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Date: 2013-07-09 11:51:58Investment High-frequency trading Flash Crash Algorithmic trading Stock market Market maker Market data Short Proprietary trading Financial markets Financial economics Finance | July[removed]Ms. Elizabeth M. Murphy Secretary Securities and Exchange Commission 100 F Street, N.E.Add to Reading ListSource URL: www.sec.govDownload Document from Source WebsiteFile Size: 612,98 KBShare Document on Facebook |