M ETFs
- MBB - iShares Barclays MBS Bond Fund
- MBG - SPDR Barclays Capital Mortgage Backed Bond ETF
- MCRO - IQ Hedge Macro Tracker ETF
- MDD - SPDR S&P International Mid Cap ETF
- MDY - SPDR MidCap Trust Series I
- MES - Market Vectors Gulf States Index ETF
- MGC - Vanguard Mega Cap 300 ETF
- MGK - Vanguard Mega Cap 300 Growth
- MGV - Vanguard Mega Cap 300 Value
- MINT - PIMCO Enhanced Short Maturity Strategy Fund
- MKH - HOLDRS Market 2000+
- MLN - Market Vectors-Long Municipal Index ETF
- MNA - IQ ARB Merger Arbitrage ETF
- MOO - Market Vectors-Agribusiness ETF
- MTK - SPDR MS Technology
- MUAA - iShares 2012 S&P AMT-Free Municipal Series
- MUAB - iShares 2013 S&P AMT-Free Municipal Series
- MUAC - iShares 2014 S&P AMT-Free Municipal Series
- MUAD - iShares 2015 S&P AMT-Free Municipal Series
- MUAE - iShares 2016 S&P AMT-Free Municipal Series
- MUAF - iShares 2017 S&P AMT-Free Municipal Series
- MUB - iShares S&P National Municipal Bond Fund
- MUNI - PIMCO Intermediate Municipal Bond Strategy Fund
- MVV - ProShares Ultra MidCap400
- MWJ - Direxion Mid Cap Bull 3X Shares
- MWN - Direxion Mid Cap Bear 3X Shares
- MXI - iShares S&P Global Materials Sector Index Fund
- MYY - ProShares Short MidCap400
- MZG - Claymore/Morningstar Manufacturing Super Sector Index ETF
- MZN - Claymore/Morningstar Information Super Sector Index Fund
- MZO - Claymore/Morningstar Services Super Sector Index ETF
- MZZ - ProShares UltraShort MidCap400
