Citadel Securities

https://www.citadelsecurities.com/

Jane Street

https://www.janestreet.com/

Virtu

https://www.virtu.com/

Old Mission

https://www.oldmissioncapital.com/

DE Shaw

https://www.deshaw.com/

WorldQuant

https://www.worldquant.com/

3Red Partners

https://www.3redpartners.com/

Cubist

https://point72.com/cubist/

Point 72

https://point72.com/

Headlands

https://www.headlandstech.com/

Balysany

https://www.bamfunds.com/

GTS

https://gtsx.com

Tudor

https://www.tudor.com/

Radix

https://www.radix-trading.com/

PDT Partners

https://www.pdtpartners.com/

ELK

https://elkcapitalmarkets.com/

Two Sigma

https://www.twosigma.com/

Squarepoint

https://www.squarepoint-capital.com/

Chicago Trading

https://www.chicagotrading.com/

Jump Trading

https://www.jumptrading.com/

G-Research

https://www.gresearch.com/

TGS Management

https://www.tgsmc.com/

TD Securities

https://www.tdsecurities.com/

SIG (Susquehanna)

https://www.sig.com/

Scientech Research

https://www.scientechresearch.io/

Five Rings

https://fiverings.com/

Xantium

https://www.xantium.com/

Aquatic

https://aquatic.com/

Eqvilent

https://www.eqvilent.com/

Optiver

https://optiver.com/

Vatic

https://www.vaticlabs.ai/

DRW

https://drw.com/

Eisler Capital

https://eislercapital.com/

Millennium

https://www.mlp.com/

Renaissance Technologies (RenTec)

https://www.rentec.com/

Tower Research Capital

https://www.tower-research.com/

Schonfeld

https://www.schonfeld.com/

Verition

https://www.verition.com/

ExodusPoint Capital

https://www.exoduspoint.com/

Belvedere Trading

https://www.belvederetrading.com/

Wingspan Trading

https://www.wingspantrading.com/

XTX Markets

https://www.xtxmarkets.com/

Ansatz Capital

https://www.ansatz.capital/

boerboel

https://www.boerboeltrading.com/

Auros

https://www.auros.global/