| OMC Market Cap History Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Below is a table of the OMC market cap history going back to 2/11/2010:
Also see: OMC Shares Outstanding History and OMC YTD Return |
As of 7/22/2026 Omnicom Group has a market cap of 21.78 billion. Investors often follow the OMC market cap history to compare the size of the company over time.
This page shows OMC market capitalization trends over time, with 66 market cap datapoints presented, dating back to 2/11/2010.

| OMC Market Cap History Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Below is a table of the OMC market cap history going back to 2/11/2010:
Also see: OMC Shares Outstanding History and OMC YTD Return |
| OMC Market Cap History Chart | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
OMC Historical Market Cap: +4.22% CAGR
Mouse over chart for data details
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| OMC Stock Price Chart |
| About Omnicom Group, Inc. |
| Omnicom Group Inc. is a marketing and corporate communications company services in advertising, media planning, precision marketing, commerce, branding, CRM, public relations, healthcare marketing and specialty communications. Co.'s services includes database management, digital transformation consulting, package design, crisis communications, data analytics, digital/direct marketing, post-production, interactive and mobile marketing, investor relations, promotional marketing, public affairs, retail media, e-commerce, social media marketing and search engine marketing. Flywheel Digital, Co.'s digital commerce arm, provides e-commerce operations, media execution and market intelligence. We show 66 historical shares outstanding datapoints in our OMC shares outstanding history coverage, used to compute OMC market cap on those dates. Understanding the changing numbers of shares outstanding, the changing share price, and the resulting changing OMC market cap history over the course of time is important for investors interested in comparing OMC's market cap history versus its peers. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies, and then calculating their respective market caps. Comparing the share price of OMC versus a peer is one thing; comparing OMC market cap versus a peer is a completely different story. Furthermore, via fluctuation both in per-share price and in the number of shares outstanding (via issuance of new shares over time, the repurchase of existing shares), the market cap for a company like OMC can fluctuate over the course of history. With this page we aim to empower investors researching OMC by allowing them to research the OMC market cap history. |
| OMC Current Stock Quote |
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| Video: The Importance of Market Cap | |
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| OMC Share Performance |
| Market Cap Peers |
| Omnicom Group (OMC) is categorized under the Services sector; to help you further research historical market cap numbers, below are some other companies in the same sector:
ONDS Market Cap History ONE Market Cap History ONEW Market Cap History OPLN Market Cap History OPTU Market Cap History ORLY Market Cap History OSAT Market Cap History OSTK Market Cap History OSW Market Cap History PAG Market Cap History More Services companies » |
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