| M | Macy's, Inc. | MGM | MGM Mirage | MR | Mindray Medical International Limited |
| MA | Mastercard Incorporated | MGN | Mines Management Inc. | MRCY | Mercury Computer Systems, Inc. |
| MAA | Mid-America Apartment Communities Inc. | MGPI | MGP Ingredients Inc. | MRF | American Income Fund Inc. |
| MAB | EATON VANCE INS MA MUNI BD SBIMAB | MGRC | McGrath Rentcorp | MRGE | Merge Healthcare Incorporated. |
| MAC | Macerich Co. | MGRM | Monogram Biosciences, Inc. | MRH | Montpelier Re Holdings Ltd. |
| MACC | MACC Private Equities | MGS | MetroGAS S.A. | MRIB | Marani Brands |
| MACE | Mace Security International Inc. | MGT | MGT Capital Investments, Inc. | MRK | Merck & Co. Inc. |
| MAD | Madeco S.A. | MGU | Macquarie Global Infrastructure Total Return Fund Inc. | MRLN | Marlin Business Services Corp. |
| MAF | PIMCO Municipal Advantage Fund, Inc. | MGV | Vanguard Mega Cap 300 Value Index | MRM | Merrimac Industries Inc. |
| MAG | Magnetek Inc. | MGYR | Magyar Bancorp, Inc. | MRNA | MDRNA, Inc. |
| MAGS | Magal Security Systems Ltd. | MHD | Blackrock MuniHoldings Fund, Inc. | MRO | Marathon Oil Corporation |
| IncrediMail, Ltd. | MHE | BlackRock Massachusetts Health and Education Tax-Exempt Trust | MROE | Monroe Bancorp | |
| MAIN | Main Street Capital Corporation | MHF | Western Asset Municipal High Income Fund Inc. | MRT | Morton's Restaurant Group Inc. |
| MAJC | Majestic Capital | MHGC | Morgans Hotel Group Co. | MRTN | Marten Transport Ltd. |
| MAKO | MAKO Surgical Corp. | MHH | Mastech Holdings, Inc. | MRVL | Marvell Technology Group Ltd. |
| MALL | PC Mall Inc. | MHI | Pioneer Municipal High Income Trust | MRX | Medicis Pharmaceutical Corp. |
| MAM | Maine & Maritimes Corp. | MHJ | Man Sang Holdings, Inc. | MS | Morgan Stanley |
| MAN | Manpower Inc. | MHK | Mohawk Industries Inc. | MSA | Mine Safety Appliances Co. |
| MANH | Manhattan Associates, Inc. | MHLD | Maiden Holdings, Ltd. | MSB | Mesabi Trust |
| MANT | ManTech International Corp. | MHN | BlackRock MuniHoldings New York Insured Fund, Inc. | MSBF | MSB Financial Corp. |
| MAO | ML Aclrtd Return Nts Lkd MSCI EAFE Idx | MHO | M/I Homes, Inc. | MSCC | Microsemi Corp. |
| MAPP | MAP Pharmaceuticals, Inc. | MHP | The McGraw-Hill Companies, Inc. | MSCS | MSC Software Corp. |
| MAR | Marriott International, Inc. | MHR | Merrill Lynch | MSD | Morgan Stanley Emerging Markets Debt Fund Inc. |
| MARPS | Marine Petroleum Trust | MHS | MedcoHealth Solutions Inc. | MSDXP | Mason-Dixon Capital Trust |
| MAS | Masco Corp. | MHT | MORGAN STAN MPS LNK TECH INDX | MSEX | Middlesex Water Co. |
| MASI | Masimo Corporation | MHU | ML Aclrtd Rtrn Nts Lnkd MSCI EAFE Index | MSF | Morgan Stanley Emerging Markets Fund Inc. |
| MAT | Mattel Inc. | MHW | Bnk of Amrc Crp MITTS lnkd Dow Jones Ind | MSFG | Mainsource Financial Group |
| MATK | Martek Biosciences Corp. | MHY | Western Asset Managed High Income Fund Inc. | MSFT | Microsoft Corporation |
