| AAB | Aberdeen International, Inc. | |
| AAH | Aastra Technologies, Limited | |
| AAV | Advantage Oil & Gas, LTD. | |
| ABC | Asia Bio-Chem Group Corporation | |
| ABH | AbitibiBowater, Inc. (de-listed 2009) | |
| ABK.A | Allbanc Split Corporation Class A Capital Shares | |
| ABO-A | Arbor Memorial Services, Inc. – Class A | |
| ABT | Absolute Software Corporation | |
| ACC | Amica Mature Lifestyles, Inc./Style de Vie Amica, Inc. | |
| ACD | Accord Financial Corporation | |
| ACE | ACE Aviation Holdings, Inc. | |
| ACM | Astral Media, Inc. | |
| ACO | Atco, LTD. Class I | |
| ACQ | AutoCanada, Inc. | |
| AD | Alaris Royalty Corporation | |
| ADA | Acadian Mining Corporation | |
| ADC | Canadian Advantaged Convertibles Fund | |
| ADN | Acadian Timber Corporation | |
| ADW | Andrew Peller, Limited | |
| AEI | Arsenal Energy, Inc. | |
| AEM | Agnico-Eagle Mines, LTD. | |
| AEN | Antrim Energy, Inc. | |
| AER | Groupe Aeroplan, Incorporated | |
| AET | ARC Energy Trust (de-listed) | |
| AEU | ACTIVEnergy Income Fund | |
