| Abbreviation | Definition |
|---|---|
| AAME | Atlantic American Corporation |
| AANB | Abigail Adams National Bancorp |
| AANP | American Absorbing National Products |
| AAOF | AIG Asian Opportunity Fund |
| AAON | A A O N, Inc. |
| AAON | AAON, Incorporated |
| AAPC | American Architectural Products, Inc. |
| AAPC | American Architectural Products, Incorporated (de-listed) |
| AAPL | Apple Computer, Inc. |
| AAPL | Apple Computer, Incorporated |
| AAPTY | Anglo American Platinum Corporation |
| AARO | Aarow Environmental Group, Inc. |
| AARO | Aarow Environmental Group, Incorporated (de-listed) |
| AASAY | Apasco S. A. de C. V. |
| AASAY | Apasco Sociedad Anónima de Capital Variable (de-listed) |
| AASI | Advanced Aerodynamics & Structures, Inc. |
| AASI | Advanced Aerodynamics & Structures, Incorporated (de-listed) |
| AASIU | Advanced Aerodynamics & Structures, Inc. |
| AASIU | Advanced Aerodynamics & Structures, Incorporated (de-listed) |
| AASIW | Advanced Aerodynamics & Structures, Inc. Warrants |