| MARA | Marathon Patent Group, Inc. | 30.03 | Financial Services | Stocks | NCM |
| MAR | Marriott International | 146.92 | Consumer Cyclical | Stocks | NMS |
| MARK | Remark Holdings, Inc. | 2.31 | Communication Services | Stocks | NCM |
| MNRL | Brigham Minerals, Inc. | 15.92 | Energy | Stocks | NYQ |
| MRLN | Marlin Business Services Corp. | 16.47 | Financial Services | Stocks | NMS |
| MMM.AX | MARLEYSPN CDI1000:1 | 2.65 | Consumer Cyclical | Stocks | ASX |
| ARL | American Realty Investors, Inc. | 10.25 | Real Estate | Stocks | NYQ |
| MVRL | MVRL | 27.88 | N/A | Stocks | NYQ |
| MVRL | ETRACS Monthly Pay 1.5X Leverag | 43.28 | N/A | ETF | PCX |
| MAAL | MARKETING ALLIANCE INC | 2.88 | Financial Services | Stocks | PNK |
| FINMU | Marlin Technology Corporation | 10.25 | Financial Services | Stocks | NCM |
| MORL | MORL | N/A | N/A | ETF | PCX |
| MLN.NZ | Marlin Global Limited Ordinary | 1.30 | Financial Services | Stocks | NZE |
| HARL | HARLEYSVILLE FINANCIAL CORP | 24.11 | Financial Services | Stocks | PNK |
| MRL.L | MARLOWE PLC ORD 50P | 691.00 | Industrials | Stocks | LSE |
| MARZ | MARZ | 24.34 | N/A | Stocks | NYQ |
| MARZ | MARZ | 24.74 | N/A | ETF | BTS |
| MRRL | MRRL | N/A | N/A | ETF | PCX |
| MARB | MARB | 20.04 | N/A | Stocks | NYQ |
| MARB | First Trust Merger Arbitrage ET | 19.49 | N/A | ETF | PCX |
| MWE.NZ | Marlborough Wine Estates Group | 0.62 | Consumer Defensive | Stocks | NZE |
| MALL | MALL | 0.00 | N/A | Stocks | NGM |
| 0P0000XT8B.L | Marlborough European Multi-Cap | 664.79 | N/A | Mutual Fund | LSE |
| MARLX | MFS Arkansas Municipal Bond Fun | 9.97 | N/A | Mutual Fund | NAS |
| MCRL | MCRL | N/A | N/A | Stocks | NMS |