| Abbreviation | Definition |
|---|---|
| AMTSE | American Metals Service, Inc. |
| AMUIF | Amusements International, LTD. |
| AMUN | Amerimmune Pharmaceutical |
| AMVC | Advanced Machine Vision Corporation |
| AMVCA | Advanced Machine Vision Corporation Class A |
| AMVPW | Amerivest Properties, Inc. Warrants |
| AMWD | American Woodmark Corporation |
| AMZN | Amazon.Com, Inc. |
| ANAD | Anadigics, Inc. |
| ANAFF | A & A International Industries, Inc. |
| ANAFF | A & A International Industries, Incorporated |
| ANAT | American National Insurance Company |
| ANBC | A N B Corporation |
| ANCC | Airnet Communications Corporation |
| ANCO | Anacomp, Inc. |
| ANCOW | Anacomp, Inc. Warrants |
| ANCR | Ancor Communications, Inc. |
| ANCS | American Consumers |
| ANCX | Access National Corporation (New one; old ANCX delisted) |
| ANDB | Andover Bancorp, Inc. |