| MATW | Matthews International Corporation | MI | Marshall & Ilsley Corporation | MSG | Madison Sqr Grdn |
| MAV | Pioneer Municipal High Income Advantage Trust | MIB | MS 3 IDX CPN'S | MSGNV | Madison Square Garden Inc |
| MAXY | Maxygen, Inc. | MIC | Macquarie Infrastructure Company LLC | MSHL | Marshall Edwards Inc. |
| MAY | Malaysia Fund Inc. | MICC | Millicom International Cellular SA | MSII | Media Sciences International Inc. |
| MAYS | JW Mays Inc. | MIDD | Middleby Corp. | MSJ | MORGAN STANLEY CP VI |
| MBA | CIBT Education Group Inc. | MIF | Merrill Lynch | MSK | Morgan Stanley Capital Trust VIII |
| MBB | iShares Lehman MBS | MIG | Meadowbrook Insurance Group Inc. | MSL | Midsouth Bancorp Inc. |
| MBFI | MB Financial Inc. | MIGP | Mercer Insurance Group Inc. | MSM | MSC Industrial Direct Co. Inc. |
| MBG | SPDR Barclays Captl Mortgage Backd Bond | MIL | Millipore Corp. | MSN | Emerson Radio Corp. |
| MBHI | Midwest Banc Holdings Inc. | MIM | MI Developments Inc. | MSNQ | Morgan Stanley |
| MBHIP | Midwest Banc Holdings Inc | MIN | MFS Intermediate Income Trust | MSO | Martha Stewart Living Omnimedia Inc. |
| MBI | MBIA Inc. | MIND | Mitcham Industries Inc. | MSON | Misonix Inc. |
| MBJ | STARS BASED ON THE CBOE S&P 50 | MINI | Mobile Mini, Inc. | MSP | Madison Strategic Sector Premium Fund |
| MBK | BRDGS 15 FNCL ST | MINT | PIMCO Enhanced Short Mat Stgy Fd | MSPD | Mindspeed Technologies Inc. |
| MBLX | Metabolix, Inc. | MIPI | Molecular Insight Pharmaceuticals, Inc. | MSPX | MERRILL LYNCH S&P 500 MITTS 10 |
| MBND | Multiband Corporation | MIPS | MIPS Technologies Inc. | MSS | Merrill Lynch |
| MBR | Mercantile Bancorp Inc. | MIR | Mirant Corporation | MSSR | McCormick & Schmick's Seafood Restaurants, Inc. |
| MBRG | Middleburg Financial Corporation | MIS | AB Svnsk Ekprtkdt Actd Rtn Nt MSCI Mt Ix | MST | MS Cptl Prtctd Nts Bsd on S&PMdcp400Indx |
| MBRK | MiddleBrook Pharmaceuticals, Inc. | MITI | Micromet, Inc. | MSTR | MicroStrategy Inc. |
| MBRX | Metabasis Therapeutics Inc. | MITL | Mitel Networks | MSU | MORGAN STAN MIPS RUS2000 08 |
| MBS | MORGAN STAN CBOE/S&P 500 09 | MITSY | Mitsui & Co | MSW | Mission West Properties Inc. |
| MBT | Mobile Telesystems OJSC | MIW | Eaton Vance Insured Michigan Municipal Bond Fund | MSY | Morgan Stanley High Yield Fund Inc. |
| MBTF | MBT Financial Corp. | MIX | ML 10% Cllbl STRIDES Lnkd Exxn Mbl Corp | MSZ | Morgan Stanley Capital Trust VII |
| MBVA | Millenium Bnkshr | MIY | BlackRock MuniYield Michigan Insured Fund, Inc. | MT | Arcelor Mittal |
| MBVT | Merchants Bancshares Inc. | MJF | MSDW SATURNS CUM 01-4 CALL UTS | MTA | Magyar Telekom Telecommunications Public Limited Company |
| MBWM | Mercantile Bank Corp. | MJH | SATURNS BK OF AM | MTB | M&T Bank Corp. |
| MCA | BlackRock MuniYield California Insured F | MJI | BlackRock Muniyield New Jersey Insured Fund, Inc. | MTD | Mettler-Toledo International, Inc. |
