Publicis to buy US digital marketing company Epsilon, which collects vast amounts of consumer data like transactions, location, and web activity, for $3.95B (Angelina Rascouet/Bloomberg)

Angelina Rascouet / Bloomberg:
Publicis to buy US digital marketing company Epsilon, which collects vast amounts of consumer data like transactions, location, and web activity, for $3.95B  —  - Ad group makes biggest purchase yet in consumer-data bet  — Traditional marketing firms are fighting new rivals online

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