Stocks / AOS vs CTAS

AOS vs CTAS: Which Stock Is the Better Buy?

A. O. Smith Corporation and Cintas Corporation side by side — fundamentals from SEC filings, refreshed nightly. Sector: Industrials.

CTAS is the larger company ($81.9B vs $8.2B). On the fundamentals, CTAS grows revenue faster (9.6% vs 5.8%); CTAS earns a higher net margin (17.8% vs 14.3%); AOS trades cheaper on earnings (16.7× vs 41.7×). Neither shows an obvious red flag in the filings. Full numbers below — the stronger figure on each row is in green.

AI verdict — AOS vs CTAS, read from the filings

The stronger business, the cheaper stock, and the risks — synthesised from both companies’ SEC filings, every figure computed not guessed. Not investment advice.

 A. O. Smith Corporation (AOS)Cintas Corporation (CTAS)
Market cap$8.2B$81.9B
Revenue (latest FY)$3.83B$11.26B
Net income (latest FY)$546.20M$2.00B
Revenue growth (5y CAGR)5.8%9.6%
Net margin14.3%17.8%
Return on equity29.4%
P/E ratio16.741.7
Dividend yield2.4%1.0%
Profitable years (of last 10)1010
Positive free cash flowYes

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See the full AOS vs CTAS breakdown

Both companies across 19 years of income statement, balance sheet and cash flow — with ratios, health checks and Ask, the SEC-grounded research assistant. Free, no account needed.

Open AOS's full financials →   Open CTAS's full financials →

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Frequently asked questions

Which is bigger, AOS or CTAS?

Cintas Corporation is larger by market capitalization — $81.9B versus $8.2B.

Which grows faster, AOS or CTAS?

Over the last five fiscal years, Cintas Corporation grew revenue faster — 9.6%/yr versus 5.8%/yr, computed from SEC-filed statements.

Where does this data come from?

All figures are computed from official SEC filings (10-K), refreshed nightly. This is a data comparison, not investment advice.

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AOS fundamentals → · CTAS fundamentals → · All 1,500+ companies → · Free screener →