KEY TAKEAWAYS Interpublic Group of Companies shares are surging in premarket trading on a report that Omnicom Group is in advanced talks to acquire its rival in an all-stock deal that would form the world's largest advertising company.

Omnicom to Acquire Interpublic Group in Deal That Will Reshape Advertising Industry

The deal, which is expected to close in the second half of 2025, will create a combined company with over 100,000 employees and revenue of $25.6 billion