| TBHC | | Retail-Retail Stores, NEC | 1056285 |
| TBI | | Services-Help Supply Services | 768899 |
| TBLA | | Services-Computer Programming, Data Processing, Etc. | 1840502 |
| TBLD | | - | 1820378 |
| TBLLF | | - | 1854257 |
| TBMC | | Blank Checks | 1934945 |
| TBN | | Crude Petroleum & Natural Gas | 1997652 |
| TBPH | | Pharmaceutical Preparations | 1583107 |
| TBRG | | Services-Computer Programming Services | 1169445 |
| TBTC | | Services-Miscellaneous Amusement & Recreation | 1090396 |
| TC | | Services-Business Services, NEC | 1743340 |
| TCBI | | State Commercial Banks | 1077428 |
| TCBK | | State Commercial Banks | 356171 |
| TCBPY | | Biological Products, (No Diagnostic Substances) | 1872812 |
| TCBS | | Savings Institutions, Not Federally Chartered | 1849466 |
| TCBX | | Savings Institutions, Not Federally Chartered | 1781730 |
| TCGL | | Services-Computer Processing & Data Preparation | 2047190 |
| TCI | | Real Estate Investment Trusts | 733590 |
| TCMD | | Surgical & Medical Instruments & Apparatus | 1027838 |
| TCNNF | | Medicinal Chemicals & Botanical Products | 1754195 |
| TCOM | | Services-Business Services, NEC | 1269238 |
| TCPA | | Natural Gas Transmission | 99070 |
| TCPC | | - | 1370755 |
| TCRG | | Medicinal Chemicals & Botanical Products | 1879270 |
| TCRI | | Blank Checks | 1481443 |
| TCRT | | Pharmaceutical Preparations | 1107421 |
| TCRX | | Biological Products, (No Diagnostic Substances) | 1783328 |
| TCX | | Services-Computer Processing & Data Preparation | 909494 |
| TD | | Commercial Banks, NEC | 947263 |
| TDAC | | Blank Checks | 1926599 |
| TDAY | | Newspapers: Publishing or Publishing & Printing | 1579684 |
| TDC | | Services-Prepackaged Software | 816761 |
| TDF | | - | 919893 |
| TDG | | Aircraft Parts & Auxiliary Equipment, NEC | 1260221 |
| TDGGF | | - | 1972589 |
| TDHG | | Services-Computer Processing & Data Preparation | 2095898 |
| TDIC | | Services-Management Services | 2041338 |
| TDOC | | Services-Offices & Clinics of Doctors of Medicine | 1477449 |
| TDRRF | | - | 1921050 |
| TDS | | Telephone Communications (No Radiotelephone) | 1051512 |
| TDST | | Blank Checks | 2075888 |
| TDTH | | Services-Business Services, NEC | 1983550 |
| TDUP | | Retail-Catalog & Mail-Order Houses | 1484778 |
| TDW | | Water Transportation | 98222 |
| TDWD | | Blank Checks | 2076616 |
| TDY | | Search, Detection, Navigation, Guidance, Aeronautical Sys | 1094285 |
| TE | | Semiconductors & Related Devices | 1992243 |
| TEAD | | Services-Computer Programming, Data Processing, Etc. | 1454938 |
| TEAM | | Services-Prepackaged Software | 1650372 |
| TECH | | Biological Products, (No Diagnostic Substances) | 842023 |
