The short version

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

  • AutoZone is the larger company, worth $48.0B, about 5.2 times Aptiv.
  • AutoZone grew revenue faster over the last year (+2.4% vs +2.3%).
  • AutoZone keeps more of each dollar of revenue as operating profit (19.1% vs 5.3%).
  • On earnings, AutoZone is the cheaper stock (20.3x vs 41.3x).
  • AutoZone's price assumes faster free cash flow growth: about 9% a year, against -11% for Aptiv (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.

MeasureAPTVAZO
Market cap$9.3B$48.0B
Share price$43.80$2,939.85
Revenue (last fiscal year)$20.4B$18.9B
Free cash flow (last fiscal year)$1.5B$1.8B
Revenue growth, last year+2.3%+2.4%
Revenue growth per year, last 5 fiscal years+6.9%+6.7%
Operating margin5.3%19.1%
Net margin1.2%13.2%
Return on equity2.5%—
P/E (trailing)41.3x20.3x
Price / free cash flow6.08x26.8x
EV / EBITDA8.61x14.8x
FCF growth the price implies-11.1%8.8%
Dividend yield——
Debt / equity1.06x—
Fundamental gradeDD
Superinvestors holding it66
Insider purchases, last 12 months27

Results from SEC filings

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

Aptiv

YearRevenueFree cash flowOp. margin
2021$15.6B$611M7.6%
2022$17.5B$419M7.2%
2023$20.1B$990M7.8%
2024$19.7B$1.6B9.3%
2025$20.4B$1.5B5.8%

AutoZone

YearRevenueFree cash flowOp. margin
2021$14.6B$2.9B20.1%
2022$16.3B$2.5B20.1%
2023$17.5B$2.1B19.9%
2024$18.5B$1.9B20.5%
2025$18.9B$1.8B19.1%

Where the revenue comes from

Aptiv · by segments, 2025

Electrical Distribution Systems$8.8B43%
Engineered Components Group$5.8B28%
Advanced Safety and User Experience$5.8B28%

AutoZone · by segments, 2024

Auto Parts Stores$18.2B98%
Other$339M2%
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, Aptiv or AutoZone?

AutoZone (AZO), at $48.0B against $9.3B.

Is APTV or AZO cheaper?

By trailing P/E, AutoZone (20.3x) is cheaper than Aptiv (41.3x). A lower multiple can also mean the market expects less growth.

Which grows faster, APTV or AZO?

AutoZone: revenue grew +2.4% 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.