- MGTEW — Marblegate Capital Corporation
- MGTI — MGT Capital Investments, Inc.
- MGTX — MeiraGTx Holdings plc
- MGU.AX — Magnum Mining and Exploration Limited
- MGUY — Mogul Energy International, Inc.
- MGV — Vanguard Mega Cap Value ETF
- MGWFF — Maple Leaf Green World Inc.
- MGX — Metagenomi, Inc. Common Stock
- MGX.AX — MGX Resources Limited.
- MGXMF — MGX Minerals Inc.
- MGY — Magnolia Oil & Gas Corporation
- MGYOY — MOL Magyar Olaj- és Gázipari Nyilvánosan Muködo Részvénytársaság
- MGYR — Magyar Bancorp, Inc.
- MH — McGraw Hill, Inc.
- MHC-U.TO — Flagship Communities Real Estate Investment Trust
- MHC-UN.TO — Flagship Communities Real Estate Investment Trust
- MHC.AX — Manhattan Corporation Limited
- MHCUF — Flagship Communities Real Estate Investment Trust
- MHGU — Meritage Hospitality Group Inc.
- MHGUP — Meritage Hospitality Group Inc. PFD CV SER B
- MHGVY — Mowi ASA
- MHH — Mastech Digital, Inc.
- MHHC — MHHC Enterprises Inc.
- MHIG — Milliman Healthcare Inflation Guard ETF
- MHIP — Milliman Healthcare Inflation Plus ETF
- MHIVF — Invesque Inc.
- MHJ.AX — Michael Hill International Limited
- MHK — Mohawk Industries, Inc.
- MHK.AX — Metal Hawk Limited
- MHLA — Maiden Holdings, Ltd. 6.625 NT 2046
- MHNC — Maiden Holdings North America, Ltd.
- MHO — M/I Homes, Inc.
- MHPC — Manufactured Housing Properties Inc.
- MHPSY — MHP SE
- MHSDF — Megacable Holdings, S. A. B. de C. V.
- MHTX — Manhattan Scientifics, Inc.
- MHTZF — Manhattan Corporation Limited
- MHUAF — Meihua International Medical Technologies Co., Ltd.
- MHUB.V — Minehub Technologies Inc.
- MHUBF — Minehub Technologies Inc.
- MHVYF — Mitsubishi Heavy Industries, Ltd.
- MHY — Man Active High Yield ETF
- MHYB.NE — MACKENZIE GLOBAL HIGH YIELD FIXED INCOME ETF
- MI — NFT Limited
- MI6.AX — Minerals 260 Limited
- MIACU — Meridian3 Industrials Acquisition Corp
- MIAX — MIAMI INTERNATIONAL HOLDINGS, INC.
- MICC — The Magnum Ice Cream Company N.V.
- MICH.AX — Magellan Infrastructure
- MICLF — Mycronic AB (publ)
- MICR — Micron Solutions, Inc.
- MID — American Century Mid Cap Growth Impact ETFAmerican Century Mid Cap Growth Impact ETFAmerican Century Mid Cap Growth Impact ETF
- MIDD — The Middleby Corporation
- MIDE — Xtrackers S&P MidCap 400 Scored & Screened ETF
- MIDLF — Midland Exploration Inc.
- MIDU — Direxion Daily Mid Cap Bull 3X Shares
- MIELF — Mitsubishi Electric Corporation
- MIELY — Mitsubishi Electric Corporation
- MIESF — Mitsui E&S Holdings Co., Ltd.
- MIESY — Mitsui E&S Holdings Co., Ltd.
- MIG — VanEck Moody’s Analytics IG Corporate Bond ETF
- MIGO — MIG Core ETF
- MIHDF — MISC Berhad
- MIHL — Montague International Holding Ltd.
- MILC — Millennium Sustainable Ventures Corp.
- MILFF — 1CM Inc.
- MILN — Global X - Millennial Consumer ETF
- MIMI — Mint Incorporation Limited
- MIMTF — Mitsubishi Materials Corporation
- MIN.AX — Mineral Resources Limited
- MIND — MIND Technology, Inc.
- MINE — Mayfair Gold Corp.
- MINN — Mairs & Power Minnesota Municipal Bond ETF
- MINN.NE — MIDDLEFIELD INNOVATION DIVIDEND ETF
- MINO — PIMCO Municipal Income Opportunities Active Exchange-Traded Fund
- MINOF — Minor International Public Company Limited
- MINT — PIMCO Enhanced Short Maturity Active Exchange-Traded Fund
- MINT.TO — Manulife Multifactor Developed International Index ETF
- MINV — Matthews Asia Innovators Active ETF MINV
- MINY — YieldMax Strategic Metals & Mining Portfolio Option Income ETF
- MIO.AX — Macarthur Minerals Limited
- MIR — Mirion Technologies, Inc.
- MIR.AX — Mirrabooka Investments Limited
- MIR.V — MedMira Inc.
- MIRA — MIRA Pharmaceuticals, Inc.
- MIRM — Mirum Pharmaceuticals, Inc.
- MIRXF — Serrano Resources Ltd.
- MISL — First Trust Indxx Aerospace & Defense ETF
- MIST — Milestone Pharmaceuticals Inc.
- MISVF — Minco Silver Corporation
- MITEF — Mitsubishi Estate Co., Ltd.
- MITEY — Mitsubishi Estate Co., Ltd.
- MITFF — Mitie Group plc
- MITFY — Mitie Group plc
- MITI — Mitesco, Inc.
- MITJF — The Mint Corporation
- MITK — Mitek Systems, Inc.
- MITN — TPG Mortgage Investment Trust Inc 9.500% Senior Notes due 2029
- MITP — TPG Mortgage Investment Trust Inc 9.500% Senior Notes due 2029
