SLB vs APO Comparison

SLB is the world's premier oilfield-services company as measured by market share. While the industry is largely fragmented, SLB holds the first or second competitive position in many of the differentiated oligopolies in which it operates. Also known as Schlumberger, the company was founded in 1926 by Conrad and Marcel Schlumberger. Today, it's most known as a global industry leader in innovation, while it focuses its strategy on its three growth engines: core, digital, and new energy businesses. Over three-fourths of its revenue base is tied to international markets, while the company boasts nearly $3 billion in digital-related revenue.

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.