CDEL Citadel Securities LLC 43,295 1 28 53,163 3 17 NITE Knight Capital Americas LLC 36,855 2 24 74,950 1 CSTI CANACCORD GENUITY INC. 33,210 3 21 35,927 4 11 ETRF G1 Execution Services, LLC. 24,474 4 15 62,987 2 CANT Cantor, Fitzgerald & Co. 8,500 5 5 27,791 6 9 ATDF AUTOMATED TRADING DESK FINANC 4,498 6 2 - - - 1 MAXM Maxim Group LLC 2,500 7 1 10,000 7 3 1 TMBR Timber Hill Inc. 200 8 <1 - - - 200 15 <1
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