APO vs MCO Comparison

Apollo is one of the world's largest alternative asset managers, with $1.047 trillion in total assets under management, or AUM, including $858.0 billion in fee-earning assets, at the end of June 2026. The company has two core operating segments: asset management and retirement services. Apollo operates with scale in most of its major asset management endeavors—private equity (with an estimated $137.2 billion in total AUM and $76.3 billion in fee-earning AUM), real estate/real assets ($60.8 billion/$27.6 billion), and credit ($849.3 billion/$754.1 billion). Apollo has a distribution profile that is likely not too far off from the industry averages—with 84% of its assets held by institutional investors and 16% by high-net-worth clients.

Moody's, along with S&P Ratings, is a leading provider of credit ratings on fixed-income securities. The ratings segment, Moody's Investors Service, includes corporates, structured finance, financial institutions, and public finance ratings. MIS represents a majority of the firm's profit and often (depending on bond issuance levels) a majority of the firm's revenue. The other segment, Moody's Analytics, consists of decision solutions, research and insights, and data and information.