Omnicom, the world's third-largest advertising agency to date, has officially completed its acquisition of Interpublic Group (IPG), having received all necessary regulatory approvals and finalized the agreement announced in December 2024. This transaction creates a new advertising and marketing giant, surpassing WPP in revenue and promising to revolutionize the way creativity, data, and technology are combined. Under the terms of the agreement, Interpublic shareholders received 0.344 Omnicom shares for each IPG common share. The new company, which will retain the Omnicom name and trade under the symbol OMC on the New York Stock Exchange, will be 60.6% owned by former Omnicom shareholders and 39.4% by former Interpublic shareholders, on a fully diluted basis. A Giant with Over $25 Billion in Revenue The new Omnicom launches with pro forma combined revenue exceeding $25 billion (approximately €21.6 billion). It will boast a workforce of over 100,000 professionals worldwide and a comprehensive service offering encompassing media and advertising, CRM, digital commerce, public relations, branding, and precision marketing. Beyond the numbers, the new group's strength lies in its Omni platform, an advanced intelligence tool that connects data, creativity, and technology with human talent. This is a key component for what John Wren, Chairman and CEO of the new Omnicom, describes as "smart growth in the next era." "This is a defining moment for our company and our industry," announced Wren. "With the closing of this agreement, Omnicom sets a new standard for modern marketing and sales leadership, building stronger brands, achieving superior business results, and driving sustainable growth. We are excited about this new chapter," he added. Power Sharing: Continuity and New Additions John Wren will continue to lead the new Omnicom as president and CEO, while Phil Angelastro will remain as executive vice president and CFO. Philippe Krakowsky and Daryl Simm will serve as co-presidents and chief operating officers. In addition, Krakowsky, Patrick Moore, and E. Lee Wyatt Jr. will join Omnicom's board of directors. The rest of the leadership team will be announced on December 1. How It Will Affect the Market Both Omnicom and Interpublic are advertising giants. Throughout their history, they have produced some of the most iconic commercials in history, such as L'Oréal's "Because I'm Worth It." Omnicom owns the agencies BBDO, TBWA, FleishmanHillard, and Omnicom Media Group. In the case of Interpublic (or IPG Group), it is a group of companies with a history dating back to the 1930s. It comprises: FCB, IPG, Mediabrands, McCann Worldgroup, and MullenLowe Group. Together, these companies offer public relations, sports marketing, and talent representation services. Both companies have high revenues, with Omnicom's (€13.538 billion) being higher than IPG's (€10.890 billion). With these combined revenues and an adjusted EBITA that the company puts at €3.9 billion, their combined revenue will far surpass that of what was considered the world's largest agency group, WPP, which in 2023 had a total revenue of €17.245 billion. Furthermore, their merger will not only make them the world's largest advertising company but will also give them some of the most coveted clients globally: Apple, L'Oréal, Disney, PepsiCo, and Johnson & Johnson, among others. Facing Technological Evolution by Joining Forces At a time when technology and trends are constantly changing within the advertising sector, their union truly represents strength. It will allow them to become a stronger player in the industry and improve in the areas where they have fallen behind, especially when it comes to implementing artificial intelligence to automate processes. This is a problem that Publicis, one of their direct competitors, has managed to solve as quickly and efficiently as possible, which has made it the highest-rated company in the sector, according to the Wall Street Journal. This has allowed them to acquire clients of the caliber of Pfizer (formerly with Interpublic), Hershey, Lego, and Sky, the entertainment network. For this reason, Interpublic has sold some of its creative and underperforming agencies to invest more in technology. Omnicom, on the other hand, has focused on smaller operations and organically building more technology offerings. However, earlier this year it acquired Flywheel, the eCommerce company, for $835 million, its largest acquisition to date.