| Abbreviation | Definition |
|---|---|
| CEDC | Central European Distributors Corporation |
| CEDNE | Consolidated Edison Company of New York |
| CEDSP | Commonwealth Edison Company Preferred |
| CEFC | Commercial National Financial Corporation of Michigan |
| CEFT | Concord E F S, Inc. |
| CEGE | Cell Genesys, Inc. |
| CEKX | Copper Lake Explorations, Ltd. (delisted) |
| CELG | Celgene Corporation |
| CELK | CableLink, Inc. |
| CELL | BrightPoint, Inc. |
| CELN | Celsion Corporation |
| CELP | Cellular Products, Inc. |
| CELT | Celtic Investments, Inc. |
| CELX | Celox Laboratories, Inc. |
| CEMCY | Cemig Compania Energetics |
| CEMTY | Cementos Lima, S. A. |
| CEMX | C E M Corporation |
| CENB | Century Bancorp, Inc., of North Carolina |
| CENI | Conestoga Enterprises, Inc. |
| CENL | Centennial Technology, Inc. |