Interpublic Group stock reflects the Omnicom merger shift

Published on 09/06/2026 at 16:13 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

Interpublic Group stock now trades against the backdrop of the Omnicom takeover and the latest reported 2025 numbers. The market still has to digest how that deal reshapes the company profile.

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Interpublic Group stock (ISIN US4606901001) is trading in the shadow of the completed Omnicom merger, while the latest reported 2025 figures still define the last full operating picture. Omnicom Group said on September 6, 2026 that Interpublic became a wholly owned subsidiary after the transaction closed.

2025 still sets the frame

For the last reported full year, Omnicom linked to Interpublic-related operations reported revenue of $17.3 billion for 2025, up 10.1 percent year over year, with non-GAAP adjusted diluted EPS of $8.65. The same disclosure put adjusted EBITA at $2.7 billion and the adjusted EBITA margin at 15.6 percent.

That is the comparison point investors now have to use, because the deal has changed how the name is reflected in market and reporting data. On a quarterly basis, Omnicom reported first-quarter 2026 revenue of $6.24 billion, while core operations revenue was $5.62 billion and organic growth was 3.9 percent.

Deal math matters

The most recent second-quarter 2026 update from Omnicom showed revenue of $6.5625 billion, core operations revenue of $6.0 billion and organic growth of 6.1 percent. GAAP diluted EPS was $2.08 and non-GAAP adjusted diluted EPS was $2.65, up 29.3 percent year over year.

For investors, the key point is the scale jump: the reported quarterly revenue moved from $3.69 billion in the March 2026 comparison period to $6.24 billion, and then to $6.5625 billion in the June 2026 quarter. That sequence shows how quickly the combined reporting base has expanded.

Go deeper

Interpublic Group investors after the merger close

The legal and reporting picture now runs through the completed Omnicom transaction and the most recent quarterly figures.

Interpublic Group coverage

Media services at scale

Interpublic was built around advertising, media, public relations and experiential work, and that mix still matters in the post-deal reading of the business. The latest reported figures show how much revenue weight now sits in core operations, with $6.0 billion in that line for the June 2026 quarter.

What the stock now shows

Interpublic Group stock is best read through the latest reported earnings base and the merger-adjusted scale of the combined company. The most recent published quarterly and full-year figures remain the reference points, while the market price is now tied to the completed transaction rather than a standalone operating story.