| CMCSA | ROKU | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -77.16% | -91.91% | +14.75% |
Max Drawdown (1Y)Largest decline over 1 year | -26.29% | -27.69% | +1.40% |
Max Drawdown (5Y)Largest decline over 5 years | -52.11% | -91.91% | +39.80% |
Max Drawdown (10Y)Largest decline over 10 years | -52.11% | — | — |
Current DrawdownCurrent decline from peak | -40.45% | -80.21% | +39.76% |
Average DrawdownAverage peak-to-trough decline | -31.46% | -52.34% | +20.88% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 12.40% | 10.58% | +1.82% |
Volatility
CMCSA vs. ROKU - Volatility Comparison
The current volatility for Comcast Corporation (CMCSA) is 8.20%, while Roku, Inc. (ROKU) has a volatility of 15.13%. This indicates that CMCSA experiences smaller price fluctuations and is considered to be less risky than ROKU based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| CMCSA | ROKU | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 8.20% | 15.13% | -6.93% |
Volatility (6M)Calculated over the trailing 6-month period | 19.99% | 32.06% | -12.07% |
Volatility (1Y)Calculated over the trailing 1-year period | 26.78% | 52.86% | -26.08% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 26.08% | 67.15% | -41.07% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 25.92% | 73.96% | -48.04% |
Financials
CMCSA vs. ROKU - Financials Comparison
This section allows you to compare key financial metrics between Comcast Corporation and Roku, Inc.. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
CMCSA vs. ROKU - Profitability Comparison
CMCSA - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Comcast Corporation reported a gross profit of 19.58B and revenue of 32.31B. Therefore, the gross margin over that period was 60.6%.
ROKU - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Roku, Inc. reported a gross profit of 606.82M and revenue of 1.39B. Therefore, the gross margin over that period was 43.5%.
CMCSA - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Comcast Corporation reported an operating income of 3.49B and revenue of 32.31B, resulting in an operating margin of 10.8%.
ROKU - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Roku, Inc. reported an operating income of 65.97M and revenue of 1.39B, resulting in an operating margin of 4.7%.
CMCSA - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Comcast Corporation reported a net income of 1.97B and revenue of 32.31B, resulting in a net margin of 6.1%.
ROKU - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Roku, Inc. reported a net income of 80.48M and revenue of 1.39B, resulting in a net margin of 5.8%.