Kenneth C. Griffin
Griffin founded Citadel, in 1990. Citadel LLC is an American multinational Hedge fund and financial services company. The company manages the capital of retirement programs, endowment programs and foundations and sovereign wealth funds. Citadel categorizes its areas of operations into distinct segments and groups their subsidiaries into three companies: Citadel the asset manager, Citadel Securities the market maker, and Citadel Technology.