Quant Companies in Tokyo 🇯🇵

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.

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.

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.

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.