Top 5 Publicly Traded Consulting Firms by Revenue

4. Marsh and McLennan (NYSE:MMC)

Revenue (TTM) as of June 30: $21.59 Billion

Marsh and McLennan (NYSE:MMC) is a US-based global professional services firm. It is a Fortune 500 company and operates four main subsidiaries: Marsh, Guy Carpenter, Mercer and Oliver Wymen. The company’s main services are investment advisory, management consulting and risk management. As of June 30, Marsh and McLennan (NYSE:MMC) has a trailing twelve month revenue of $21.59 billion. 

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