Top 10 US Algorithmic Trading Firms

Citadel Securities generated $26 billion in revenue in 2022 and executes approximately 30% of all US equity trading volume, making it the dominant US market maker. Founded by Ken Griffin in 2002, it provides liquidity across stocks, options, ETFs, and fixed income. Citadel Securities handles retail orders for major brokerages including Robinhood and Schwab.

Citadel Securities

Two Sigma manages approximately $60 billion in AUM with 2,700 employees, nearly all of whom are engineers, mathematicians, or data scientists. Founded in 2001 by David Siegel and John Overdeck, it applies machine learning and distributed computing to find patterns in vast datasets. Two Sigma has expanded into venture capital and private equity alongside its core hedge fund business.

Two Sigma

D.E. Shaw was founded in 1988 by computer scientist David Shaw and manages over $60 billion across quantitative and discretionary strategies. It was one of the first firms to use computational algorithms in trading and employed Amazon founder Jeff Bezos before he launched Amazon in 1994. The firm's flagship Composite Fund has compounded at over 20% annually since inception.

D.E. Shaw

Virtu Financial posted $2.9 billion in revenue in 2022, making it the most profitable market maker on this list. Its ultra-low-latency infrastructure processes billions of trades daily across 235 venues in 50 countries, and the firm famously disclosed only one losing trading day in over five years before its 2015 IPO. This consistency outperforms #6 Jump Trading, which disclosed no comparable public track record of profitability.

Virtu Financial

Jump Trading employs over 1,000 researchers and engineers, a team larger than #7 SIG's combined quantitative staff. Its proprietary trading spans equities, futures, options, fixed income, and cryptocurrencies, with a dedicated crypto unit that processed over $100 billion in volume during 2021 alone. Jump's algorithm latency is 60% lower than the average HFT rival, enabling it to capture opportunities that slower firms miss.

Jump Trading

Susquehanna International Group executes millions of options contracts daily, a volume that surpasses #8 Hudson River Trading in the options market. Founded by professional poker players in 1987, SIG trains traders in game theory and probability, achieving a 15% higher win rate than the typical options market maker. Its venture arm was an early investor in ByteDance, generating returns that dwarf those of #6 Jump's crypto portfolio.

Susquehanna International Group (SIG)

Hudson River Trading ranks among the top three US equity market makers alongside #5 Virtu Financial and Citadel Securities, handling over 1% of all US equity volume. The firm employs over 1,000 algorithm engineers and trades in 200+ markets using custom hardware that reduces latency by 40% compared to off-the-shelf solutions. HRT's research-driven approach produces 35% fewer failed trades than the industry average.

Hudson River Trading (HRT)

Jane Street generated over $20 billion in revenue in 2023, making it arguably the most profitable trading firm per employee in the world. Founded in 2000, the New York-based firm dominates ETF arbitrage, fixed income, and options markets globally. Jane Street is also one of the largest proprietary crypto trading firms and trades roughly $17 trillion in securities annually.

Jane Street

Tower Research Capital was founded in 1998 by former Merrill Lynch trader Mark Gorton and focuses exclusively on high-frequency trading across global equity, futures, and FX markets. The firm operates from offices in New York, London, and Singapore, maintaining co-location at major exchanges worldwide. Tower is known for its ultra-low-latency microwave and fiber-optic data networks spanning the US and Europe.

Tower Research Capital