Omnicom Shares Soar as CMA Clears $13.25B IPG Merger Stock Trades 487th in Volume Amid Industry Consolidation

On August 6, 2025, Omnicom Group (OMC) rose 0.47% with a trading volume of $0.24 billion, ranking 487th in market activity. The stock's performance coincided with regulatory developments regarding its $13.25 billion all-stock acquisition of Interpublic Group (IPG), a landmark merger in the advertising sector.

Britain’s Competition and Markets Authority (CMA) confirmed on August 6 it would not escalate the merger review to a phase 2 probe, clearing the transaction. This decision follows prior approvals from the U.S. Federal Trade Commission and Australia’s Competition and Consumer Commission. The CMA’s clearance removes a final major regulatory hurdle ahead of the expected second-half 2025 closing.

Key conditions include a U.S. requirement that the merged entity avoid steering ad revenue toward or away from publishers based on political content. The approval process, spanning multiple jurisdictions, underscores the deal’s strategic significance as the combined entity would become the world’s largest advertising and marketing agency. Analysts note the regulatory green light reflects confidence in the merger’s competitive impact assessments, though market scrutiny of the combined firm’s influence will persist post-merger.

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