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Who is a Market Maker?

The NASD ( National Association of Securities Dealers ) member firms that use their own capital, research, retail and/or systems resources to represent a stock and compete with each other to buy and sell the stocks or issues they represent. There are more than 500 member firms that act as Nasdaq Market Makers. One of the major differences between The Nasdaq Stock Market and other major markets in the U.S. is Nasdaq's structure of competing Market Makers. Each Market Maker competes for customer order flow by displaying buy and sell quotations for a guaranteed number of shares. Once an order is received, the Market Maker will immediately purchase for or sell from its own inventory until it is executed, normally in a matter of seconds.

Market
Participant ID

MP Type

Name

Address

Telephone

LABF  ,N  ,LABRANCHE & CO. LLC  ,  ,
LACO  ,M  ,F.S. LAFER ASSOCIATES, INC.  ,  ,
LAFF  ,M  ,R. F. LAFFERTY & CO., INC.  ,NEW YORK, NY  ,212-293-9010
LAFR  ,M  ,LAFFER, WARREN AND CO., INC.  ,  ,
LAHO  ,M  ,LAIDLAW GLOBAL SECURITIES, INC.  ,NEW YORK  NY  ,212-376-9100
LAHO  ,M  ,LAIDLAW GLOBAL SECURITIES, INC.  ,NASDAQ/OTCBB TRADING  ,800-322-5132
LAMA  ,M  ,LARA, SHULL & MAY, LTD  ,  ,
LAMP  ,M  ,LAMPOST CAPITAL, L.C.  ,BOCA RATON, FL  ,561-883-0454
LAMP  ,M  ,LAMPOST CAPITAL, L.C.  ,BOCA RATON,FL  ,561-883-1410
LANC  ,M  ,LANCASTER LEEDS & CO., INC.  ,  ,
LAND  ,O  ,LANDMARK SECURITIES CORPORATION  ,  ,817-695-1110
LAND  ,O  ,LANDMARK SECURITIES CORPORATION  ,NASDAQ TRADING  ,212-350-1282
LAND  ,O  ,LANDMARK SECURITIES CORPORATION  ,NASDAQ TRADING  ,212-350-1202
LANG  ,M  ,LANG AND COMPANY   ,  ,
LARG  ,M  ,L'ARGENT CAPITAL INTERNATIONAL  ,  ,
LARK  ,M  ,EMMETT A LARKIN COMPANY, INC.  ,SAN FRANCISCO, CA  ,415-986-2332
LARK  ,M  ,EMMETT A LARKIN COMPANY, INC.  ,SAN FRANCISCO, CA  ,800-227-4545
LARK  ,M  ,EMMETT A LARKIN COMPANY, INC.  ,ENGLEWOOD  CO  ,303-771-1121
LASH  ,M  ,LASHCO, INC.  ,  ,
LASI  ,O  ,LIEBLONG & ASSOCIATES, INC.  ,  ,
LASS  ,M  ,LASALLE ST SECURITIES, L.L.C.  ,CHICAGO  ,800-722-0165
LASS  ,M  ,LASALLE ST SECURITIES, L.L.C.  ,  ,312-705-7020
LASS  ,M  ,LASALLE ST SECURITIES, L.L.C.  ,MARKET MAKING  ,312-705-7018
LASS  ,M  ,LASALLE ST SECURITIES, L.L.C.  ,TOLL FREE  ,888-302-6691
LATN  ,M  ,LANTERN INVESTMENTS, INC.  ,LAWRENCE, NY  ,516-374-7216
