Verity Corp (May1,721,740 ) Mai April Gesammt CSTI CANACCORD GENUITY INC. 555,560 142,611 985,959 NITE Knight Capital Americas LLC 380,311 138,217 971,923 ETRF G1 Execution Services, LLC. 323,071 10,160 360,065 ATDF AUTOMATED TRADING DESK F 164,973 18,940 202,530 CANT Cantor, Fitzgerald & Co. 118,172 - - 122,172 ASCM ASCENDIANT CAPITAL MARKE 98,429 - - 98,429 VFIN vFinance Investments, Inc. 49,015 23,620 95,417 CDEL Citadel Securities LLC 30,113 10,140 136,878 TMBR Timber Hill Inc. 4,596 - - 4,596 ARCA Archipelago Trading Services 2,500 - - 2,500
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