| Abbreviation | Definition |
|---|---|
| USOLW | USOL Holdings, Incorporated Warrants (de-listed) |
| USON | U S Oncology, Inc. |
| USON | US Oncology, Incorporated (de-listed) |
| USON | US Oncology, Incorporated (de-listed) |
| USOO | U S 1 Industries, Inc. |
| USOO | US1 Industries, Incorporated (de-listed) |
| USOO | US1 Industries, Incorporated (de-listed) |
| USPD.US | Ultra Shield Products International |
| USPI | United States Property, Inc. |
| USPI | United States Property, Incorporated (de-listed) |
| USPI | United States Property, Incorporated (de-listed) |
| USPL | U S Plastic Lumber Corporation |
| USPLF | U S Plastic Lumber Corporation |
| USPN | U S Pawn, Inc. |
| USPS | U S Power Systems, Inc. |
| USPTS | U S P Real Estate Investment Trust |
| USRC | Unisource Corporation |
| USRX | U. S. Robotics |
| USTI | United Systems Technology, Inc. |
| USTI | United Systems Technology, Incorporated (de-listed) |