| MCB | MS MIDCAP 400 | MJN | Mead Johnson Nutrition Company | MTE | Mahanagar Telephone Nigam Ltd. |
| MCBC | Macatawa Bank Corp. | MJP | MORGAN STAN NIK225 MKT PART 10 | MTEX | Mannatech Inc. |
| MCBF | Monarch Community Bancorp Inc. | MJT | SATURNS DPL CAP | MTG | MGIC Investment Corp. |
| MCBI | Metrocorp Bancshares Inc. | MJV | MSDW SATURNS 8.00 DPL 02-4 CLA | MTH | Meritage Homes Corporation |
| MCCC | Mediacom Communications Corp. | MJY | MSDW SATURNS 7.875 DPL 2002-7 | MTK | SPDR MS TECH |
| MCD | McDonald's Corp. | MKC | McCormick & Co. Inc. | MTL | Mechel OAO |
| MCF | Contango Oil & Gas Co. | MKCV | MCCORMICK & CO INC COM VTG | MTLK | Metalink, Ltd. |
| MCGC | MCG Capital Corporation | MKE | MSCI EAFE CAPPED LIR | MTLKD | Metalink Ltd |
| MCHP | Microchip Technology Inc. | MKH | Market 2000+ HOLDRs Trust | MTMC | MTM Technologies Inc. |
| MCHX | Marchex, Inc. | MKI | ML CppdLvrgdIdxRtnNtsLkdMSCIEmrggMktsIdx | MTN | Vail Resorts Inc. |
| MCI | MassMutual Corporate Investors | MKL | Markel Corp. | MTNK | MERRILL LYNCH NIK 225 MITTS 10 |
| MCK | McKesson Corp. | MKO | ML DJIA MITTS | MTOX | MEDTOX Scientific Inc. |
| MCN | Madison/Claymore Covered Call & Equity Strategy Fund | MKP | ML S&P MKT IDX | MTP | MLP & Strategic Equity Fd Inc |
| MCO | Moody's Corp. | MKS | MSDW SATURNS 6.0 AIG 02 11 A | MTR | Mesa Royalty Trust Ubi |
| MCP | ML S&P 500 MITTS 09 | MKSI | MKS Instruments Inc. | MTRX | Matrix Service Co. |
| MCR | MFS Charter Income Trust | MKTAY | Makita Elec Works Ltd ADR | MTS | Montgomery Street Income Securities Inc. |
| MCRI | Monarch Casino & Resort Inc. | MKTX | MarketAxess Holdings Inc. | MTSC | MTS Systems Corp. |
| MCRL | Micrel Inc. | MKV | Markel Corp | MTSI | MTS Medication Technologies Inc. |
| MCRO | IQ Hedge Macro Tracker ETF | MKY | ML Accelerated Rt Nts MSCI EAFE | MTSL | MER Telemanagement Solutions Ltd. |
| MCRS | MICROS Systems, Inc. | MLA | MARKET INDEX MITTS | MTSLD | Mer Telemgt Sol |
| MCS | Marcus Corp. | MLAB | Mesa Laboratories Inc. | MTSM | MERRILL LYNCH S&P 500 MITTS 10 |
| MCY | Mercury General Corp. | MLB | ML Dow Jones EURO STOXX 50 Idx MITTS | MTSN | Mattson Technology Inc. |
| MCZ | Mad Catz Interactive Inc. | MLG | METLIFE INC 5.875 NTS 2033 | MTT | Western Asset Municipal Defined Opportun |
| MD | MEDNAX, Inc. | MLHR | Herman Miller Inc. | MTTT | Merrill Lynch & Co Inc |
| MDAS | MedAssets, Inc. | MLI | Mueller Industries Inc. | MTTX | MERRILL LYNCH & CO S&P 500 11 |
| MDC | MDC Holdings Inc. | MLM | Martin Marietta Materials Inc. | MTU | Mitsubishi UFJ Financial Group, Inc. |
| MDCA | MDC Partners Inc. | MLN | Market Vectors LB AMT-Free Lg Muncpl Idx | MTW | Manitowoc Co. Inc. |
| MDCI | Medical Action Industries Inc. | MLNK | ModusLink Global Solutions, Inc. | MTX | Minerals Technologies Inc. |
