TDG vs APO Comparison

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

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.