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Firm Name Firm Type Website
Lightspeed Financial BROKER-DEALER —
TP ICAP/Liquidnet BROKER-DEALER http://www.liquidnet.com/
London Stock Exchange EXCHANGE/UTILITY —
Macquarie Capital (USA) BROKER-DEALER http://www.macquarie.com/mgl/com/us
Mantara VENDOR —
Morgan Stanley BROKER-DEALER http://www.morganstanley.com/,ms.com,mssb.com,morganstanleysmithbarney.com,morganstanleyclientserv.com
Nasdaq EXCHANGE/UTILITY http://www.nasdaq.com
National Stock Exchange EXCHANGE/UTILITY —
Nomura BROKER-DEALER http://www.nomura.com/,us.nomura.com
NYSE EXCHANGE/UTILITY https://www.nyse.com/index
Oppenheimer BROKER-DEALER http://www.opco.com/
Options Price Reporting Authority EXCHANGE/UTILITY http://www.opradata.com/
OTC Markets Group BROKER-DEALER https://www.otcmarkets.com/
Apex Clearing Services BROKER-DEALER —
Pershing BROKER-DEALER http://www.pershing.com/,pershing.co.uk,bnymellon.com
Pipeline Trading BROKER-DEALER —
Quantlab Financial BROKER-DEALER —
RBC Capital Markets BROKER-DEALER http://www.rbccm.com/,rbc.com
Eze Castle Software VENDOR http://www.realtick.com/,ezesoft.com
RGM Advisors BROKER-DEALER http://www.rgmadvisors.com/,rgmsecurities.com
CenturyLink Technology Solutions VENDOR —
Scivantage VENDOR http://www.scivantage.com/
Scottrade BROKER-DEALER http://www.scottrade.com/
Shadow Financial Systems VENDOR http://www.shadowfinancial.com/
SIAC EXCHANGE/UTILITY https://www.theice.com/index
SIX Telekurs VENDOR http://www.telekurs-financial.com/tkfich_index/tkfich_home.htm/
SunGard Brokerage and Clearance Solutions VENDOR http://www.sungard.com/Phase3/
Susquehanna International Group BROKER-DEALER http://www.sig.com/
TD Ameritrade BROKER-DEALER http://www.ameritrade.com/,tdameritrade.com,td.com,tdsecurities.com,thinkorswim.com
DTN VENDOR http://www.telvent.com/en/, telventdtn.com,dtn.com
Thomson BETA (Thomson Reuters) EXCHANGE http://www.thomsonreuters.com/products_services/financial/financial_products/wealth_management/wealth_transactions/?view
Thomson Reuters EXCHANGE http://www.thomsonreuters.com/
UBS BROKER-DEALER http://www.ubs.com/
Ullink VENDOR http://www.ullink.com/
Wells Fargo BROKER-DEALER https://www.wellsfargo.com/,wachovia.com,wfadvisors.com,wellsfargoadvisors.com,firstclearing.com
US Bancorp Investments BROKER-DEALER http://www.usbank.com/
FIS VENDOR http://www.sungard.com/brass/,gltrade.com,brass.com, http://www.fisglobal.com/
DTCC EXCHANGE/UTILITY http://www.dtcc.com/
Jane Street Holdings BROKER-DEALER —
Newedge Group BROKER-DEALER http://www.newedge.com/
Scotia Capital BROKER-DEALER https://www.scotiabank.com/global/en/global-site.html
SIX Financial Information VENDOR https://www.six-group.com/en/products-services/financial-information.html
Thomson Reuters BETA Systems VENDOR http://www.thomsonreuters.com/products_services/financial/financial_products/wealth_management/wealth_transactions/?view,reuters.com
Thomson Reuters VENDOR http://www.thomsonreuters.com/,thomson.com
TMX Datalinx EXCHANGE/UTILITY —
ABN AMRO Clearing BROKER-DEALER http://abnamroclearing.com,us.abnamroclearing.com
Citadel Securities BROKER-DEALER https://www.citadel.com/
Societe Generale BROKER-DEALER http://www.sgcib.com/
MIAX Options Exchange EXCHANGE/UTILITY http://www.miaxoptions.com/,http://miami-holdings.com
RBS Securities BROKER-DEALER —