Related by context. Frequent words. (Click for all words.) 52 BATS Trading 51 Joe Ratterman 50 Larry Tabb 50 Getco 45 ConvergEx Group 43 Bloomberg Tradebook 43 Archipelago Holdings 43 vFinance 42 Townsend Analytics 42 CBSX 42 GunnAllen 42 Thomas Kloet 42 Finra 42 Fidelity Brokerage 42 Equiduct 42 statistical arbitrage 41 Promontory Financial 41 optionsXpress Holdings Inc. 41 Gabelli Asset Management 41 Tervela 41 NYSE Euronext NYX 41 hedge fund 41 OXPS 41 Nasdaq OMX 41 Options Clearing Corp. 41 Portware 40 CantorCO2e 40 BlueCrest 40 Exegy 40 Correlix 40 NDAQ 40 NASD 40 DST Systems 40 Frucher 40 Derivix 40 HedgeStreet 40 brokerage 40 NYSE Arca Options 39 Fusion IQ 39 MarketPrizm 39 CAPIS 39 OptionsXpress 39 Corvil 39 interdealer broker 39 Citadel Investment 39 Options Clearing Corporation 39 Icap 39 Instinet 39 IDCG 39 TradingScreen 39 TD Ameritrade AMTD 39 Direct Edge 39 AQR Capital Management 39 Ballista 38 Neonet 38 BATS Global 38 Novastar 38 HyperFeed 38 Advest 38 IntercontinentalExchange 38 Agora X 38 ITG 38 PHLX 38 Self Regulatory Organization 38 ThinkEquity Partners LLC 38 Previous HedgeWorld Story 38 Broadpoint Securities 38 firm Aite Group 38 INET 38 Alternative Asset Management 38 algorithmic trading 38 BrokerTec 38 IntercontinentalExchange ICE 38 Intercontinental Exchange 38 Currenex 38 NASDAQ NDAQ 38 BATS Exchange 38 Refco 38 FINRA SIPC 38 Nasdaq OMX Group 38 NYBOT 38 NASDAQ OMX PHLX 38 Prebon 37 BarclayHedge 37 Frederic Ruffy 37 Euronext.liffe 37 7ticks 37 CBOE 37 GFIG 37 Fixnetix 37 hedge funds 37 NYSE Euronext 37 Portales Partners 37 Paine Webber 37 Institutional Equities 37 Midwest ISO 37 Charles Schwab SCHW 37 OneChicago 37 TABB 37 Ameritrade Holding Corp. 37 Morgan Stanley MWD