| Abbreviation | Definition |
|---|---|
| USFC | U S Freightways Corporation |
| USFS | U S Franchise Systems, Inc. |
| USFX | U S Fax, Inc. |
| USGL | U S Gold Corporation |
| USHG | U S Home & Garden, Inc. |
| USHO | U S Homecare Corporation |
| USHP | United Shipping and Technologies |
| USIH | U. S. I. Holdings Corporation |
| USIS | U S Industrial Services, Inc. |
| USISX | USAA Mutual Funds Trust Income Stock Fund (de-listed) |
| USISX | USAA Mutual Funds Trust Income Stock Fund (de-listed) |
| USIT | U S Interactive, Inc. |
| USIT | U.S. Interactive, Incorporated (de-listed) |
| USIT | U.S. Interactive, Incorporated (de-listed) |
| USIX | USInterNetworking, Inc. |
| USIX | USInterNetworking, Incorporated (de-listed) |
| USIX | USInterNetworking, Incorporated (de-listed) |
| USLB | PowerShares Russell 1000 Low Beta Equal Weight Portfolio |
| USLB | U S Laboratories, Inc. |
| USLBW | U S Laboratories, Inc. Warrants |