| MNTS | | Guided Missiles & Space Vehicles & Parts | 1781162 |
| MNY | | Services-Business Services, NEC | 1974044 |
| MO | | Cigarettes | 764180 |
| MOB | | Aircraft | 1898643 |
| MOBQ | | Services-Advertising | 1084267 |
| MOBX | | Semiconductors & Related Devices | 1855467 |
| MOD | | Motor Vehicle Parts & Accessories | 67347 |
| MODD | | Surgical & Medical Instruments & Apparatus | 1074871 |
| MODG | | Sporting & Athletic Goods, NEC | 837465 |
| MODVQ | | Transportation Services | 1220754 |
| MOFG | | State Commercial Banks | 1412665 |
| MOG | | Misc Industrial & Commercial Machinery & Equipment | 67887 |
| MOGMF | | - | 2011589 |
| MOGO | | Finance Services | 1602842 |
| MOGU | | Services-Business Services, NEC | 1743971 |
| MOH | | Hospital & Medical Service Plans | 1179929 |
| MOJO | | Beverages | 1414953 |
| MOLN | | Biological Products, (No Diagnostic Substances) | 1745114 |
| MOMO | | Services-Prepackaged Software | 1610601 |
| MORN | | Investment Advice | 1289419 |
| MOS | | Agricultural Chemicals | 1285785 |
| MOV | | Watches, Clocks, Clockwork Operated Devices/Parts | 72573 |
| MOVE | | Services-Computer Processing & Data Preparation | 1734750 |
| MP | | Metal Mining | 1801368 |
| MPA | | - | 891038 |
| MPAA | | Motor Vehicle Parts & Accessories | 918251 |
| MPB | | State Commercial Banks | 879635 |
| MPC | | Petroleum Refining | 1510295 |
| MPJS | | Retail-Jewelry Stores | 2016864 |
| MPLT | | Pharmaceutical Preparations | 1770069 |
| MPLX | | Pipe Lines (No Natural Gas) | 1552000 |
| MPTI | | Electronic Components, NEC | 1902314 |
| MPU | | Services-Motion Picture & Video Tape Production | 1953021 |
| MPV | | - | 831655 |
| MPW | | Real Estate Investment Trusts | 1287865 |
| MPWR | | Semiconductors & Related Devices | 1280452 |
| MPX | | Ship & Boat Building & Repairing | 1129155 |
| MQ | | Services-Prepackaged Software | 1522540 |
| MQT | | 0000 | 887394 |
| MQY | | 0000 | 890196 |
| MRAI | | Services-Misc Health & Allied Services, NEC | 1844392 |
| MRAM | | Semiconductors & Related Devices | 1438423 |
| MRBK | | National Commercial Banks | 1750735 |
| MRCA | | Commodity Contracts Brokers & Dealers | 2083119 |
| MRCC | | - | 1512931 |
| MRCY | | Electronic Components & Accessories | 1049521 |
| MREO | | Pharmaceutical Preparations | 1719714 |
| MRK | | Pharmaceutical Preparations | 310158 |
| MRKR | | Pharmaceutical Preparations | 1094038 |
| MRM | | Services-Personal Services | 1819704 |
