| Abbreviation | Definition |
|---|---|
| UIF | Unit Investment Fund |
| UIV | Advent Software, Inc. Options |
| UKX | British Financial Times Stock Exchange (FTSE) 100 Index |
| UKZ | Candela Corporation Options |
| UMJ | Ursa Major Minerals, Inc. |
| UNCH | Unchanged |
| UOJ | OSI Systems, Inc. Options |
| UOT | University Of Trading |
| UOV | Alcatel Optronics Options |
| UPP | Urban Pilot Programme |
| UPSE | Uttar Pradesh Stock Exchange |
| UPY | Palm, Inc. Options (new symbol is AUB) |
| UQD | JDS Uniphase Corporation options |
| UQJ | Objective Systems Integrator options |
| UQS | BCML Corporation options |
| UQS | Universal Quotation Service |
| UQT | Ultratech Stepper, Inc. options |
| UQV | E G L, Inc. options |
| URPV | Up-Relative-Price-Volume |
| USA | Unlimited Savings Allowance |