| CWCO | | Water Supply | 928340 |
| CWD | | Real Estate | 1627282 |
| CWEN | | Electric Services | 1567683 |
| CWGL | | Beverages | 1562151 |
| CWH | | Retail-Auto Dealers & Gasoline Stations | 1669779 |
| CWK | | Real Estate | 1628369 |
| CWNOF | | Services-Business Services, NEC | 1145898 |
| CWPE | | Wholesale-Petroleum & Petroleum Products (No Bulk Stations) | 1741220 |
| CWST | | Refuse Systems | 911177 |
| CWT | | Water Supply | 1035201 |
| CX | | Cement, Hydraulic | 1076378 |
| CXAI | | Services-Prepackaged Software | 1820875 |
| CXDO | | Telephone Communications (No Radiotelephone) | 1075736 |
| CXE | | - | 845606 |
| CXH | | - | 847411 |
| CXM | | Services-Prepackaged Software | 1569345 |
| CXT | | Miscellaneous Fabricated Metal Products | 25445 |
| CXW | | Real Estate Investment Trusts | 1070985 |
| CXXIF | | Medicinal Chemicals & Botanical Products | 831609 |
| CYAN | | Medicinal Chemicals & Botanical Products | 768408 |
| CYBN | | Pharmaceutical Preparations | 1833141 |
| CYBR | | Services-Prepackaged Software | 1598110 |
| CYCA | | Services-Prepackaged Software | 1383088 |
| CYCN | | Pharmaceutical Preparations | 1755237 |
| CYCU | | Services-Computer Programming Services | 1868419 |
| CYD | | Engines & Turbines | 932695 |
| CYDY | | Pharmaceutical Preparations | 1175680 |
| CYH | | Services-General Medical & Surgical Hospitals, NEC | 1108109 |
| CYJBF | | - | 1436741 |
| CYN | | Services-Computer Programming Services | 1874097 |
| CYPH | | Pharmaceutical Preparations | 1509745 |
| CYRX | | Pharmaceutical Preparations | 1124524 |
| CYTK | | Pharmaceutical Preparations | 1061983 |
| CYTOF | | Pharmaceutical Preparations | 1601936 |
| CZFS | | State Commercial Banks | 739421 |
| CZNC | | State Commercial Banks | 810958 |
| CZR | | Hotels & Motels | 1590895 |
| CZWI | | Savings Institution, Federally Chartered | 1367859 |
| D | | Electric Services | 715957 |
| DAAQ | | Blank Checks | 2052162 |
| DAC | | Deep Sea Foreign Transportation of Freight | 1369241 |
| DAIC | | Services-Computer Integrated Systems Design | 2033770 |
| DAIO | | Instruments For Meas & Testing of Electricity & Elec Signals | 351998 |
| DAKT | | Miscellaneous Manufacturing Industries | 915779 |
| DAL | | Air Transportation, Scheduled | 27904 |
| DAN | | Motor Vehicle Parts & Accessories | 26780 |
| DAO | | Services-Educational Services | 1781753 |
| DAR | | Fats & Oils | 916540 |
| DARE | | Pharmaceutical Preparations | 1401914 |
| DASH | | Services-Business Services, NEC | 1792789 |
