- Bloomberg Finance LP
- Bolsas Y Mercados Españoles
- Born Capital LLC
- Celoxica Limited
- Colt Technology Services
- CQG
- Cunningham Trading Systems, LLC
- Fidessa
- Fixnetix Limited
- Itiviti AB
- QuantHouse SAS
- Quod Financial
- RTS Realtime Systems Group
- SLIB
- Teleinvest International AG
- Trading Technologies International, Inc.
- Ullink SAS
- Vela Trading Systems LLC
- Virtu Financial Ireland Ltd