| Abbreviation | Definition |
|---|---|
| CERAP | Child Evaluation Risk Assessment Protocol |
| CFK | C E Franklin, LTD. |
| CFS | ComForce Corporation |
| CFW | Computron Software, Inc. |
| CGLA | Cagles, Inc. Class A |
| CGN | Cognitronics Corporation |
| CGS | CEC Resources, LTD. |
| CGY | Carnegie International Corporation (de-listed) |
| CGY | Carnegie International Corporation (de-listed) |
| CGY | Carnegie International Corporation of Colorado |
| CHC | Charter Municipal Marketing Acceptance Company |
| CHC | Charter Municipal Marketing Acceptance Company (de-listed) |
| CHC | Charter Municipal Marketing Acceptance Company (de-listed) |
| CIA | Citizens, Inc. |
| CID | Chieftain International, Inc. |
| CIZ | Citizens Holding Company of Mississippi |
| CLQ | Cold Metal Products, Inc. |
| CLT | Cominco, LTD. |
| CME | Core Materials Corporation |
| CMW | Canadian Marconi Corporation |