| CORT | | Pharmaceutical Preparations | 1088856 |
| CORZ | | Finance Services | 1839341 |
| COSG | | Soap, Detergents, Cleang Preparations, Perfumes, Cosmetics | 1854183 |
| COSM | | Wholesale-Drugs, Proprietaries & Druggists' Sundries | 1474167 |
| COSO | | State Commercial Banks | 1297107 |
| COST | | Retail-Variety Stores | 909832 |
| COTY | | Perfumes, Cosmetics & Other Toilet Preparations | 1024305 |
| COUR | | Services-Prepackaged Software | 1651562 |
| COYA | | Pharmaceutical Preparations | 1835022 |
| CP | | Railroads, Line-Haul Operating | 16875 |
| CPA | | Air Transportation, Scheduled | 1345105 |
| CPAC | | Cement, Hydraulic | 1221029 |
| CPAY | | Services-Business Services, NEC | 1175454 |
| CPB | | Food and Kindred Products | 16732 |
| CPBI | | Savings Institution, Federally Chartered | 1979332 |
| CPCPF | | - | 1868050 |
| CPF | | State Commercial Banks | 701347 |
| CPHC | | Services-Racing, Including Track Operation | 1672909 |
| CPHI | | Pharmaceutical Preparations | 1106644 |
| CPIVF | | - | 1712294 |
| CPIX | | Pharmaceutical Preparations | 1087294 |
| CPK | | Natural Gas Transmisison & Distribution | 19745 |
| CPKF | | National Commercial Banks | 847538 |
| CPMD | | Pharmaceutical Preparations | 1081938 |
| CPMV | | Biological Products, (No Diagnostic Substances) | 836564 |
| CPNG | | Retail-Catalog & Mail-Order Houses | 1834584 |
| CPOP | | Services-Amusement & Recreation Services | 1807389 |
| CPPBY | | - | 1551468 |
| CPPTL | | Real Estate | 1837671 |
| CPRI | | Leather & Leather Products | 1530721 |
| CPRT | | Retail-Auto Dealers & Gasoline Stations | 900075 |
| CPRX | | Pharmaceutical Preparations | 1369568 |
| CPS | | Motor Vehicle Parts & Accessories | 1320461 |
| CPSH | | Pottery & Related Products | 814676 |
| CPSS | | Finance Services | 889609 |
| CPT | | Real Estate Investment Trusts | 906345 |
| CPTP | | Lessors of Real Property, NEC | 202947 |
| CPZ | | - | 1717457 |
| CQP | | Natural Gas Distribution | 1383650 |
| CR | | Miscellaneous Fabricated Metal Products | 1944013 |
| CRAC | | Blank Checks | 2070887 |
| CRAI | | Services-Legal Services | 1053706 |
| CRAQ | | Blank Checks | 2058359 |
| CRARF | | - | 1279967 |
| CRAWA | | Industrial Instruments For Measurement, Display, and Control | 47307 |
| CRBG | | Life Insurance | 1889539 |
| CRBP | | Pharmaceutical Preparations | 1595097 |
| CRBU | | Biological Products, (No Diagnostic Substances) | 1619856 |
| CRC | | Crude Petroleum & Natural Gas | 1609253 |
| CRCE | | Crude Petroleum & Natural Gas | 1911467 |