The short version

From the latest prices and each company's SEC filings. Who's ahead on each measure, not which to buy.

  • AT&T is the larger company, worth $155.6B, about 2.1 times Comcast.
  • AT&T grew revenue faster over the last year (+2.3% vs -1.2%).
  • AT&T keeps more of each dollar of revenue as operating profit (20.1% vs 14.7%).
  • On earnings, Comcast is the cheaper stock (4.1x vs 7.4x).
  • AT&T's price assumes faster free cash flow growth: about -7% a year, against -20% for Comcast (reverse DCF).

Side by side

The stronger figure is shaded where higher (or, for valuation multiples, lower) reads as better. How the implied growth works.

MeasureCMCSAT
Market cap$74.3B$155.6B
Share price$20.94$22.18
Revenue (last fiscal year)$123.7B$125.6B
Free cash flow (last fiscal year)$21.9B$19.4B
Revenue growth, last year-1.2%+2.3%
Revenue growth per year, last 5 fiscal years+1.5%-1.6%
Operating margin14.7%20.1%
Net margin9.0%16.9%
Return on equity12.5%17.1%
P/E (trailing)4.08x7.37x
Price / free cash flow3.39x8.01x
EV / EBITDA4.74x5.37x
FCF growth the price implies-20.1%-7.2%
Dividend yield6.2%5.1%
Debt / equity1.87x2.39x
Fundamental gradeCC
Superinvestors holding it186
Insider purchases, last 12 months00

Results from SEC filings

Revenue and free cash flow by fiscal year, from each company's 10-K filings.

Comcast

YearRevenueFree cash flowOp. margin
2021$116.4B$20.0B17.9%
2022$121.4B$15.8B11.6%
2023$121.6B$16.3B19.2%
2024$123.7B$15.5B18.8%
2025$123.7B$21.9B16.7%

AT&T

YearRevenueFree cash flowOp. margin
2021$134.0B$26.4B19.3%
2022$120.7B$16.2B-3.8%
2023$122.4B$20.5B19.2%
2024$122.3B$18.5B15.6%
2025$125.6B$19.4B19.2%

Where the revenue comes from

Comcast · by segments, 2025

Residential Connectivity & Platforms$70.7B55%
Media$27.1B21%
Studios$11.3B9%
Business Services Connectivity$10.2B8%
Theme Parks$9.8B8%

AT&T · by segments, 2025

Communications$120.9B97%
Latin America Business Segment$4.4B3%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open CMCSA in Investingly

Questions

Which is bigger, Comcast or AT&T?

AT&T (T), at $155.6B against $74.3B.

Is CMCSA or T cheaper?

By trailing P/E, Comcast (4.08x) is cheaper than AT&T (7.37x). A lower multiple can also mean the market expects less growth.

Which grows faster, CMCSA or T?

AT&T: revenue grew +2.3% over the last year, against -1.2%.

Prices and ratios as of the last daily update; statements from SEC filings. Information only, not investment advice.