Quant Companies in London 🇬🇧

ACT Group specializes in environmental markets, providing direct access to energy attribute certificates, carbon credits, biomethane certificates, biofuels, biotickets, and energy efficiency instruments for corporate decarbonization. With 16 years of sector expertise and 500-plus specialists across nine global offices, ACT structures compliance and voluntary market solutions tailored to each client's cost, risk, and regulatory requirements. The firm serves industries including transportation, automotive, and data centers, supporting Scope 1, 2, and 3 emissions reductions across LATAM, North America, EMEA, and APAC. ACT combines local policy insight with global market reach, enabling clients to meet sustainability targets and regulatory obligations without compromising commercial performance. Services span EAC procurement strategy, supplier engagement programs, carbon credit portfolio management, and energy efficiency project development.

Akuna Capital is a proprietary trading firm specializing in options market making, providing competitive two-sided quotes across global derivatives markets. Founded in 2011 and headquartered in Chicago, the firm operates offices in Sydney, London, Shanghai, and Singapore. Akuna designs and implements its own low-latency trading technologies, mathematical models, and automated trading strategies, giving it a fully integrated edge across technology and execution. The firm provides liquidity as an options market maker, simultaneously quoting bids and offers to ensure efficient price discovery. Akuna's four core departments — Technology, Trading, Quant, and Operations — collaborate closely to drive data-driven decision-making and continuous innovation. Known for its flat structure and emphasis on individual ownership, Akuna attracts top quantitative and engineering talent. The firm competes in global financial markets with a focus on advanced modeling, automation, and cutting-edge infrastructure.

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.

DRW is a diversified proprietary trading firm headquartered in Chicago, deploying sophisticated quantitative strategies and technology across traditional and cutting-edge markets. Founded in 1992 by Don Wilson, DRW provides liquidity across a broad range of asset classes including equities, fixed income, derivatives, commodities, FX, and cryptocurrency. The firm operates Cumberland, one of the earliest and most established crypto trading desks, active since 2014. DRW also manages DRW Venture Capital for fintech investments, an NX network infrastructure division, and Convexity, a real estate investment arm. With over 30 years of market-making experience, DRW employs quantitative traders, software engineers, and researchers who leverage low-latency technology and data-driven models to improve market efficiency, transparency, and fairness across global exchanges.

Five Rings is a proprietary trading firm headquartered in New York, with offices in London and Amsterdam, specializing in quantitative trading across a diverse range of financial markets. The firm employs integrated teams of quantitative traders, software developers, and researchers who design, build, and execute algorithmic trading strategies — often from concept to deployment within days or weeks. Five Rings trades a wide variety of asset classes including equities, derivatives, fixed income, commodities, and FX, spanning both established and esoteric markets domestically and internationally. The firm operates as a team-first meritocracy, emphasizing constant innovation, rigorous analytical thinking, and strong mentorship. Five Rings recruits heavily from top universities, targeting highly analytical graduates for quantitative trading, software development, and research roles. Its lean organizational structure and fast decision-making cycles allow it to identify and capitalize on market opportunities ahead of competitors.

Flow Traders is a global technology-driven liquidity provider and high-frequency trading market maker specializing in exchange-traded products (ETPs), including ETFs, across equity, fixed income, FX, commodities, and cryptocurrency markets. Founded in Amsterdam in 2004, the firm operates from offices across Europe, the Americas, and Asia, providing continuous two-sided quotes on thousands of financial instruments on exchanges and multilateral trading facilities worldwide. Flow Traders is publicly listed on Euronext Amsterdam and is recognized as one of the world's largest ETF market makers by trading volume. The firm leverages proprietary technology, quantitative research, and algorithmic trading infrastructure to ensure tight spreads and deep liquidity. Flow Traders also operates an institutional trading desk and a digital assets division, reflecting its commitment to expanding into emerging asset classes. Its Strategic Capital arm makes investments in fintech and financial services companies.

