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(Click for frequent words.) 69 Penson Worldwide Inc. 63 NASDAQ PNSN 58 Penson Financial 56 OptionsXpress Holdings 56 NorthPoint Trading Partners 56 Lava Trading 54 Correlix 54 TradePMR 54 XShares Group 54 DTCC depository 53 Intraspect Software 53 Fiduciary Asset Management 53 Belzberg Technologies 53 Compliance# 52 Hotspot FX 52 TransactTools 52 VDM Specialists 52 Silverfern Group 52 PNSN 52 Avery Dennison AVY 52 BNY Brokerage 51 BNY Securities 51 Reznick Capital Markets 51 Doug Sipkin 51 rue# inc 51 NASDAQ OMX Commodities 51 Cogency Software 51 Exchange Traded Products 51 Invesco NYSE IVZ 51 Advent Software ADVS 51 Broadpoint Gleacher Securities 50 Bisys Group 50 VanthedgePoint Group 50 WebMD HLTH 50 Belzberg Technologies Inc. 50 Portware FX 50 www.penson.com 50 optionsXpress Holdings 50 ADP Brokerage Services 50 Capstead Mortgage 50 YellowJacket 50 RenaissanceRe Holdings 50 BSG Clearing Solutions 50 GHCO 50 CreditTrade 50 JovInvestment 50 Bloomberg Tradebook LLC 50 VCampus Corporation 50 NewStar Financial 50 Invesco IVZ 50 FTEN 49 Measurisk 49 MedAvant 49 IHS IHS 49 Amtrust Financial Services 49 RightNow Technologies RNOW 49 Westrock Advisors 49 GSET 49 NetDelta 49 China INSOnline 49 OKERE 49 CACEIS 49 Aon AOC 49 Tradeware 49 BNY Convergex 49 Inc. 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OPY 44 AmerisourceBergen ABC 44 Daniel Niedich 44 Amdocs DOX 44 Ambiron 44 Reed Elsevier RUK 44 AllianceBernstein Holding LP 44 Scrittura 44 Hanwha SolarOne Co. 44 CNet Networks 44 Quantifi 44 Prebon Yamane 44 Onyx Equities 44 Openwave Systems NASDAQ OPWV 44 Mel Nudelman 44 Liaison Technologies 44 Reuters Nasdaq RTRSY 44 TradingScreen 44 Morgan Joseph TriArtisan 44 MidasTrade GDAN 44 Synchronoss Technologies SNCR 44 ProTrader 44 B2BITS 44 SunGard Phase3 44 Citadel Derivatives Group 44 Marketfield Asset Management 44 FXall 44 Assurant AIZ 44 Eze OMS 44 symbol BSFT 44 Envestnet 44 OTC derivative 44 CheckFree Investment 44 Radianz 44 OTKRITIE 44 Purepay 44 Parexel PRXL 44 EFX Prime 44 uBid.com Holdings 44 TriQuint Semiconductor TQNT 44 KHD Humboldt Wedag International 44 Arrow Electronics ARW 44 GFIG 44 GAIN GTX 43 Equitrak 43 Fixed Income Trading 43 Ira Bogner Partner 43 Eagle Bulk Shipping EGLE 43 Institutional Broker 43 CME Clearing 43 Financial Tradeware 43 Inc. 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