| MDCO | Medicines Co. | MLNX | Mellanox Technologies, Ltd. | MTXX | Matrixx Initiatives Inc. |
| MDD | SPDR S&P International Mid Cap | MLP | Maui Land & Pineapple Co. Inc. | MTZ | MasTec, Inc. |
| MDF | Metropolitan Health Networks Inc. | MLPI | UBS AG Jrsy Brch UBS ETRACS AlrnMLPInfra | MU | Micron Technology Inc. |
| MDH | MHI Hospitality Corp. | MLPN | Credit Suisse Cushing 30 MLP Index ETN | MUA | BlackRock MuniAssets Fund, Inc. |
| MDLK | Medialink Worldwide Inc. | MLR | Miller Industries Inc. | MUAA | iShares 2012 S&P AMT-Free Municipal Seri |
| MDM | Mountain Province Diamonds Inc. | MLV | ML Strtgc Rtrn Nts Lnkd Val Slct 30Inx | MUAB | iShares 2013 S&P AMT-Free Municipal Seri |
| MDNU | Medical Nutrition USA, Inc. | MLVF | Malvern Federal Bancorp, Inc. | MUAC | iShares 2014 S&P AMT-Free Municipal Seri |
| MDP | Meredith Corp. | MLW | M LYNCH S&P 500 MITTS 09 | MUAD | iShares 2015 S&P AMT-Free Municipal Seri |
| MDR | McDermott International Inc. | MMC | Marsh & McLennan Companies, Inc. | MUAE | iShares 2016 S&P AMT-Free Municipal Seri |
| MDRX | Allscripts-Misys Healthcare Solutions, Inc. | MMCE | MMC Energy, Inc. | MUAF | iShares 2017 S&P AMT-Free Municipal Seri |
| MDS | Midas Inc. | MMG | Metalline Mining Co. | MUB | iShares S&P National Municipal Bond Fund |
| MDSO | Medidata Solutions, Inc. | MMLP | Martin Midstream Partners LP | MUC | BlackRock MuniHoldings California Insured Fund, Inc. |
| MDT | Medtronic, Inc. | MMM | 3M Co. | MUE | BlackRock MuniHoldings Insured Fund II, Inc. |
| MDTH | MedCath Corp. | MMP | Magellan Midstream Partners LP | MUH | BlackRock MuniHoldings Fund II, Inc. |
| MDTL | Medis Technologies Ltd. | MMR | McMoRan Exploration Co. | MUI | BlackRock Muni Intermediate Duration Fund, Inc. |
| MDU | MDU Resources Group Inc. | MMS | MAXIMUS, Inc. | MUJ | BlackRock MuniHoldings New Jersey Insured Fund, Inc. |
| MDVN | Medivation, Inc. | MMSI | Merit Medical Systems Inc. | MUNI | PIMCO Intermediate Municpal Bd Strtgy Fd |
| MDW | Midway Gold Corp. | MMT | MFS Multimarket Income Trust | MUR | Murphy Oil Corporation |
| MDY | S&P Midcap Dep Recpts | MMU | Western Asset Managed Municipals Fund Inc. | MUS | BlackRock MuniHoldings Insured Fund, Inc. |
| MDZ | MDS, Inc. | MMUS | MakeMusic Inc. | MUSA | Metals USA Holdings Corp |
| ME | Mariner Energy, Inc. | MMV | Eaton Vance Massachusetts Municipal Income Trust | MV | Metavante Technologies, Inc. |
| MEA | Metalico Inc. | MMY | Bk of Amrc Crp Mkt Lkd Stp Up Nts Lkd S& | MVC | MVC Capital Inc. |
| MEAD | Meade Instruments Corp. | MNA | 1 IndexIQ IQ ARB Merger Arbitrage | MVF | BlackRock MuniVest Fund, Inc. |
| MEADD | Meade Instrum | MNC | Monaco Coach Corp | MVG | Mag Silver Corp. |
| MEAS | Measurement Specialties Inc. | MNDO | MIND C.T.I., Ltd. | MVI | ML Strtgc Ret Nts Lkd Value 30 Idx |
| MED | Medifast Inc. | MNE | BlackRock Muni New York Intermediate Duration Fund, Inc. | MVIS | Microvision Inc. |
