| CDIO | | In Vitro & In Vivo Diagnostic Substances | 1870144 |
| CDIX | | Services-Offices & Clinics of Doctors of Medicine | 811222 |
| CDLR | | Deep Sea Foreign Transportation of Freight | 1978867 |
| CDLX | | Services-Computer Programming, Data Processing, Etc. | 1666071 |
| CDNA | | Services-Medical Laboratories | 1217234 |
| CDNS | | Services-Prepackaged Software | 813672 |
| CDP | | Real Estate Investment Trusts | 860546 |
| CDR | | Real Estate Investment Trusts | 761648 |
| CDRE | | Orthopedic, Prosthetic & Surgical Appliances & Supplies | 1860543 |
| CDRO | | Services-Miscellaneous Amusement & Recreation | 1866782 |
| CDT | | Pharmaceutical Preparations | 1896212 |
| CDTG | | Sanitary Services | 1793895 |
| CDTX | | Biological Products, (No Diagnostic Substances) | 1610618 |
| CDW | | Retail-Catalog & Mail-Order Houses | 1402057 |
| CDXS | | Industrial Organic Chemicals | 1200375 |
| CDZI | | Water Supply | 727273 |
| CE | | Plastic Material, Synth Resin/Rubber, Cellulos (No Glass) | 1306830 |
| CECO | | Industrial & Commercial Fans & Blowers & Air Purifing Equip | 3197 |
| CEE | | - | 860489 |
| CEF | | Commodity Contracts Brokers & Dealers | 1726122 |
| CEG | | Electric Services | 1868275 |
| CEHCF | | - | 1668393 |
| CEIN | | Crude Petroleum & Natural Gas | 1309082 |
| CELC | | Services-Medical Laboratories | 1603454 |
| CELH | | Bottled & Canned Soft Drinks & Carbonated Waters | 1341766 |
| CELU | | Pharmaceutical Preparations | 1752828 |
| CELZ | | Biological Products, (No Diagnostic Substances) | 1187953 |
| CENN | | Motor Vehicles & Passenger Car Bodies | 1707919 |
| CENT | | Wholesale-Miscellaneous Nondurable Goods | 887733 |
| CENX | | Primary Production of Aluminum | 949157 |
| CEP | | Blank Checks | 1865602 |
| CEPF | | Blank Checks | 2034267 |
| CEPO | | Blank Checks | 2027708 |
| CEPT | | Blank Checks | 2034269 |
| CEPU | | Electric Services | 1717161 |
| CEPV | | Blank Checks | 2034266 |
| CERO | | Biological Products, (No Diagnostic Substances) | 1870404 |
| CERS | | Surgical & Medical Instruments & Apparatus | 1020214 |
| CERT | | Services-Prepackaged Software | 1827090 |
| CET | | 0000 | 18748 |
| CETI | | Miscellaneous Electrical Machinery, Equipment & Supplies | 1935092 |
| CETX | | Electronic Components & Accessories | 1435064 |
| CETY | | Natural Gas Distribution | 1329606 |
| CEV | | - | 1074692 |
| CEVA | | Services-Computer Programming, Data Processing, Etc. | 1173489 |
| CF | | Agricultural Chemicals | 1324404 |
| CFAC | | - | 2077877 |
| CFBK | | National Commercial Banks | 1070680 |
| CFFI | | State Commercial Banks | 913341 |
| CFFN | | Savings Institution, Federally Chartered | 1490906 |