| Abbreviation | Definition |
|---|---|
| UAX | USurf America, Inc. |
| UDG | Unidigital, Inc. |
| UDW | U S Dataworks, Inc. |
| UG | United Guardian, Inc. |
| UHGPA | U S Home & Garden Trust I |
| ULU | Uluru, Inc. |
| UMH | United Mobile Homes, Inc. |
| UNI | UNI Marts, Incorporated |
| UPX | Unapix Entertainment, Inc. |
| UQM | Unique Mobility, Inc. |
| USL | U S Liquids, Inc. |
| USM | United States Cellular Corporation |
| UTI | U T I Energy Corporation |
| UTL | Unitil Corporation |
| UWN | Nevada Gold & Casinos, Inc. |
| UXG | US Gold Corporation |
| UXP | United States Exploration, Inc. |
| UYB | YOUNG BROADCASTING, INC. options |
| VCR | Sensory Science Corporation |
| VDC | V D C Communications, Inc. |