| MEDQ | MedQuist Inc. | MNI | The McClatchy Company | MVL | Marvel Entertainment, Inc. |
| MEDW | Mediware Information Systems Inc. | MNK | MERRILL LYNCH NIK 225 MITTS09 | MVO | M V Oil Trust |
| MEDX | Medarex, Inc. | MNKD | MannKind Corp. | MVSN | Macrovision Solutions Corp. |
| MEE | Massey Energy Co. | MNL | ML MITTS Lnkd to the Nikkei-225 Stk Avg | MVT | BlackRock MuniVest Fund II, Inc. |
| MEG | Media General, Inc. | MNM | MS 12.5% SPARQS Lkd Target Corp | MVV | ULTRA MC400 PROSHRS |
| MEI | Methode Electronics Inc. | MNNY | MERRILL LYNCH & CO NIK MITTS11 | MW | Men's Wearhouse Inc. |
| MEJ | Santa Monica Media Corp | MNOV | MediciNova Inc. | MWA | Mueller Water Products, Inc. |
| MELA | Electro-Optical Sciences, Inc. | MNP | Western Asset Municipal Partners Fund Inc. | MWE | MarkWest Energy Partners LP |
| MELI | Mercadolibre, Inc. | MNR | Monmouth Real Est Inv Tr Sbi | MWG | MS CAP TR IV CAP SEC |
| MEMS | MEMSIC, Inc. | MNRK | Monarch Financial Holdings, Inc. | MWIV | MWI Veterinary Supply, Inc. |
| MEN | BlackRock MuniEnhanced Fund, Inc. | MNRKP | Monarch Financial Holdings Inc | MWL | ML Aclrtd Rtrn Nts Lnkd MSCI EAFE Idx |
| MEND | Micrus Endovascular Corp. | MNRO | Monro Muffler Brake Inc. | MWN | Mid Cap Bear 3X Shares |
| MENT | Mentor Graphics Corp. | MNRTA | Monmouth Real Estate Investment Corp. | MWO | MS CAPTL TR V |
| MEOH | Methanex Corp | MNRTP | MONMOUTH REAL ESTATE | MWR | MSDW CAP TR III 6.25 CAP SEC |
| MERC | Mercer International Inc. | MNTA | Momenta Pharmaceuticals Inc. | MWV | MeadWestvaco Corporation |
| MERR | Merriman Curhan Ford Group, Inc. | MNTG | MTR Gaming Group, Inc. | MWW | Monster Worldwide, Inc. |
| MERU | Meru Networks | MNTX | Manitex International, Inc. | MWY | Midway Gamings Inc |
| MERX | Merix Corp. | MO | Altria Group Inc. | MXA | Minnesota Muni Income Port |
| MES | Market Vectors Gulf States | MOC | Command Security Corp. | MXB | MSCI Inc. |
| MESA | Mesa Air Group Inc. | MOCO | MOCON Inc. | MXC | Mexco Energy Corporation |
| MET | MetLife, Inc. | MOD | Modine Manufacturing Co. | MXE | Mexico Equity & Income Fund Inc. |
| METR | Metro Bancorp, Inc. | MOFG | MidWest One Financial Group, Inc. | MXF | The Mexico Fund, Inc. |
| MF | MF Global Ltd | MOGA | Moog Inc. | MXGL | Max Capital Group Ltd. |
| MFA | MFA Financial, Inc. | MOGB | Moog Inc Class B | MXH | ML Strtgc Rtn Nts Lnkd Ml Lynch Fctr Mdl |
| MFB | Maidenform Brands Inc. | MOH | Molina Healthcare Inc. | MXI | iShares S&P Gbl Mtrls Sctr Indx Fnd |
| MFC | Manulife Financial Corporation | MOLX | Molex Inc. | MXIM | Maxim Integrated Products Inc. |
| MFD | Macquarie/First Trust Global Infrastructure/Utilities Dividend & | MOLXA | Molex Inc | MXL | MaxLinear Inc |
| MFE | McAfee, Inc. | MON | Monsanto Co. | MXM | Maxxam Inc |
| MFG | Mizuho Financial Group, Inc. | MOO | Mk Vector Agribs | MXN | FIRST AMER MN MUNI INCM FD II |
