3Red Partners

A Priori Investments

Acadian Asset Management

Albatross Labs

AlphaGrep

AlphaSimplex

Alphataraxia Management

Alyeska Investment Group

Ansatz Capital

AQR Capital Management

Aquatic Capital

Arrowstreet Capital

ART Advisors

Aspect Capital

Athena Capital Research

AXQ Capital

Balyasny Asset Management

Banyan Alpha Investment

Baupost Group

Belvedere Trading

BlackEdge Capital

Bluefin Capital Management

Blueshift Asset Management

Boerboel Trading

Boronia Capital

Boulder Hill Capital Management

Brevan Howard

Bridgewater Associates

Cantor Fitzgerald

Capital Fund Management

Capital Markets Trading

Capula Investment Management LLP

Caxton Associates

Centiva Capital

Chicago Trading Company

Citadel

Clear Street Markets

Consolidated Trading

Convex Asset Management

CQS

Crabel Capital Management

Cubist Systematic Strategies (aka Point72)

Dark Forest

Davinci Trading

DE Shaw

Dolat Capital

DRW

Duality Group

DV Trading

Eclipse Trading

Edgehog Trading

Edgestream Partners

Eisler Capital

Elk Capital Markets

Emergent Trading

Engineers Gate

Epoch Capital

Eqvilent

Ergoteles Capital

Eschaton Trading

Evergreen Statistical Trading

ExodusPoint

Exponential Trading

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

Grass Hopper

Graviton Research Capital

Group One Trading LP

GSA Capital Partners

GTS

Guggenheim Partners

HAP Capital

HC Technologies

Headlands Technologies

Highbridge Capital Management

Hudson Bay Capital

Hudson River Trading

Hull Tactical Asset Allocation

IMC Financial Markets

Jacobs Levy Equity Management

Jain Global

Jane Street

Jocassee Quantitative

Jump Trading

Kepos Capital

Kore Trading

Kula Investments

Laurion Capital Management

Life Trading

Lord Abbett

Lynx Asset Management

Mako

Man Group

Mana Partners

Marquette Partners

Marshall Wace

Maven Securities

Maverick Derivatives

Monoceros

Nebula Research & Development

Old Mission Capital

Optiver

Paloma Partners

PanAgora

Parallax Volatility Advisers

PDT Partners

Peak6

PGIM Quantitative Solutions

Point72

Prime Trading LLC

QMS Capital Management

Qsemble Capital Management

Quadeye

Quadrature Capital

Quantbot Technologies

Quantbox Research

Quantitative Investment Management

Quantlab Financial

QuantRes (aka Market Research Inc)

Quantumrock Capital

Qube Research & Technologies

QVR Advisors

Radix Trading

Renaissance Technologies

Rokos Capital Management

Rosetta Analytics

Rotella Capital

RSJ

Schonfeld Strategic Advisors

Segantii Capital Management

Sensato Investors

Seven Eight Capital

Simplex Trading

Spark Investment Management

Squarepoint Capital

State Street

Stevens Capital Management

Sunrise Futures

Susquehanna International Group

Systematica Investments

TA Associates Management LP

Tanius Technology

Teza Technologies

TGS Management Company

Tower Research Capital

Tradebot

Tradelink Holdings

TransMarket Group

Trexquant Investment

Tudor Investment Corporation

Two Sigma

Valkyrie Trading

Vatic Investments

Vector Trading

Verition Fund Management

Viking Global Investors LP

Virtu Financial

Vivienne Court Trading

Volant Trading

Voleon Group

Voloridge Investment Management

Volterra Technologies

Walleye Capital

Waterfront International Ltd (tech backend for Stevens Capital Management)

WH Trading

Winton Capital Management

Wolverine Trading

WorldQuant (aka Millenium)

Xantium (aka Tudor)

XR Trading

XTX Markets

Note: If there is an organisation missing from the above list, then do let us know, contact