Omnicom Group's stock soared 5.36% in post-market trading on Thursday, following the release of its fourth-quarter 2025 financial results.

The advertising giant reported revenue of $5.53 billion for the quarter, a 27.9% increase year-over-year that beat analyst estimates, driven primarily by its recent acquisition of Interpublic Group. The company also announced a new $5 billion share repurchase program, including $2.5 billion in accelerated share repurchases.

While adjusted earnings per share of $2.59 slightly missed expectations, investors responded positively to the strong top-line growth and the significant capital return program, which signals confidence in the company's financial position and future prospects.