| Abbreviation | Definition |
|---|---|
| ALL | Allstate Corporation |
| ALLPA | Allstate Financing I |
| ALM | Allmerica Securities Trust |
| ALN | Allen Telecom, Inc. |
| ALO | Alpharma, Inc. |
| ALPPN | Alabama Power Company Preferred N |
| ALPPO | Alabama Power Company Preferred O |
| ALPPQ | Alabama Power Company Capital Trust I |
| ALPPR | Alabama Power Company Capital Trust II |
| ALQ | Alabama Power Company |
| ALS | Alstom |
| ALT | Allegheny Teledyne, Inc. (delisted) |
| ALV | Autoliv, Inc. |
| ALX | Alexanders, Inc. |
| ALZ | Alabama Power Company |
| AM | American Greetings Corporation |
| AMB | A M B Property Corporation |
| AMBPA | A M B Property Corporation Preferred A |
| AMD | Advanced Micro Devices, Inc. |
| AME | Ametek, Inc. |