Moody's Corporation vs Arthur J. Gallagher & Co.
Side-by-side comparison of AI visibility scores, market position, and capabilities
Credit rating and analytics duopolist with $7.1B FY2024 revenue; Berkshire Hathaway ~12% stake; 50%+ MIS operating margins; generative AI tools for credit analysis; RMS catastrophe risk acquisition.
About
Moody's Corporation is a global integrated risk assessment firm and the parent of Moody's Investors Service (MIS), one of the world's two largest credit rating agencies, and Moody's Analytics (MA), a leading provider of financial intelligence and analytical tools, founded in 1909 by John Moody in New York City, where it remains headquartered and trades on NYSE (MCO). The company generated approximately $7.1 billion in revenues for FY2024 under CEO Rob Fauber, with Moody's Investors Service benefiting from elevated debt issuance volumes driven by corporate refinancing activity, CLO formation, and infrastructure financing, while Moody's Analytics delivered high single-digit growth from recurring subscription revenues in its banking, insurance, and corporate risk management software platforms. Berkshire Hathaway owns approximately 12% of Moody's shares, a long-term holding reflecting Warren Buffett's appreciation for the company's near-duopoly pricing power in credit ratings.
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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