| MXL | MaxLinear, Inc. | Technology | $7.7B | — | 0 |
| MAMK | MaxsMaking Inc. Class A Ordinary Shares | Industrials | $121M | — | 0 |
| MINE | Mayfair Gold Corp. | Basic Materials | $184M | — | 0 |
| MEC | Mayville Engineering Company, Inc. | Industrials | $352M | — | 0 |
| MYXXU | Maywood Acquisition Corp. | — | — | — | 0 |
| MAZE | Maze Therapeutics, Inc. | Healthcare | $1.5B | — | 0 |
| MBI | MBIA Inc. | Financial Services | $226M | — | 0 |
| MBAI | MBody AI Ltd. | Healthcare | $4.5M | — | 0 |
| MBRFY | MBRF Global Foods Company S.A. | Consumer Defensive | $4.5B | — | 0 |
| MBX | MBX Biosciences, Inc. Common Stock | Healthcare | $2.6B | — | 0 |
| MCFN | McCarthy Finney, Inc. | — | — | — | 0 |
| MKC-V | McCormick & Company, Incorporated | Consumer Defensive | $13.1B | — | 0 |
| MCD | McDonald's Corporation | Consumer Cyclical | $168B | — | 0 |
| MUX | McEwen Mining Inc. | Basic Materials | $1.1B | — | 0 |
| MGRC | McGrath RentCorp | Industrials | $2.7B | — | 0 |
| MH | McGraw Hill, Inc. | Consumer Defensive | $2.6B | — | 0 |
| MCK | McKesson Corporation | Healthcare | $102B | — | 0 |
| MKLYR | McKinley Acquisition Corporation | — | — | — | 0 |
| MDA | MDA Space Ltd | Industrials | $5.1B | — | 0 |
| MDBH | MDB Capital Holdings, LLC Class A common | Financial Services | $26.0M | — | 0 |
| UOKAF | MDJM Ltd | — | — | — | 0 |
| MDU | MDU Resources Group, Inc. | Utilities | $3.9B | — | 0 |
| MDWK | MDwerks, Inc. | Consumer Defensive | $16.5M | — | 0 |
| MDXH | MDxHealth S.A. | Healthcare | $29.9M | — | 0 |
| MCHB | Mechanics Bank | Financial Services | $3.3B | — | 0 |