TotalMarketCap

Market cap

$20.645 B

$75.25 +1.48%

Close of 6 Oct 2026

As of 6 Oct 2026, Omnicom Group (OMC) has a market capitalization of $20.6B. Market cap measures the value of outstanding equity at market prices; company totals combine applicable share classes. Prices and market caps come from Nasdaq, with financial fundamentals from SEC filings. See sources and calculation details.

Revenue

$17.3B

#258 by revenue

Earnings

-$54.5M

Loss-making

Shares outstanding

274,345,967

Latest filing cover page

P/E ratio

—

Cap ÷ net income

Advertising, ranked by market cap

All 26 →
  1. #1Omnicom GroupOMC$20.6B
  2. #2WPPWPP$5.30B
  3. #3StagwellSTGW$2.09B
  4. #4Clear Channel OutdoorCCO$1.22B
  5. #5IbottaIBTA$958.1M

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Where these numbers come from

Share counts and financials for Omnicom Group are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 7 Oct 2026. Read the methodology.