A multistrategy hedge fund founded by Ken Griffin in 1990 and headquartered in Miami. It runs equities, commodities, fixed income and quantitative strategies side by side, and its scale and balance sheet let it absorb large blocks of stock quickly, which is why distressed funds often end up selling to it. Citadel Securities, the market maker, is a separate firm under the same founder.
CEO Ken Griffin · Founded 1990 · HQ Miami, Florida, US · Website citadel.com