The short version

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

  • Automatic Data Processing is the larger company, worth $111.3B, close to Datadog's $105.7B.
  • Datadog grew revenue faster over the last year (+35.6% vs +6.8%).
  • Automatic Data Processing keeps more of each dollar of revenue as operating profit (24.2% vs 0.4%).
  • On earnings, Automatic Data Processing is the cheaper stock (26.0x vs 742.7x).

Side by side

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

MeasureADPDDOG
Market cap$111.3B$105.7B
Share price$270.88$293.26
Revenue (last fiscal year)$21.9B$3.4B
Free cash flow (last fiscal year)—$915M
Revenue growth, last year+6.8%+35.6%
Revenue growth per year, last 5 fiscal years+7.4%+35.1%
Operating margin24.2%0.41%
Net margin20.1%4.5%
Return on equity73.2%4.1%
P/E (trailing)26.0x742.7x
Price / free cash flow23.3x105.7x
EV / EBITDA16.5x355.0x
FCF growth the price implies—28.4%
Dividend yield2.4%—
Debt / equity9.48x0.73x
Fundamental gradeCC
Superinvestors holding it54
Insider purchases, last 12 months102

Results from SEC filings

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

Automatic Data Processing

YearRevenueFree cash flowOp. margin
2022$16.5B—22.6%
2023$18.0B—23.6%
2024$19.2B—23.9%
2025$20.6B—24.1%
2026$21.9B—24.2%

Datadog

YearRevenueFree cash flowOp. margin
2021$1.0B$251M-1.9%
2022$1.7B$354M-3.5%
2023$2.1B$598M-1.6%
2024$2.7B$775M2.0%
2025$3.4B$915M-1.3%

Where the revenue comes from

Automatic Data Processing · by segments, 2026

Employer Services$14.8B68%
PEO Services$7.1B32%

Datadog · by regions, 2025

North America$2.4B71%
International$994M29%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open ADP in Investingly

Questions

Which is bigger, Automatic Data Processing or Datadog?

Automatic Data Processing (ADP), at $111.3B against $105.7B.

Is ADP or DDOG cheaper?

By trailing P/E, Automatic Data Processing (26.0x) is cheaper than Datadog (742.7x). A lower multiple can also mean the market expects less growth.

Which grows faster, ADP or DDOG?

Datadog: revenue grew +35.6% over the last year, against +6.8%.

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