Citadel LLC

Citadel LLC (formerly known as Citadel Investment Group, LLC) is an American multinational hedge fund and financial services company. Founded in 1990 by Kenneth Griffin, it has more than $77 billion in assets under management as of January 2026. The company has over 3,100 employees, with corporate headquarters in Miami, Florida, and offices throughout North America, Asia, and Europe. Founder, CEO and Co-CIO Griffin owns approximately 85% of the firm. As of December 2025, Citadel has posted $90.4 billion in net gains since its inception in 1990, making one of the "most successful hedge funds in history," according to LCH Investments, and CNBC.

Citadel LLC is legally distinct from the market maker Citadel Securities, although both were founded and are owned by Griffin and remain under common ownership structures. In January 2022, Citadel Securities raised $1.15 billion from Sequoia Capital and Paradigm at a valuation of $22 billion, in its first outside investment since its founding.