Citadel Securities is a leading quantitative trading firm and market maker. Our teams develop and deploy best-in-class research and technology, solving problems that others consider impossible. By utilizing advanced analytics, technology and trading expertise, we provide critical liquidity to central banks, financial institutions, government agencies, corporations, insurers and sovereign wealth funds. 

Finance

Citadel Securities

The New York office specializes in finance and technology, supporting trading, research, and software development teams.

New York

The Chicago office focuses on high-frequency and low-latency trading, research technology, and quantitative analysis.

Chicago

The London office specializes in trading, technology, and quantitative research within the financial markets.

London

This department focuses on monitoring and responding to security incidents, ensuring the protection of organizational assets.

Security Operations

The Quantitative Research and Data Analysis team at Citadel Securities leverages advanced mathematical models, statistical analysis, and cutting-edge technology to develop innovative trading strategies and optimize market-making operations. This multidisciplinary team collaborates closely to analyze vast amounts of financial data, generate insights, and create algorithms that enhance trading performance and maximize liquidity in the markets. Their work directly influences decision-making, risk management, and overall trading efficiency across diverse asset classes.

Quantitative Research and Data Analysis

The Software Engineering team at Citadel Securities is responsible for designing, developing, and maintaining high-performance trading systems, algorithms, and infrastructure that support the firm's quantitative trading operations. They leverage advanced programming skills and innovative technology to ensure low-latency, reliable, and scalable software solutions, while also focusing on site reliability and automation. The team collaborates closely with traders and quantitative researchers to create tools that enhance trading strategies and optimize market-making processes.

Software Engineering

The Trading Operations team at Citadel Securities is responsible for overseeing and executing trades across various asset classes, including equities, options, and fixed income. This team leverages advanced trading strategies, market analysis, and cutting-edge technology to optimize trading performance and ensure efficient execution. Their objective is to maintain liquidity and manage risk effectively while supporting the firm's mission to deliver superior trading services to clients.

Trading Operations

This department focuses on creating, maintaining, and improving software applications and systems.

Software Development

This department focuses on applying statistical and mathematical methods to analyze complex data and inform decision-making.

Quantitative Research

This department focuses on developing and executing trading strategies using quantitative methods and data analysis.

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Other teams

Quantitative Research and Data Analysis

Software Engineering

Trading Operations

Software Development

Quantitative Research

Quantitative Trading