| Abbreviation | Definition |
|---|---|
| USGF | United States Growth Funds |
| USIF | United States- India Fund |
| USM | Unlisted Securities Market |
| USND | Utility Shareholders of North Dakota |
| UTFU-I | Utilities: Foreign Utilities Index |
| UTMA | Uniform Transfer to Minors Act |
| UTP | Unlisted Trading Privileges Company |
| UTQ | Hutchison Technology, Inc. options |
| UTS | Unified Trading Session |
| UTY | Utility Sector |
| UVF | Corvis Corporation options |
| UVQ | Under-Valued Quarterly |
| UWL | SonicWall, Inc. options |
| UWQ | SkyWest Inc. options |
| UWV | Waypoint Financial Corporation options |
| UWY | Wynne Resorts, Ltd. options |
| UXH | Rudolph Technologies, Inc. options |
| UXR | AudioCodes, Ltd. options |
| UYA | Universal Yield Add-in |
| UYB | iBasis, Inc. options |