| Abbreviation | Definition |
|---|---|
| AIP | American Israeli Paper Mills, LTD. |
| AIS | AMPAL American Israel Corporation |
| AJX | Standard Automotive Corporation (formerly Ajax Automotive) |
| ALF | Assisted Living Concepts, Inc. |
| ALI | Alterra Healthcare Corporation |
| ALR | Allied Research Corporation |
| ALT | Alteon, Inc. |
| ALU | Allou Health & Beauty Care, Inc. |
| AMC | American Mortgage Acceptance Corporation |
| AMEX | American Exchange Symbols |
| AMEX | AMEX SYMBOLS; American Exchange Symbols |
| AMI | Alaris Medical, Inc. |
| AMI | Alaris Medical, Incorporated |
| AMK | American Technical Ceramic Corporation |
| AMM | Advantage Marketing Systems, Inc. |
| AMM | Advantage Marketing Systems, Incorporated |
| AMMA | Advantage Marketing Systems, Inc. Class A |
| AMMA | Advantage Marketing Systems, Inc. Class A (de-listed) |
| AMMA | Advantage Marketing Systems, Inc. Class A (de-listed) |
| AMS | American Shared Hospital Services |