| MEOH | Methanex Corporation | Basic Materials | $4.6B | — | 0 |
| MEI | Methode Electronics, Inc. | Technology | $516M | — | 0 |
| MTBOY | Metis TechBio Co Ltd/ADR | — | — | — | 0 |
| MTLPF | Metlen Energy & Metals PLC/ADR | — | — | — | 0 |
| MET-PF | MetLife, Inc. | Financial Services | $60.1B | — | 0 |
| METRY | METRO INC./ADR | — | — | — | 0 |
| MCBS | MetroCity Bankshares, Inc. | Financial Services | $997M | — | 0 |
| MCB | Metropolitan Bank Holding Corp. | Financial Services | $1.1B | — | 0 |
| MTD | Mettler-Toledo International Inc. | Healthcare | $30.7B | — | 0 |
| MXC | Mexco Energy Corporation | Energy | $22.1M | — | 0 |
| MXE | Mexico Equity & Income Fund Inc. | Financial Services | $56.8M | — | 0 |
| MFI | mF International Limited | Technology | $15.9M | — | 0 |
| MFA-PC | MFA Financial, Inc. | Real Estate | $886M | — | 0 |
| MGEE | MGE Energy, Inc. | Utilities | $2.6B | — | 0 |
| MTG | MGIC Investment Corporation | Financial Services | $5.9B | — | 0 |
| MGM | MGM Resorts International | Consumer Cyclical | $8.5B | — | 0 |
| MGPI | MGP Ingredients, Inc. | Consumer Defensive | $273M | — | 0 |
| MGTI | MGT Capital Investments, Inc. | Financial Services | $7.5M | — | 0 |
| MTGRF | MGX Resources Limited | Basic Materials | $305M | — | 0 |
| MIBE | Miami Breeze Car Care Inc. | — | — | — | 0 |
| MIAX | Miami International Holdings, Inc. | Financial Services | $3.4B | — | 0 |
| VENAF | MicroAlgo Inc. | — | — | — | 0 |
| MALG | Microalliance Group Inc. | — | — | — | 0 |
| MBOT | Microbot Medical Inc. | Healthcare | $59.7M | — | 0 |
| MCHPP | Microchip Technology Incorporated | — | — | — | 0 |