| Abbreviation | Definition |
|---|---|
| USVI | US Vision, Incorporated (de-listed) |
| USVO | U S A Video Interactive Corporation |
| USWC | U S Wireless Corporation |
| USWDA | U S Wireless Data, Inc. |
| USWI | U S WATS, Inc. |
| USXP | Universal Express, Inc. |
| USXX | U S Technologies, Inc. |
| UTAH | Utah Resources International, Inc. |
| UTBA | United B&A |
| UTBI | United Tennessee Bankshares, Inc. |
| UTBTY | United Biscuits Group |
| UTCC | rsus Telecom Corporation |
| UTCC | Ursus Telecom Corporation |
| UTCI | Uniroyal Technology Corporation, Inc. |
| UTCI | Uniroyal Technology Corporation, Incorporated (de-listed) |
| UTCI | Uniroyal Technology Corporation, Incorporated (de-listed) |
| UTCIW | Uniroyal Technology Corporation, Inc. Warrants |
| UTCIW | Uniroyal Technology Corporation, Incorporated Warrants (de-listed) |
| UTCIW | Uniroyal Technology Corporation, Incorporated Warrants (de-listed) |
| UTCL | Utah Clay Technology, Inc. |