Arthur J. Gallagher & Co. vs Apollo Global Management
Side-by-side comparison of AI visibility scores, market position, and capabilities
Rolling Meadows IL insurance brokerage (NYSE: AJG) ~$14B combined revenue; $13.45B AssuredPartners acquisition (industry largest), +10,900 employees, 400 offices, third largest global broker competing with Marsh McLennan.
About
Arthur J. Gallagher & Co. is a Rolling Meadows, Illinois-based global insurance brokerage and risk management company — publicly traded on the New York Stock Exchange (NYSE: AJG) as an S&P 500 Financials component — providing commercial property/casualty insurance brokerage, employee benefits consulting, and risk management services to businesses and organizations worldwide through approximately 58,000 employees following the completion of the AssuredPartners acquisition. The defining transaction of 2025 was Arthur J. Gallagher's closing of the $13.45 billion acquisition of AssuredPartners — the largest sale of a US insurance broker to a strategic acquirer in industry history — adding 10,900 employees, approximately $2.9 billion in pro forma revenues, and 400 offices across the United States, United Kingdom, and Ireland, with particular middle-market strength in transportation, energy, healthcare, and government contracting. The AssuredPartners combination accelerates Gallagher's position as the third-largest insurance broker globally (behind Marsh & McLennan and Aon), with combined annual revenues exceeding $14 billion. CEO J. Patrick Gallagher Jr. has led the company's strategy of organic growth supplemented by a relentless acquisition program of regional and specialty insurance brokers — Gallagher has completed 40-50+ acquisitions per year in recent years — building a national and international distribution network that can cross-sell specialty insurance products across AssuredPartners' 400 acquired office locations. Gallagher's Risk Management Services division (claims adjusting and administration for self-insured corporations and government entities) provides a second business line that diversifies revenue from insurance brokerage commission and fee income.
Alternative asset manager with $733B AUM; Athene insurance integration (~$350B liabilities) defines insurance-to-alternatives model; 70% credit AUM makes Apollo world's largest private credit manager.
About
Apollo Global Management is one of the world's largest alternative asset managers, founded in 1990 by Leon Black, Marc Rowan, and Josh Harris in New York City, where it remains headquartered and trades on NYSE (APO). The company managed approximately $733 billion in assets under management as of late 2024 under CEO Marc Rowan, who assumed leadership in 2021 following Leon Black's departure amid controversy over his personal relationship with Jeffrey Epstein. Apollo generated approximately $14.8 billion in total revenues for FY2024, spanning private equity, credit (the dominant segment), and real assets, with the company's defining strategic differentiator being its fully integrated insurance platform through Athene Holding—the fixed annuity and retirement services company Apollo merged into a fully owned subsidiary in 2022 after originally creating Athene in 2009 as a vehicle to deploy insurance liabilities into Apollo-managed alternative credit strategies.
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