Related by context. Frequent words. (Click for all words.) 49 PHLX 46 NYSE Arca 46 ECNs 46 SFE 45 Archipelago Holdings 45 Xetra 45 CME Globex 45 SGX 45 Options Clearing Corporation 44 Chi X 44 Patsystems 44 NYBOT 43 BIDS Trading 43 ELX 43 CBOE 43 UNX 42 NYPC 42 ArcaEx 42 TFX 42 Reg NMS 42 GL TRADE 42 LCH.Clearnet 42 Portware 41 NYFIX 41 Liquidnet 41 CQG 41 Exchange SGX 41 FIX 41 NYSE Liffe 41 Eurex 41 Townsend Analytics 41 Citadel Investment 41 ECN 41 CNQ 41 Nasdaq OMX 40 NYSE Euronext NYX 40 CME Clearing 40 CBOT 40 CPX 40 Alternext 40 EEX 40 Creditex 40 Options Exchange 40 NSX 40 buyside 40 FCStone 39 Orc Software 39 CME Group 39 Deutsche Borse 39 ECX 39 RealTick 39 WCE 39 PCX 39 NYSE Euronext 39 Deutsche Börse 39 Direct Edge 39 MTFs 39 EMCF 39 EuroCCP 39 OTCQX 39 NGX 39 Fidessa 39 & FBOVESPA 39 Exchange LME 39 Corvil 39 ISE 39 Globex 39 OptionsXpress 39 Previous HedgeWorld Story 38 algorithmic trading 38 Euronext 38 Liffe 38 Omgeo 38 Trayport 38 LME 38 ETFS 38 HKEx 38 GGA 38 Borsa Italiana 38 low latency 38 Instinet 38 optionsXpress Holdings Inc. 38 CME 37 OTC derivative 37 StreamBase 37 NYMEX 37 BATS 37 Linedata 37 CCX 37 OTC 37 TradeWeb 37 Euroclear 37 SHFE 37 LSE 37 Exchange DIFX 37 Intercontinental Exchange 37 Stock Exchange LSE 37 CBOE Holdings 37 NYSE NYX 37 BATS Exchange 37 Clearing Corporation