| MMP Industries Limited (MMP) NSE - National Stock Exchange of India | |
| Merida Merger Corp. I (MCMJ) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Medallion Bank (MBNKP) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Mosaic Acquisition Corp. (MOSC.U) NYSE - The New York Stock Exchange | |
| Mosaic Acquisition Corp. (MOSC.WS) NYSE - The New York Stock Exchange | |
| MuniVest Fund, Inc. (MVF) NYSE - The New York Stock Exchange | |
| MuniYield Arizona Fund, Inc. (MZA) NYSE - The New York Stock Exchange | |
| MVC Capital, Inc. (MVCD) NYSE - The New York Stock Exchange | |
| Maverix Metals Inc. (MMX) NYSEAMERICAN - NYSE American | |
| MRI Interventions, Inc. (MRIC) NYSEAMERICAN - NYSE American | |
| Merida Merger Corp. I (MCMJU) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Morgan Stanley (MS^G.CL) NYSE - The New York Stock Exchange | |
| Morgan Stanley (MS^L) NYSE - The New York Stock Exchange | |
| MFA Financial, Inc. (MFA^C) NYSE - The New York Stock Exchange | |
| McKesson Corporation (MCK.WD) NYSE - The New York Stock Exchange | |