| MFI | MicroFinancial Inc. | MOR | MORGAN STAN CAP PROT S&P500 11 | MXT | Maxcom Telecomunicaciones S.A.B. de C.V. |
| MFL | BlackRock MuniHoldings Insured Investment Fund | MORN | Morningstar Inc. | MXWL | Maxwell Technologies Inc. |
| MFLR | Mayflower Bancorp, Inc. | MOS | Mosaic Co. | MYC | Blackrock MuniYield California Fund, Inc. |
| MFLX | Multi-Fineline Electronix Inc. | MOSY | MoSys, Inc. | MYD | Blackrock MuniYield Fund, Inc. |
| MFM | MFS Municipal Income Trust | MOT | Motorola Inc. | MYE | Myers Industries Inc. |
| MFN | Minefinders Corp. Ltd. | MOTR | Motricity Inc | MYF | BlackRock MuniYield Investment Fund |
| MFNC | Mackinac Financial Corp. | MOV | Movado Group Inc. | MYGN | Myriad Genetics Inc. |
| MFRI | MFRI Inc. | MOVE | Move, Inc. | MYI | Blackrock MuniYield Insured Fund, Inc. |
| MFSF | Mutualfirst Financial Inc. | MPA | BlackRock Muniyield Pennsylvania Insured Fund | MYJ | BlackRock MuniYield New Jersey Fund, Inc. |
| MFT | BlackRock MuniYield Insured Investment Fund | MPAA | Motorcar Parts of America Inc. | MYL | Mylan, Inc. |
| MFV | MFS Special Value Trust | MPAC | MOD-PAC Corp. | MYLNG | Mylan Inc |
| MFW | M&F Worldwide Corp. | MPB | Mid Penn Bancorp Inc. | MYLNP | Mylan Inc |
| MFY | ML Strtgc Rtrn Nt Lnkd BbyBmr Cnsptn Inx | MPE | BkofAmrCrpMkt Tgt Trm Sc MITTS Lkd S&P 5 | MYM | BlackRock MuniYield Michigan Insured Fund II, Inc. |
| MG | Mistras Group | MPEL | Melco Crown Entertainment Ltd. | MYN | BlackRock MuniYield New York Insured Fund, Inc. |
| MGA | Magna International, Inc. | MPET | Magellan Petroleum Corp. | MYRG | MYR Group, Inc. |
| MGAM | Multimedia Games Inc. | MPG | Maguire Properties Inc. | MYRX | Myriad Pharmaceuticals Inc |
| MGB | Morgan Stanley Global Opportunity Bond Fund Inc. | MPJ | MISS PWR CO SR E | MYX | ML 12% Callable Strides Monsanto Co |
| MGC | Vanguard Mega Cap 300 Index | MPR | Met-Pro Corp. | MYY | SHRT MC400 PROSHARES |
| MGEE | MGE Energy Inc. | MPS | MPS Group Inc. | MZA | BlackRock Muniyield Arizona Fund, Inc. |
| MGF | MFS Government Markets Income Trust | MPV | MassMutual Participation Investors | MZF | MBIA Capital/Claymore Managed Duration Investment Grade Municipa |
| MGG | Magellan Midstream Holdings, L.P. | MPW | Medical Properties Trust Inc. | MZG | Claymore Mrningstr Mnfctrng Spr Sec Indx |
| MGH | Minco Gold Corporation | MPWR | Monolithic Power Systems Inc. | MZJ | ML STEP Mnsanto |
| MGI | Moneygram International Inc. | MPX | Marine Products Corp. | MZN | Claymore Mrningstr Infrmtn Spr Sec Indx |
| MGIC | Magic Software Enterprises Ltd. | MQC | BoA Crp Mkt Lkd Stp Up Nts Lkd S&P 500 I | MZO | Claymore Morningstar Srvcs Spr Sec Indx |
| MGK | Vanguard Mega Cap 300 Growth Index | MQT | BlackRock MuniYield Quality Fund II, Inc. | MZZ | Proshares Midcap 400 |
| MGLN | Magellan Health Services Inc. | MQY | BlackRock MuniYield Quality Fund, Inc. |
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