Related by context. Frequent words. (Click for all words.) 55 Penson Worldwide Inc. 51 Portware 51 EquiLend 51 TradeWeb 50 TradingScreen 50 Trayport 50 NumeriX 50 CQG 50 optionsXpress Holdings Inc. 50 FFastFill 49 Tradeweb 49 Townsend Analytics 49 Neonet 49 GL TRADE 49 Linedata Services 48 Euronext.liffe 48 BT Radianz 48 Fixnetix 48 Pershing LLC 48 Omgeo 48 GAIN Capital 47 StatPro 47 BATS Trading 47 NYFIX 47 Prime Brokerage 47 Orc Software 46 RealTick 46 interdealer broker 46 algorithmic trading 46 ITG 46 ACTIV 46 DST Systems 46 MKS Instruments Inc. 45 Clearing Corporation 45 FXall 45 LCH.Clearnet 45 TABB 45 Entuity 45 ACI Worldwide 45 Penson Worldwide 45 Patsystems 45 Corporate Actions 45 FXCM 45 CME Clearing 45 DTCC 44 GlobeOp 44 Advent Software 44 Interactive Data 44 FactSet Research Systems 44 TradeStation 44 Creditex 44 JASDAQ 44 Fidessa 44 NewRiver 44 Medicsight 44 FOREX.com 44 counterparty clearing 44 SAVVIS 44 Corvil 44 GoldenSource 44 Instinet 43 CameronFIX 43 vFinance 43 SAND Technology 43 Broadridge 43 Interbank FX 43 PLX Technology 43 FCStone 43 ScotiaMocatta 43 Paladyne 43 Fiserv 43 Princeton Softech 43 Apama 43 TradeStation Securities 43 QuoteMedia 43 Eze Castle Integration 43 Fundtech 42 OneChicago 42 Linedata 42 HyperRoll 42 Pragma 42 EMCF 42 TradeStation Group 42 Visual Networks 42 BNY Mellon Asset Servicing 42 ICAP 42 BIDS Trading 42 SmartStream 42 thinkorswim 42 Amerex 42 NMX 42 OTC derivative 42 ConvergEx 42 Options Clearing Corporation 42 OTC Derivatives 42 XSP 42 VDM 42 Actimize 42 OptionsXpress 42 TABB Group 42 AXS One