High Quality Content by WIKIPEDIA articles! Apollo Global Management, LLC is a private equity investment firm, founded in 1990 by former Drexel Burnham Lambert banker Leon Black. The firm specializes in leveraged buyout transactions and purchases of distressed securities involving corporate restructuring, special situations and industry consolidations. Apollo is headquartered in New York City, and also has offices in Purchase, New York, Los Angeles and London. The firm has invested over $16 billion in companies.