APO vs TDG 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.

TransDigm manufactures and services a broad set of specialized parts for commercial and military aircraft. The firm organizes itself in three segments: power and control, airframes, and a small non-aviation segment, which serves mostly off-road vehicles and mining equipment. It operates as an acquisitive holding company that focuses on buying up smaller firms that make proprietary aerospace products with substantial aftermarket demand. TransDigm regularly employs financial leverage to amplify its operating results.