- Actant Ltd
- Activ Financial Systems, Inc
- Advance Technology Solutions ATS S.p.A.
- ATEO
- Bloomberg Finance LP
- Bolsas Y Mercados Españoles
- Celoxica Limited
- Charm BV
- Comunytek Consultores
- CQG
- Cunningham Trading Systems, LLC
- Deriva B.V.
- Digit Base
- ELIDATA S.r.l.
- Exegy, Inc
- Fidessa
- Finantech
- Fixnetix Limited
- GenXs BV
- GX2 Systems
- Horizon Connect
- Itiviti AB
- List-Group S.p.A.
- OnixS
- Quod Financial
- Rithmic, LLC
- RTS Realtime Systems Group
- Sol-3 GmbH & Co KG
- Teleinvest International AG
- Tick Trading Software AG
- Trading Technologies International, Inc.
- Ullink SAS
- Unity Trading Systems, LP
- Vela Trading Systems LLC
- Virtu Financial Ireland Ltd