LATN  ,M  ,LANTERN INVESTMENTS, INC.  ,HUNTINGTON, NY  ,(516)425-0700
LAVA  ,M  ,LIVADA SECURITIES, INC.  ,PORTLAND  ME  ,207-774-4411
LAVA  ,M  ,LIVADA SECURITIES, INC.  ,NASDAQ TRADING  ,800-222-2722
LAWR  ,M  ,LT LAWRENCE & CO., INC.  ,  ,
LAZA  ,M  ,LAZARD FRERES & CO. LLC  ,NEW YORK, NY  ,212-632-6608
LAZA  ,M  ,LAZARD FRERES & CO. LLC  ,CONVERTIBLES  ,212-632-6851
LBRA  ,M  ,LIBRA INVESTMENTS, INC.  ,NASDAQ TRADING  ,310-312-5600
LCAM  ,M  ,LADENBURG CAPITAL MANAGEMENT INC.  ,FT LAUDERDALE, FL  ,800-929-2111
LCAM  ,M  ,LADENBURG CAPITAL MANAGEMENT INC.  ,  ,954-491-4545
LCAM  ,M  ,LADENBURG CAPITAL MANAGEMENT INC.  ,AGENCY  ,516-470-1425
LCMI  ,M  ,LONDON PACIFIC SECURITIES, INC.  ,  ,
LDMK  ,M  ,LANDMARK SECURITIES CORPORATION   ,WESTBURY  NY  ,516-338-1820
LDMK  ,M  ,LANDMARK SECURITIES CORPORATION   ,NASDAQ TRADING  ,516-338-1788
LDOT  ,M  ,LANDOLT SECURITIES, INC.  ,NASDAQ TRADING  ,920-236-7000
LDWD  ,M  ,LLOYD WADE SECURITIES INC.  ,  ,
LEBO  ,O  ,LEIGH BALDWIN & CO., LLC  ,CAZENOVIA, NY  ,315-655-2964
LEEB  ,M  ,LEEB BROKERAGE SERVICES, INC.  ,NASDAQ TRADING  ,212-653-1720
LEER  ,M  ,LEERINK SWANN & COMPANY  ,TRADING  ,800-947-7525
LEER  ,M  ,LEERINK SWANN & COMPANY  ,  ,617-918-4700
LEGG  ,M  ,LEGG MASON WOOD WALKER, INCORPORATED  ,BALTIMORE,MD  ,410-454-4096
LEGG  ,M  ,LEGG MASON WOOD WALKER, INCORPORATED  ,NASDAQ TRADING  ,888-682-0300
LEGG  ,M  ,LEGG MASON WOOD WALKER, INCORPORATED  ,NASDAQ TRADING  ,800-221-9732
LEGG  ,M  ,LEGG MASON WOOD WALKER, INCORPORATED  ,PREFERRED TRADING  ,410-454-4478
LEGG  ,M  ,LEGG MASON WOOD WALKER, INCORPORATED  ,BALTIMORE,MD  ,410-539-4096
LEGG  ,M  ,LEGG MASON WOOD WALKER, INCORPORATED  ,BALTIMORE,MD  ,888-682-0300
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,NEW YORK-NASDAQ  ,201-524-4612
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,NASDAQ TRADING  ,201-524-4612
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,WARRANTS  ,212-526-7414
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,NASDAQ INT'L  ,011-4471-601-0171
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,INT'L-AGENCY  ,201-524-4810
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,FOREIGN TRADING  ,201-524-4810
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,AGENCY TRADING  ,201-524-4612
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,ARBITRAGE  ,212-526-7376
