| NBXG | | - | 1843181 |
| NBY | | Pharmaceutical Preparations | 1389545 |
| NC | | Bituminous Coal & Lignite Surface Mining | 789933 |
| NCA | | - | 818851 |
| NCDL | | - | 1737924 |
| NCEL | | Pharmaceutical Preparations | 1783036 |
| NCEW | | Arrangement of Transportation of Freight & Cargo | 1968043 |
| NCI | | Apparel & Other Finishd Prods of Fabrics & Similar Matl | 1916331 |
| NCIQ | | Commodity Contracts Brokers & Dealers | 2031069 |
| NCL | | Plastics Products, NEC | 1923780 |
| NCLH | | Water Transportation | 1513761 |
| NCMI | | Services-Advertising | 1377630 |
| NCNA | | Pharmaceutical Preparations | 1709626 |
| NCNCF | | Miscellaneous Electrical Machinery, Equipment & Supplies | 1964021 |
| NCNO | | Services-Prepackaged Software | 1902733 |
| NCPL | | Finance Services | 1414767 |
| NCRA | | Agricultural Prod-Livestock & Animal Specialties | 1756180 |
| NCSM | | Oil & Gas Field Services, NEC | 1692427 |
| NCT | | Deep Sea Foreign Transportation of Freight | 2018529 |
| NCTY | | Finance Services | 1296774 |
| NCV | | - | 1214935 |
| NCZ | | - | 1227857 |
| NDAQ | | Security & Commodity Brokers, Dealers, Exchanges & Services | 1120193 |
| NDLS | | Retail-Eating Places | 1275158 |
| NDMO | | - | 1793129 |
| NDRA | | Electromedical & Electrotherapeutic Apparatus | 1681682 |
| NDSN | | General Industrial Machinery & Equipment, NEC | 72331 |
| NE | | Drilling Oil & Gas Wells | 1895262 |
| NEA | | - | 1195737 |
| NECB | | Savings Institutions, Not Federally Chartered | 1847398 |
| NEE | | Electric Services | 753308 |
| NEGG | | Retail-Retail Stores, NEC | 1474627 |
| NELR | | General Bldg Contractors - Residential Bldgs | 1941360 |
| NEM | | Gold and Silver Ores | 1164727 |
| NEN | | Operators of Apartment Buildings | 746514 |
| NEO | | Services-Testing Laboratories | 1077183 |
| NEOG | | In Vitro & In Vivo Diagnostic Substances | 711377 |
| NEON | | Electronic Components, NEC | 87050 |
| NEOV | | Miscellaneous Electrical Machinery, Equipment & Supplies | 1748137 |
| NEPH | | Surgical & Medical Instruments & Apparatus | 1196298 |
| NERV | | Pharmaceutical Preparations | 1598646 |
| NESR | | Oil & Gas Field Services, NEC | 1698514 |
| NET | | Services-Prepackaged Software | 1477333 |
| NETD | | Blank Checks | 1975218 |
| NEU | | Industrial Organic Chemicals | 1282637 |
| NEUE | | Hospital & Medical Service Plans | 1671284 |
| NEUP | | Pharmaceutical Preparations | 1191070 |
| NEWH | | Unsupported Plastics Film & Sheet | 1371128 |
| NEWP | | Gold and Silver Ores | 1369085 |
| NEWT | | National Commercial Banks | 1587987 |
