| Relationships | Role | Relationship Start | Relationship End |
| Tradeweb Global Llc | Parent | 10/26/2010 | 3/15/2012 |
| Tradeweb Group Llc | Parent | 12/26/2001 | 5/21/2004 |
| Tradeweb Holdings Llc | Parent | 4/8/1998 | 12/25/2001 |
| Citigroup Financial Products Inc. | Parent | 7/1/1999 | 8/31/2001 |
| Salomon Brothers Holding Company Inc | Parent | 10/8/1998 | 6/30/1999 |
| Tradeweb Holdings Llc | Parent | 3/31/1998 | 4/7/1998 |