| Abbreviation | Definition |
|---|---|
| AUOR | Authoriszor, Inc. |
| AURE | Auric Metals Corporation |
| AURL | Aureal Semiconductor, Inc. |
| AURLE | Aureal Semiconductor, Inc. |
| AURU | Aurora Electronics, Inc. |
| AUST | Austin's International, Inc. |
| AUTC | AutoTradeCenter.com, Inc. |
| AUTO | AutoInfo, Inc. |
| AUXL | Auxilium Pharmaceuticals, Inc. |
| AVAL | Avalon Group, Inc. |
| AVAN | Avant Immunotherapeutics, Inc. |
| AVAR | Avaterra.Com, Inc. |
| AVARE | Avaterra.Com, Inc. (delisted) |
| AVAT | Avatex Corporation |
| AVBC | Advanced Bio / Chem, Inc. |
| AVCC | Acorn Holding Corporation |
| AVCI | Avici Systems, Inc. |
| AVCS | American Vantage Companies |
| AVDI | Advanced Technologies, Inc. (delisted) |
| AVDO | Avado Brands, Inc. |