The short version

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

  • Mastercard is the larger company, worth $530.2B, about 2.5 times American Express.
  • Mastercard grew revenue faster over the last year (+14.1% vs +10.0%).
  • On earnings, American Express is the cheaper stock (19.5x vs 34.7x).
  • Mastercard's price assumes faster free cash flow growth: about 11% a year, against -0% for American Express (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.

MeasureAXPMA
Market cap$212.9B$530.2B
Share price$308.17$589.14
Revenue (last fiscal year)$72.2B$32.8B
Free cash flow (last fiscal year)$16.0B$17.2B
Revenue growth, last year+10.0%+14.1%
Revenue growth per year, last 5 fiscal years+14.3%+14.8%
Operating margin—58.3%
Net margin15.1%46.3%
Return on equity33.4%289.7%
P/E (trailing)19.5x34.7x
Price / free cash flow13.3x31.4x
EV / EBITDA13.2x24.7x
FCF growth the price implies-0.36%10.7%
Dividend yield1.1%0.53%
Debt / equity7.99x9.28x
Fundamental gradeCC
Superinvestors holding it1819
Insider purchases, last 12 months1010

Results from SEC filings

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

American Express

YearRevenueFree cash flowOp. margin
2021$42.4B$13.1B—
2022$52.9B$19.2B—
2023$60.5B$17.0B—
2024$65.9B$12.1B—
2025$72.2B$16.0B—

Mastercard

YearRevenueFree cash flowOp. margin
2021$18.9B$9.1B53.4%
2022$22.2B$10.8B55.2%
2023$25.1B$11.6B55.8%
2024$28.2B$14.3B55.3%
2025$32.8B$17.2B57.6%

Where the revenue comes from

American Express · by segments, 2025

USCS$34.8B48%
CS$16.9B23%
ICS$13.0B18%
GMNS$7.8B11%

Mastercard · by products, 2025

Payment network$19.5B59%
Value-added services and solutions$13.3B41%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
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Questions

Which is bigger, American Express or Mastercard?

Mastercard (MA), at $530.2B against $212.9B.

Is AXP or MA cheaper?

By trailing P/E, American Express (19.5x) is cheaper than Mastercard (34.7x). A lower multiple can also mean the market expects less growth.

Which grows faster, AXP or MA?

Mastercard: revenue grew +14.1% over the last year, against +10.0%.

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