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,TRADING D/R SITE  ,201-524-4612
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,TRADING D/R SITE  ,201-524-4612
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,PREFERRED  ,212-526-7954
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,CONVERTIBLE BONDS  ,212-526-7255
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,DERIVATIVES  ,212-526-7255
LEHM  ,M  ,LEHMAN BROTHERS INC.  ,TRADING D/R SITE  ,201-524-2237
LEOC  ,M  ,LEONARD & COMPANY  ,TROY, MI  ,(810)952-5858
LEOG  ,M  ,WATSON CAPITAL MANAGEMENT INC  ,  ,
LEVN  ,M  ,JOHN A. LEVIN & CO., INC.  ,NEW YORK, NY  ,212-332-8400
LEWI  ,M  ,LEWIS FINANCIAL GROUP, L.C.  ,  ,
LEXI  ,M  ,LEXINGTON INVESTMENT COMPANY, INC.  ,NASDAQ TRADING  ,606-233-7073
LEXM  ,M  ,LEXINGTON FUNDS DISTRIBUTOR, INC.  ,  ,
LEXS  ,M  ,LEXINGTON SECURITIES, INC.  ,CHICAGO  IL  ,312-634-1268
LEXX  ,M  ,PRESTON LANGLEY ASSET MANAGEMENT, INC.  ,  ,
LFGX  ,S  ,LFG, L.L.C.  ,  ,
LFIN  ,N  ,LIGHTHOUSE FINANCIAL GROUP, LLC  ,  ,
LFSI  ,M  ,LABRANCHE FINANCIAL SERVICES, INC.  ,OTC TRADING  ,800-221-4074
LFSI  ,M  ,LABRANCHE FINANCIAL SERVICES, INC.  ,AGENCY DESK  ,212-482-3666
LFSI  ,M  ,LABRANCHE FINANCIAL SERVICES, INC.  ,MUNIS & GOV'T  ,212-482-3552
LFSI  ,M  ,LABRANCHE FINANCIAL SERVICES, INC.  ,  ,212-482-3553
LFSI  ,M  ,LABRANCHE FINANCIAL SERVICES, INC.  ,PREFERRED  ,212-482-3554
LFTC  ,M  ,L.F. THOMPSON & COMPANY   ,  ,
LGAT  ,M  ,MAGDENSBURG SECURITIES CORP.  ,  ,
LGHT  ,M  ,LIGHT SECURITIES  ,SAN FRANCISCO, CA  ,415-788-6988
LGSA  ,M  ,LG SECURITIES AMERICA, INC.  ,  ,
LGTD  ,M  ,LEGACY TRADING CO., LLC  ,TRADING  ,405-216-0554
LGWI  ,M  ,LLOYD G. WILSON, INC.  ,  ,
LHFC  ,M  ,L.H. FRIEND, WEINRESS, FRANKSON & PRESSON, LLC  ,IRVINE, CA  ,949-852-9911
LHFC  ,M  ,L.H. FRIEND, WEINRESS, FRANKSON & PRESSON, LLC  ,NASDAQ/OTCBB TRADING  ,800-833-2388
LIBD  ,N  ,LIBERTY DISCOUNT BROKER, INC.  ,  ,
LIEB  ,M  ,LIEBER & COMPANY  ,  ,
LINZ  ,N  ,LINTZ GLOVER WHITE & COMPANY, INC.  ,  ,
LIPI  ,M  ,LINCOLN INVESTMENT PLANNING, INC.  ,  ,
LITE  ,M  ,ROBERT M. HORNE   ,  ,
LIVE  ,M  ,LIVINGSTON SECURITIES, INC.   ,  ,
LJRY  ,M  ,LYNCH, JONES & RYAN, INC.  ,NEW YORK, NY  ,212-440-5800
LMAN  ,M  ,LATERMAN & COMPANY  ,NEW YORK, NY  ,212-593-4222
LMFI  ,M  ,L&M FINANCIAL SERVICES  ,  ,
LMKO  ,M  ,L.M. KOHN & COMPANY  ,  ,
LNDN  ,M  ,LONDON ZURICH SECURITIES, INC.   ,  ,
