The short version

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

  • T-Mobile US is the larger company, worth $161.3B, close to AT&T's $155.6B.
  • T-Mobile US grew revenue faster over the last year (+7.8% vs +2.3%).
  • AT&T keeps more of each dollar of revenue as operating profit (20.1% vs 19.8%).
  • On earnings, AT&T is the cheaper stock (7.4x vs 15.8x).
  • T-Mobile US's price assumes faster free cash flow growth: about -6% a year, against -7% for AT&T (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.

MeasureTTMUS
Market cap$155.6B$161.3B
Share price$22.18$148.58
Revenue (last fiscal year)$125.6B$88.3B
Free cash flow (last fiscal year)$19.4B$18.0B
Revenue growth, last year+2.3%+7.8%
Revenue growth per year, last 5 fiscal years-1.6%+2.5%
Operating margin20.1%19.8%
Net margin16.9%11.4%
Return on equity17.1%18.8%
P/E (trailing)7.37x15.8x
Price / free cash flow8.01x8.96x
EV / EBITDA5.37x10.2x
FCF growth the price implies-7.2%-5.7%
Dividend yield5.1%2.7%
Debt / equity2.39x2.80x
Fundamental gradeCC
Superinvestors holding it66
Insider purchases, last 12 months00

Results from SEC filings

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

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%

T-Mobile US

YearRevenueFree cash flowOp. margin
2021$80.1B$1.6B8.6%
2022$79.6B$2.8B8.2%
2023$78.6B$8.8B18.2%
2024$81.4B$13.5B22.1%
2025$88.3B$18.0B20.7%

Where the revenue comes from

AT&T · by segments, 2025

Communications$120.9B97%
Latin America Business Segment$4.4B3%

T-Mobile US · by products, 2025

Postpaid revenues$57.9B66%
Equipment revenues$16.0B18%
Prepaid revenues$10.5B12%
Wholesale and other service revenues$2.9B3%
Other revenues$1.0B1%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open T in Investingly

Questions

Which is bigger, AT&T or T-Mobile US?

T-Mobile US (TMUS), at $161.3B against $155.6B.

Is T or TMUS cheaper?

By trailing P/E, AT&T (7.37x) is cheaper than T-Mobile US (15.8x). A lower multiple can also mean the market expects less growth.

Which grows faster, T or TMUS?

T-Mobile US: revenue grew +7.8% over the last year, against +2.3%.

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