Citadel Securities

About Citadel Securities

Citadel Securities is a leading global market maker and liquidity provider operating across equities, options, fixed income, and foreign exchange markets. As one of the largest market makers in the world, the firm executes trades for retail and institutional clients across more than 35 countries, providing continuous two-sided liquidity that improves price discovery and lowers transaction costs. Citadel Securities serves as a Designated Market Maker on the New York Stock Exchange and handles a significant share of US equity volume daily. The firm leverages proprietary quantitative research, advanced technology infrastructure, and high-frequency trading systems to deliver competitive execution quality. Citadel Securities employs quantitative researchers, engineers, and traders who build and deploy sophisticated algorithms across asset classes. The firm is known for its rigorous, data-driven culture and investment in cutting-edge low-latency technology, making it a destination for top talent in quantitative finance and software engineering.

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