| BABB | | Retail-Eating Places | 1123596 |
| BAC | | National Commercial Banks | 70858 |
| BACC | | Blank Checks | 2059654 |
| BACK | | Services-Specialty Outpatient Facilities, NEC | 1729944 |
| BACQ | | Services-Computer Integrated Systems Design | 2028707 |
| BAER | | Services-Business Services, NEC | 1941536 |
| BAESY | | - | 895564 |
| BAFN | | State Commercial Banks | 1649739 |
| BAH | | Services-Management Consulting Services | 1443646 |
| BAK | | Industrial Organic Chemicals | 1071438 |
| BAKR | | Security & Commodity Brokers, Dealers, Exchanges & Services | 1904616 |
| BALL | | Metal Cans | 9389 |
| BALY | | Hotels & Motels | 1747079 |
| BAM | | Investment Advice | 1937926 |
| BANC | | National Commercial Banks | 1169770 |
| BAND | | Services-Prepackaged Software | 1514416 |
| BANF | | National Commercial Banks | 760498 |
| BANL | | Wholesale-Petroleum & Petroleum Products (No Bulk Stations) | 1914805 |
| BANR | | State Commercial Banks | 946673 |
| BANX | | - | 1578987 |
| BAO | | Services-Computer Programming, Data Processing, Etc. | 2049184 |
| BAOS | | Services-Business Services, NEC | 1811216 |
| BAP | | Commercial Banks, NEC | 1001290 |
| BAR | | Commodity Contracts Brokers & Dealers | 1690437 |
| BARK | | Retail-Retail Stores, NEC | 1819574 |
| BASA | | Miscellaneous Manufacturing Industries | 1448705 |
| BATL | | Crude Petroleum & Natural Gas | 1282648 |
| BATRA | | Services-Amusement & Recreation Services | 1958140 |
| BAX | | Surgical & Medical Instruments & Apparatus | 10456 |
| BAYA | | Blank Checks | 1969475 |
| BB | | Services-Prepackaged Software | 1070235 |
| BBAI | | Services-Prepackaged Software | 1836981 |
| BBAR | | Commercial Banks, NEC | 913059 |
| BBBMF | | - | 1829809 |
| BBBY | | Retail-Catalog & Mail-Order Houses | 1130713 |
| BBCP | | Construction - Special Trade Contractors | 1703956 |
| BBD | | State Commercial Banks | 1160330 |
| BBDC | | - | 1379785 |
| BBGI | | Radio Broadcasting Stations | 1099160 |
| BBIO | | Pharmaceutical Preparations | 1743881 |
| BBLG | | Orthopedic, Prosthetic & Surgical Appliances & Supplies | 1419554 |
| BBLR | | Services-Computer Programming, Data Processing, Etc. | 1873722 |
| BBN | | - | 1493683 |
| BBNX | | Surgical & Medical Instruments & Apparatus | 1674632 |
| BBOT | | Pharmaceutical Preparations | 1869105 |
| BBSI | | Services-Help Supply Services | 902791 |
| BBT | | Savings Institutions, Not Federally Chartered | 1108134 |
| BBU | | Construction - Special Trade Contractors | 1654795 |
| BBUC | | Construction - Special Trade Contractors | 1871130 |
| BBVA | | Commercial Banks, NEC | 842180 |
