APO vs AMT Comparison

Apollo is one of the world's largest alternative asset managers, with $938.4 billion in total assets under management, or AUM, including $709.1 billion in fee-earning assets, at the end of 2025. The company has two core operating segments: asset management and retirement services. Apollo operates with scale in each of its major product lines—private equity (with $128.4 billion in total AUM and $75.0 billion in fee-earning AUM), real estate/real assets ($60.8 billion/$27.6 billion), and credit ($749.2 billion/$606.5 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.

American Tower owns and operates about 150,000 wireless towers throughout the US, Asia, Latin America, Europe, and Africa. It also owns and/or operates 30 data centers in 11 US markets after acquiring CoreSite. The company's customer base in the tower business is very concentrated, with most revenue in each market generated by the top three or four mobile carriers. The company operates more than 40,000 towers in the US, which accounted for about half of total revenue in 2025. Outside the US, American Tower operates about 47,000 towers in Latin America (dominated by Brazil), 33,000 towers in Europe, and 28,000 towers in Africa. American Tower operates as a REIT.