Aptose Biosciences Inc. (APTO)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Bleichroeder Lp	2,500,000	$563,250	0.14%
2.	Sigma Planning Corp	703,384	$158,472	0%
3.	Drw Securities, Llc	592,829	$133,564	0%
4.	Ubs Group Ag	57,827	$13,011	0%
5.	Cetera Investment Advisers	19,206	$4,402	0%