# MRSH — Marsh & McLennan Companies, Inc. · catalysts, narrative & risks

**Deep-research report — K3vl4r**  
**Symbols:** MRSH  
**Sources:** 25  
**Published:** 2026-09-25  
**Canonical:** https://app.k3vl4r.com/research/deep-research-mrsh-marsh-mclennan-companies-inc-catalysts-narrative-ri-4803

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## Company and ticker clarification

Marsh & McLennan Companies, Inc. is a New York–based professional services firm in risk, insurance, and consulting, founded in 1871 and operating in 130 countries with ~$27 billion in revenue and more than 95,000 colleagues [[13]](https://fortune.com/company/marsh-mclennan/earnings/q2-2026/), [[14]](https://www.stocktitan.net/sec-filings/MMC/10-k-marsh-mclennan-companies-inc-files-annual-report-03b6103cf9f6.html), [[24]](https://finance.yahoo.com/quote/MRSH/). It runs four businesses — Marsh, Guy Carpenter, Mercer, and Oliver Wyman — and reports through two segments: Risk and Insurance Services, and Consulting [[13]](https://fortune.com/company/marsh-mclennan/earnings/q2-2026/), [[24]](https://finance.yahoo.com/quote/MRSH/).

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