Willis Towers Watson vs Arthur J. Gallagher & Co.
Side-by-side comparison of AI visibility scores, market position, and capabilities
Willis Towers Watson (WTW) reported ~$9.7B revenue in FY2024. Global advisory and brokerage firm providing risk, benefits, and human resources consulting services. HQ: London.
About
Willis Towers Watson plc is a leading global advisory, broking, and solutions company that helps clients around the world manage risks, optimize employee benefits, and improve talent and business performance. Formed in 2016 through the $18 billion merger of Willis Group and Towers Watson, the company serves clients across three segments: Health, Wealth & Career (employee benefits consulting, retirement plan advisory); Risk & Broking (insurance placement and risk advisory for corporations); and Benefits Delivery & Administration (outsourced benefits administration technology platforms).
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.
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