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...Sheet exchange codes id code full name security type nasd nasdaq option equity nadf alternative display facility nyse new york stock amex american cboe chicago board options ise international securities arca nysenat national phlx philadelphia box boston nqbb bulletin nqotc otc pink sheets chx cme mercantile future mrx mercury dji dow jones indices gemx gemini c miax nasdbx omx bx cfe futures nqnx nsx trade reporting ntrf bzx bats trading byx edga direct edge a edgx x iex pearl emld emerald chixe chix europe nbsp ltse longterm finraadf finra adf nqtrfch trf memx members order origin agency b broker dealer customer f firm j joint back office l nontph affiliate and m market maker n away p principal r riskless u professional opra condition message description value livevol active from canc cancel transaction previously reported other than as the last or opening report for particular contract is now to be cancelled oseq outofseq being late out of sequence ie later transactions have been cnc...