Headlands Technologies is a quantitative proprietary trading firm specializing in automated electronic trading strategies across diverse global financial markets. Founded in 2010 and privately funded, the firm designs and implements cutting-edge algorithmic trading systems that operate 24 hours a day across exchanges worldwide. Headlands combines advanced quantitative research with high-performance software engineering, developing low-latency, distributed trading infrastructure built primarily in C++ on Linux systems. The firm employs quantitative researchers and software developers who collaborate to build, optimize, and maintain fully automated trading algorithms. With offices in Chicago, New York, Amsterdam, London, and Singapore, Headlands operates a truly global trading platform spanning multiple asset classes and venues. The firm is distinguished by its flat organizational structure, rigorous engineering culture, and emphasis on novel quantitative research. Headlands does not accept outside investors, operating entirely on proprietary capital.

Hudson River Trading (HRT) is a leading algorithmic trading firm and liquidity provider specializing in high-frequency trading across global electronic markets. Founded by mathematicians, computer scientists, statisticians, physicists, and engineers, HRT develops sophisticated automated trading algorithms that provide competitive pricing and deep liquidity to clients across equities, fixed income, derivatives, ETFs, FX, and commodities. The firm operates across nearly all major electronic exchanges worldwide, spanning 14 offices in six countries. HRT is recognized for its strong engineering culture, where coders lead and build the firm's proprietary trading infrastructure. The company invests heavily in low-latency systems, FPGA technology, and cutting-edge research to maintain competitive advantage in electronic market making. HRT's technology-first approach distinguishes it as one of the most sophisticated quantitative trading firms in the industry.

IMC Trading is a global proprietary trading firm and high-frequency market maker specializing in quantitative research, algorithmic trading, and liquidity provision across major asset classes. Founded in 1989, IMC operates across 10 offices worldwide, trading on more than 120 venues in equities, listed options, ETFs, futures, FX, and crypto. IMC is a top-3 liquidity provider by volume in global listed options and serves as Lead Market Maker in over 150 US ETFs. The firm combines cutting-edge technology infrastructure — including thousands of servers across 9 countries — with petabytes of daily data processing to power its trading strategies. IMC offers institutional clients direct liquidity access through options wholesaling, institutional sales desks, ETF market making, and crypto solutions covering spot, perpetuals, futures, and options. With over 1,900 employees from 70+ nationalities, IMC competes at the frontier of quantitative finance through cross-functional teams in quant research, software engineering, and trading.

Jane Street is a global proprietary trading firm and liquidity provider specializing in quantitative trading across equities, fixed income, derivatives, ETFs, FX, and commodities. Founded in 2000 and headquartered in New York, the firm trades on more than 200 venues across 45 countries, making it one of the world's largest ETF market makers. Jane Street combines deep mathematical research, advanced technology, and systematic trading strategies to navigate complex markets. The firm is a leading user of functional programming languages, particularly OCaml, and invests heavily in machine learning and FPGA-based hardware acceleration. With over 3,000 employees across five global offices, Jane Street operates both a proprietary trading business and a client-facing offering providing institutional liquidity and execution services. Its differentiation lies in rigorous quantitative research, a collaborative culture, and technology-driven edge-case risk management.

Jump Trading is a global proprietary trading firm specializing in quantitative research, algorithmic trading, and high-frequency trading across every major asset class and time horizon. Founded in 1999 and headquartered in Chicago, the firm operates across equities, fixed income, derivatives, FX, commodities, and cryptocurrency markets. Jump Trading develops proprietary trading strategies grounded in rigorous research, advanced machine learning, and custom-built infrastructure spanning from raw silicon and FPGA hardware to order execution systems. With over 1,000 employees across 13 countries and offices in major financial centers including New York, London, Amsterdam, Singapore, Hong Kong, and Shanghai, Jump Trading competes through deep technical expertise and vertically integrated systems. The firm recruits traders, software engineers, and quantitative researchers to solve complex market microstructure and infrastructure problems. Jump Crypto extends the firm's capabilities into digital asset markets.

Optiver is a global proprietary trading firm and leading market maker founded in Amsterdam in 1986. Specializing in options, futures, equities, fixed income, FX, and commodities, Optiver trades thousands of financial instruments on major exchanges worldwide. The firm operates as a principal, deploying its own capital to provide continuous two-sided liquidity across equity, derivatives, and commodity markets, improving price discovery and market stability. Powered entirely by in-house technology, Optiver's trading systems operate at nanosecond speed, supported by quantitative research, advanced pricing models, and sophisticated risk management infrastructure. With close to 2,000 employees across offices in Amsterdam, Chicago, Sydney, Singapore, Hong Kong, Shanghai, London, New York, and other global hubs, Optiver serves as a stabilizing force during periods of market volatility. The firm is widely recognized as one of the oldest and most respected market making organizations in the world.