LOBO  ,M  ,LOBO SECURITIES, INC.  ,  ,
LOBR  ,M  ,Loeb Partners Corporation/Retail   ,NEW YORK  NY  ,212-483-7054
LOCC  ,M  ,LOM CLEARING CORP.  ,  ,
LOEB  ,M  ,LOEB PARTNERS CORPORATION  ,NEW YORK, NY  ,212-483-7343
LOMW  ,M  ,LOVETT MITCHELL WEBB & GARRISON, INC.   ,  ,
LORA  ,M  ,Thomas White International   ,  ,
LORD  ,M  ,LOMBARD SECURITIES CORP.   ,  ,
LOUI  ,P  ,LOUIS CAPITAL MARKETS, LLC  ,NEW YORK, NY  ,212-509-4400
LOVE  ,M  ,SPIRIT PARTNERS, L.P.  ,NEW YORK, NY  ,212-843-5577
LOWE  ,M  ,J. F. LOWE & COMPANY INCORPORATED  ,  ,
LOWI  ,M  ,BLUNT ELLIS & LOEWI INCORPORATED   ,  ,
LPCC  ,M  ,LP CHARLES & COMPANY, INC.  ,  ,
LPCO  ,M  ,LIPPER CONVERTIBLES, L.P.  ,NEW YORK, NY  ,212-883-6357
LPZE  ,M  ,LEPERCQ, DE NEUFLIZE & CO. INCORPORATED   ,NASDAQ TRADING  ,212-698-0735
LQNT  ,M  ,LIQUIDNET, INC.  ,NEW YORK, NY  ,212-243-8960
LSAK  ,M  ,L.B. SAKS, INC.  ,  ,
LSCI  ,M  ,LEK SECURITIES CORPORATION  ,NEW YORK, NY  ,212-509-2300
LSPD  ,C  ,MARKETXT - SPECIAL CLEARING ACCOUNT  ,HELP DESK  ,646-521-4744
LSPI  ,M  ,LAFAYETTE INVESTMENTS, INC.  ,  ,
LTCO  ,M  ,LADENBURG, THALMANN & CO., INC.  ,NEW YORK NY  ,212-409-2465
LTCO  ,M  ,LADENBURG, THALMANN & CO., INC.  ,NEW YORK NY  ,1-800-654-4958
LTCO  ,M  ,LADENBURG, THALMANN & CO., INC.  ,NEW YORK NY  ,800-523-8425
LTCO  ,M  ,LADENBURG, THALMANN & CO., INC.  ,BULLETIN BOARD  ,212-409-2500
LTCO  ,M  ,LADENBURG, THALMANN & CO., INC.  ,  ,877-256-6379
LTDR  ,M  ,LIMITED RISK INVESTORS, INC.  ,MONTVILLE  NJ  ,201-334-2384
LTIN  ,M  ,BBVA SECURITIES INC.  ,LATIN AMERICAN TRD  ,212-728-2400
LTRS  ,N  ,EQUITEC SPECIALISTS, LLC  ,  ,
LTWN  ,M  ,LITWIN SECURITIES INC.  ,MIAMI BEACH  FL  ,305-531-2223
LUMI  ,M  ,LEUMI SECURITIES CORPORATION  ,NEW YORK  NY  ,212-789-9803
LUMR  ,M  ,LUMIERE SECURITIES, INC.  ,  ,
LVSC  ,M  ,LEVCO SECURITIES CORP.   ,  ,
LWCO  ,M  ,LEWCO SECURITIES CORP.  ,  ,
LWIS  ,N  ,LEWIS INVESTMENTS, LLC  ,  ,
LYMA  ,M  ,LYNCH & MAYER SECURITIES CORP.  ,NASDAQ TRADING  ,212-833-1359
LYON  ,M  ,CREDIT LYONNAIS SECURITIES (USA), INC.  ,NEW YORK NY  ,212-408-5700
LYON  ,M  ,CREDIT LYONNAIS SECURITIES (USA), INC.  ,LISTED TRADING DPMT  ,212-408-5800
LYON  ,M  ,CREDIT LYONNAIS SECURITIES (USA), INC.  ,INT'L TRADING DPMT  ,212-408-5600
LYON  ,M  ,CREDIT LYONNAIS SECURITIES (USA), INC.  ,NASDAQ TRADING  ,212-408-5899

 

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