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    company

    Citadel Securities

    Citadel Securities LLC is an American market making firm headquartered in Miami, Florida. It provides liquidity and trade execution to retail and institutional clients. It is separate from the hedge fund Citadel LLC, although both were founded and are majority owned by Kenneth C. Griffin.

    citadelsecurities.com
    Chief executive officer
    Peng Zhao

    Key facts

    Founded
    2002, formed as a market makersource
    Headquarters
    Miami, Florida (moved from Chicago in 2022)source
    Chief executive
    Peng Zhao, who joined the company in 2006, has been CEO since 2017source
    Market share
    Involved in one out of every four stock trades in the United States as of 2026source
    Key event
    October 2020: announced it would acquire IMC's NYSE market making unit, making Citadel the largest designated market maker on the NYSEsource

    WYDE coverage of Citadel Securities

    Sources

    Track the institutions that move money.

    Data-driven coverage every Friday.