Tower Research Capital is a leading proprietary trading firm and high-frequency trading market maker operating across global financial markets. Founded in 1998, Tower deploys sophisticated quantitative trading strategies across equities, fixed income, derivatives, FX, commodities, and cryptocurrencies, trading on any time horizon and in any asset class. The firm is organized around autonomous, team-based trading groups sharing a unified high-performance technology infrastructure and research platform. Tower provides liquidity provision services to global markets and also operates a ventures arm investing in emerging financial technology. With offices spanning New York, Amsterdam, Singapore, Gurgaon, Chicago, and other global financial centers, Tower attracts elite quantitative traders, systematic portfolio managers, and software engineers. Its competitive differentiation lies in combining cutting-edge low-latency engineering with an entrepreneurial, results-oriented culture that enables independent trading teams to thrive within a shared institutional framework.

Two Sigma is a quantitative hedge fund and financial sciences company that applies data science, machine learning, and distributed computing to investment management. Founded in 2001 and headquartered in New York, the firm manages over $70 billion in assets under management across systematic investment strategies spanning equities, fixed income, derivatives, and other asset classes. Two Sigma employs approximately 1,700 people, with roughly two-thirds in research and development roles, including over 250 PhDs and 12 Math Olympiad medalists. The firm operates multiple business lines including investment management, securities, real estate, venture capital through Two Sigma Ventures, and Sightway Capital. Its scientific approach encompasses data sourcing and preparation, systematic signal modeling, portfolio construction, and algorithmic trade execution. Two Sigma stores over 380 petabytes of data and draws from more than 10,000 data sources, executing billions of trades since inception. The firm is recognized as a leader in quantitative finance and technology-driven investment research.

Virtu Financial is a leading global high-frequency trading firm and market maker that leverages cutting-edge technology to deliver liquidity across over 25,000 securities at more than 235 venues in 37 countries worldwide. Specializing in execution services, liquidity sourcing, trading analytics, and workflow technology, Virtu provides institutional clients with broker-neutral, multi-dealer platforms and data-as-a-service solutions via its Open Technology Platform. The firm combines deep market structure expertise with proprietary algorithmic trading infrastructure to generate competitive bids and offers across equities, fixed income, ETFs, FX, commodities, and derivatives. Virtu also offers transaction cost analysis, execution management systems, and connectivity products through its ITG acquisition. Publicly traded on Nasdaq under the ticker VIRT, Virtu is recognized for transparency, innovation, and consistent high-quality trade execution in global capital markets.

WEBB Traders is a proprietary trading firm and market maker headquartered in Amsterdam, founded in 2009. The firm acts as a market maker across over one million financial instruments, deploying its own capital on global stock and derivatives exchanges. Specializing in cash equity, derivatives, FX, and arbitrage strategies, WEBB Traders leverages a broad network of interdealer brokers and advanced electronic trading technology to provide liquidity to financial markets. The firm is a member of all major EU exchanges and holds a significant presence in US markets, with access to derivatives markets in Brazil. Regulated by the Dutch AFM and DNB, WEBB Traders operates offices in Amsterdam and Paris, serving a global financial system with a diverse team of over 25 nationalities. The company emphasizes a collaborative, flat-hierarchy culture designed to attract and retain top trading, research, and engineering talent.

XTX Markets is a leading algorithmic trading and electronic market-making firm specializing in quantitative strategies powered by state-of-the-art machine learning. The firm generates price forecasts for over 50,000 financial instruments spanning equities, fixed income, currencies, commodities, and crypto, trading across 35 countries with $250 billion in daily volume. XTX Markets provides differentiated liquidity directly to institutional clients worldwide via exchanges and alternative trading venues. The firm operates one of the largest computational research clusters in the trading industry, comprising 25,000 GPUs and 650 petabytes of usable storage, with a large-scale data centre under construction in Finland. With approximately 250 employees, XTX combines world-class expertise in mathematics, physics, computer science, and machine learning to maintain a competitive edge in high-frequency and systematic trading. The firm is also a major philanthropic donor, having committed over 350 million pounds to education, mathematics, and scientific research since 2020.