| Abbreviation | Definition |
|---|---|
| LYON | Liquid Yield Option Note |
| M | Mutual |
| MACE | MidAmerica Commodity Exchange |
| MAD | Mergers, Acquisitions, and Disposals |
| MAD | Money All Day |
| MAF | Millennium Access Fund |
| MAI | Mainly Aids Investors |
| MAI | Market for Alternative Investments |
| MAOF | Futures and Derivatives Market, Tel-Aviv |
| MAPP | Money Accelerated Profit Program |
| MAPS | Managed Assessment Portfolio System |
| MAR | Market Access Reporting |
| MAT | Moving Average Treasury |
| MATES | Mutual Assistance Trading Enterprise Scheme |
| MATIF | arché à Terme International de France |
| MAX | Midwest Automated Execution system |
| MCAP | Maintenance Condition Assessment Program |
| MCAP | Market Cap (Capitalization) |
| MCDR | Misr for Central Clearing, Depository, and Registry |
| MCG | Maximum Capital Gains |