| Abbreviation | Definition |
|---|---|
| AMQT | Ameriquest Technologies, Inc. |
| AMRB | American River Holdings of California |
| AMRI | Albany Molecular Research, Inc. |
| AMRK | Amkor Technology, Inc. |
| AMRN | Amerin Corporation, P. L. C. |
| AMRR | American Sports Machines, Inc. |
| AMRS | Amyris, Inc. |
| AMRSW | Amerus Life Holdings, Inc. Warrants |
| AMSC | American Superconductor |
| AMSE | Americas Senior Financial Services, Inc |
| AMSGA | Amsberg Corporation Class A |
| AMSGB | Amsberg Corporation Class B |
| AMSI | Apache Medical Systems, Inc. |
| AMSOU | Advantage Marketing Systems UTS/02 |
| AMST | American Stone Industries |
| AMSWA | American Software, Inc. Class A |
| AMSY | American Management Systems, Inc. |
| AMTA | Amistar Corporation |
| AMTD | Ameritrade Holding Corporation |
| AMTR | Amtran, Inc. |