Epsilon
Epsilon is a privately owned company headquartered in the US. A subsidiary of Publicis Groupe, it also operates with its own subsidiaries including Catapult Marketing, CitrusAd, Conversant, and Lotame. Founded in 1969, the company employs approximately 11,130 individuals and reported $1.8B in revenue as of 2024. Functioning as a tier 1 media tech buyer, Epsilon specializes in marketer and agency technology, operating as a global advertising and marketing technology company.

2024 Revenue

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Founded

1969

Headcount

11,125

Headquarters

US

Primary Segment

Marketer and agency technology

Ownership

Privately Owned

Deployments

12

News Summary:

On March 10, 2026, Epsilon launched in-store sales attribution reporting within its Australian retail media platform, enabling retailers and brands to link digital retail media exposure with physical on-shelf sales by connecting online activity with in-store point-of-sale data. Previously, on March 5, the company emphasized its reliance on a proprietary stack of approximately 15 machine learning models embedded in its ad server for real-time buying decisions at the individual level, presenting this system as a long-standing alternative to the large language model trend. This followed the March 3 introduction of Wickes' "Connected Retail Media" network, which Epsilon CoreID powers. The network aims to connect brands with shoppers in the UK home improvement market, monetizing Wickes’ digital inventory and offering advertisers access to audience segments for DIY and trade shoppers.

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Epsilon offers 4 products in the ad tech and services and media and telecoms services industries. Epsilon's product portfolio comprises of search, social, and retail media, marketer and agency technology and RTB and programmatic.
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Epsilon's revenues were over $1B in 2024. Caretta Research has split Epsilon's revenue into 4 different product categories, the largest of which is customer data platforms (CDP). For full access to Epsilon's revenue breakdown subscribe to Caretta Portal.
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Epsilon's customers primarily consist of hospitality, retail Pharmacies and physical retail companies. Examples of Epsilon's customers include Costco Wholesale, Marriott International and Walgreens.

Example Customers

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Example Partners

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