John McNierney

John McNierney is a Senior Designated Market Maker (DMM) on the floor of the New York Stock Exchange (NYSE) for Citadel Securities and serves as one of the Floor Captains. As a Floor Captain, he is responsible for supervising a team of experienced traders in addition to managing the trading and relationships associated with the securities in his panel, including GE, CAT, DAL, UAL, SYF, among others.

Mr. McNierney has worked on the NYSE floor for more than 20 years and has worked in the industry for nearly 30 years. Prior to Citadel Securities, he worked on the NYSE floor for KCG Americas and before that with Bank of America. Mr. McNierney previously traded currencies at UBS and Dai-Ichi Kangyo Bank after starting his career in the Risk Arbitrage department at Asiel & Co.

Mr. McNierney received a bachelor’s degree from Loyola University.

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