See also the FAQ for Aspiring Quants.
- 3Red Partners
- A Priori Investments
- Acadian Asset Management
- Akuna Capital
- Albatross Labs
- AlphaGrep
- AlphaSimplex
- Alphataraxia Management
- Alyeska Investment Group
- Ansatz Capital
- AQR Capital Management
- Aquatic Capital
- Arrowstreet Capital
- ART Advisors
- Aspect Capital
- Atto Trading
- AXQ Capital
- Balyasny Asset Management
- Banyan Alpha Investment
- Belvedere Trading
- BlackEdge Capital
- Bluefin Capital Management
- Blueshift Asset Management
- Boerboel Trading
- Boulder Hill Capital Management
- Brevan Howard
- Bridgewater Associates
- Cantor Fitzgerald
- Capital Fund Management
- Capital Markets Trading
- Capstone
- Capula
- Caxton Associates
- Centiva Capital
- Chicago Trading Company
- Cipher Capital
- Citadel
- ClearAlpha
- Consolidated Trading
- CQS
- Cubist (part of Point72)
- Dark Forest
- DE Shaw
- Dolat Capital
- DRW
- Duality Group
- DV Trading
- Edgehog Trading
- Edgestream Partners
- Eisler Capital
- Elk Capital Markets
- Elequin Capital
- Emergent Trading
- Engineers Gate
- Eqvilent
- Ergoteles Capital
- Eschaton Trading
- Evergreen Statistical Trading
- ExodusPoint
- Five Rings
- Florin Court Capital
- Flow Traders
- Freestone Grove Partners
- G-Research
- GAM Systematic
- Garda Capital Partners
- Gelber Group
- Geneva Trading
- Geode Capital Management
- Graham Capital Management
- Graviton Research Capital
- Group One Trading
- GSA Capital Partners
- GTS
- HAP Capital
- Headlands Technologies
- Hudson Bay Capital
- Hudson River Trading
- IMC Financial Markets
- Jacobs Levy Equity Management
- Jain Global
- Jane Street
- Jocassee Quantitative
- Jump Trading
- Kepos Capital
- Kore Trading
- Kula Investments
- Laurion Capital Management
- Lord Abbett
- Lynx Asset Management
- Mako
- Man Group
- Mana Partners
- Marquette Partners
- Marshall Wace
- Maven Securities
- Millburn
- Monoceros
- Nebula Research & Development
- Old Mission Capital
- Optiver
- Paloma Partners
- PanAgora
- Parallax Volatility Advisers
- PDT Partners
- Peak6
- PGIM Quant Solutions
- Polaris7
- Prime Trading
- QMS Capital Management
- Qsemble Capital Management
- Quadeye
- Quadrature
- Quantbot Technologies
- Quantbox Research
- Quantitative Investment Management
- Quantlab Financial
- Quantumrock Capital
- Qube Research & Technologies
- QVR Advisors
- Radix Trading
- Renaissance Technologies
- Rokos Capital Management
- RSJ
- SCALP Trade
- Schonfeld Strategic Advisors
- Segantii Capital Management
- Sensato Investors
- Seven Eight Capital
- Simplex Trading
- Spark Investment Management
- Squarepoint Capital
- Stevens Capital Management
- Summit Securities Group
- Sumo
- Sunrise Futures
- Susquehanna International Group
- Systematica Investments
- Tanius Technology
- Teza Technologies
- TGS Management Company
- Tokka Labs
- Tower Research Capital
- Tradebot
- Tradelink Holdings
- TransMarket Group
- Trexquant Investment
- Two Sigma
- Valkyrie Trading
- Vatic Investments
- Vector Trading
- Verition Fund Management
- Virtu Financial
- Volant Trading
- Voleon Group
- Voloridge Investment Management
- Volterra Technologies
- Walleye Capital
- WH Trading
- Wincent
- Winton Capital Management
- Wintermute
- Wolverine Trading
- WorldQuant (part of Millenium)
- Xantium (part of Tudor)
- XR Trading
- XTX Markets
Thanks!