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Date: 2015-02-19 16:06:54Finance Mathematical finance Stock market Algorithmic trading High-frequency trading Flash Crash Wedbush Securities Direct market access NASDAQ Financial markets Financial economics Investment | February 19, 2015 Mr. Brent Fields Secretary U.S. Securities and Exchange Commission 100 F Street, N.E.Add to Reading ListSource URL: www.sec.govDownload Document from Source WebsiteFile Size: 204,37 KBShare Document on Facebook |