1. Abel Noser Holdings LLC
2. ACA Compliance Group Holdings
LLC
3. Accenture PLC
4. Aquis Technologies
5. B-Next AG
6. Crisil Limited
7. eFlow Ltd.
8. Eventus Systems
9. Fidelity National Information Services Inc.
10. International Business Machines Corporation
11. IPC Systems Inc.
12. Nasdaq Inc.
13. Nice Ltd.
14. OneMarketData
LLC
15. Red Deer
16. SIA S.p.A.
17. Trading Technologies International Inc.
18. Trillium Management
LLC