Citadel Securities

HQ
Miami, Florida, USA
Total Offices: 3
1,900 Total Employees
Year Founded: 2002
We embrace bold ideas and seize opportunities others don’t, from the way we operate to the strategies we deploy.
Citadel Securities is a technology-driven, next-generation global market maker. We provide institutional and retail investors with world-class liquidity, competitive pricing and seamless front-to-back execution in a broad array of financial products. Our teams of engineers, traders and researchers harness leading-edge quantitative research and the accelerating power of compute, machine learning and AI to power our analytics and tackle the market’s and our clients’ most critical challenges. Together, we are forging the future of capital markets.


Citadel Securities Offices

OnSite Workspace

Employees work from physical offices.

Typical time on-site: None
Company Office
HQMiami, Florida, USA
Company Office
Chicago, Illinois, USA
Company Office
New York, New York, USA
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Articles We're In

Citadel
Olivia McClure Olivia McClure
Published on December 31, 2025

Engineering the Future: Inside Citadel Securities’ Early Adoption of C++26

Technical Fellow Herb Sutter explains how the newest version of C++ is driving efficiency, reliability and resiliency in global trading.

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