| Abbreviation | Definition |
|---|---|
| UNIRZ | United Restaurants, Inc. Warrants Z |
| UNIRZ | United Restaurants, Incorporated Warrants Z (de-listed) |
| UNIRZ | United Restaurants, Incorporated Warrants Z (de-listed) |
| UNIS | Uniservice Corporation |
| UNIS | Uniservice Corporation (de-listed) |
| UNIS | Uniservice Corporation (de-listed) |
| UNIT | Umitrin, Inc. |
| UNIT | Umitrin, Incorporated (de-listed) |
| UNIT | Umitrin, Incorporated (de-listed) |
| UNMG | Unimark Group, Inc. |
| UNMG | Unimark Group, Incorporated (de-listed) |
| UNMG | Unimark Group, Incorporated (de-listed) |
| UNNF | Union National Financial Corporation |
| UNNL | Union National Bancorp |
| UNRC | Unico, Inc., of New Mexico |
| UNRC | Unico, Incorporated, of New Mexico (de-listed) |
| UNRC | Unico, Incorporated, of New Mexico (de-listed) |
| UNRG | United Energy, Inc., of Nevada |
| UNRG | United Energy, Incorporated, of Nevada (de-listed) |
| UNRG | United Energy, Incorporated, of Nevada (de-listed) |