| Relationships | Role | Relationship Start | Relationship End |
| Comerica Securities, Inc. | Parent | 7/11/2001 | 1/30/2003 |
| Imperial Securities Corp. | Parent | 7/31/1997 | 7/10/2001 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Comerica Securities, Inc. | Buyer | Discontinued | 1/31/2003 |