- MEMS — Matthews Emerging Markets Discovery Active ETF MEMS
- MEMX — Matthews Emerging Markets ex China Active ETF MEMX
- MENE.V — Mene Inc.
- MENS — Jyong Biotech Ltd. Ordinary Shares
- MENT — Mentor Graphics Corp.
- MENV — AdvisorShares North Square McKee ESG Core Bond ETF
- MENYX — Madison Covered Call & Equity Income Fund Class Y
- MEOA — Minority Equality Opportunities Acquisition Inc.
- MEOAU — Minority Equality Opportunities Acquisition Inc.
- MEOAW — Minority Equality Opportunities Acquisition Inc.
- MEOH — Methanex Corporation
- MEP — Midcoast Energy Partners, L.P.
- MEQ.TO — Mainstreet Equity Corp.
- MER — Merrill Lynch & Co., Inc.
- MER-PK — Merrill Lynch Capital Trust I GTD CAP 6.45%
- MER.TO — Meren Energy Inc.
- MERAX — Madison Mid Cap Fund Class A
- MERC — Mercer International Inc.
- MERFX — The Merger Fund - Class A
- MERG.V — Metal Energy Corp.
- MERIX — The Merger Fund Institutional Class
- MERKX — Forum Funds - Merk Hard Currency Fund
- MESA — Mesa Air Group, Inc.
- MESH — Meshflow Acquisition Corp.
- MESHU — Meshflow Acquisition Corp.
- MESHW — Meshflow Acquisition Corp. Warrants
- MESO — Mesoblast Limited
- MET — MetLife, Inc.
- MET.V — Metalore Resources Limited
- META — Meta Platforms, Inc.
- METC — Ramaco Resources, Inc.
- METCB — Ramaco Resources, Inc.
- METCL — Ramaco Resources, Inc. - 9.00%
- METCZ — Ramaco Resources, Inc.
- METD — Direxion Daily META Bear 1X Shares
- METL — Sprott Active Metals & Miners ETF
- METR — Metro Bancorp, Inc
- METU — Direxion Daily META Bull 2X Shares
- METV — Roundhill Investments - Metaverse ETF
- METX — Meten Holding Group Ltd.
- METXW — Meten EdtechX Education Group Ltd.
- MEU.TO — Mackenzie Maximum Diversification Developed Europe Index ETF
- MEUSW — 23andMe Holding Co.
- MEVO — M Evo Global Acquisition Corp II Class A Ordinary Shares
- MEVOU — M Evo Global Acquisition Corp II Units
- MEVOW — M Evo Global Acquisition Corp II
- MEVOX — The Lazard Funds, Inc. - Lazard Managed Equity Volatility Portfolio
- MEX.V — Mexican Gold Mining Corp.
- MEXX — Direxion Daily MSCI Mexico Bull 3X Shares
- MF — Missfresh Limited
- MFA — MFA Financial, Inc.
- MFAEX — American Funds Mortgage F1
- MFAIX — Morgan Stanley Insti Fd International Advantage Port Cl I
- MFAN — MFA Financial, Inc. 8.875% Senior Notes
- MFAO — MFA Financial, Inc. 9.000% Senior Notes
- MFAPX — MSIF International Advantage Portfolio Class A
- MFC — Manulife Financial Corporation
- MFC-PB.TO — Manulife Financial Corp
- MFC-PC.TO — Manulife Financial Corporation
- MFC-PM.TO — Manulife Financial Corp
- MFC.TO — Manulife Financial Corporation
- MFCAX — Meridian Contrarian Fund
- MFCCX — Meridian Contrarian Fund
- MFCIX — Meridian Contrarian Fund Investor Class
- MFD — Macquarie/First Trust Global Infrastructure/Utilities Dividend & Income Fund
- MFDAX — AMG GW&K Enhanced Core Bond ESG Fund Class - N
- MFDX — PIMCO RAFI Dynamic Multi-Factor International Equity ETF
- MFEGX — MFS Growth Fund Class A
- MFEIX — MFS Growth Fund
- MFEJX — MFS Growth R4
- MFEKX — MFS Growth R6
- MFEM — PIMCO RAFI Dynamic Multi-Factor Emerging Markets Equity ETF
- MFG — Mizuho Financial Group, Inc.
- MFG.V — Mayfair Gold Corp.
- MFGP — Micro Focus International plc
- MFH — Mercurity Fintech Holding Inc.
- MFI — mF International Limited
- MFI.TO — Maple Leaf Foods Inc.
- MFIC — MidCap Financial Investment Corporation
- MFICL — MidCap Financial Investment Corporation 8.00% Notes due 2028
- MFIG — Motley Fool Innovative Growth ETF
- MFIN — Medallion Financial Corp.
- MFIOX — MFS Income Fund - Class A
- MFL — BlackRock MuniHoldings Investment Quality Fund
- MFL.V — Mawson Finland Ltd.
- MFLA — iPath Long Enhanced MSCI EAFE ETN
- MFLX — First Trust Flexible Municipal High Income ETF
- MFM — MFS Municipal Income Trust
- MFMO — Motley Fool Momentum Factor ETF
- MFMPX — Morgan Stanley Institutional Fund, Inc. Next Gen Emerging Markets Portfolio
- MFNC — Mackinac Financial Corporation
- MFOCX — Marsico Focus Fund
- MFOIX — BNY Mellon Focused Equity Opportunities Fund Investor Shares
- MFOMX — BNY Mellon Focused Equity Opportunities Fund
- MFP — Midera Food Processing, Inc.
- MFPVV — Midera Food Processing, Inc.
- MFQAX — AMG Veritas Global Focus Fund - Class N
- MFR-UN.TO — Manulife Floating Rate Senior Loan Fund
- MFRFX — Massachusetts Financial Research Fund A
- MFT.TO — Mackenzie Floating Rate Income ETF
