Geospace Technologies Corp (GEOS)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Disciplined Growth Investors Inc	1,425,514	$14,283,650	0.27%
2.	Blackrock, Inc.	894,893	$8,966,828	0%
3.	Moors & Cabot, Inc.	746,087	$7,475,792	0.35%
4.	Vanguard Group Inc	737,529	$7,390,041	0%
5.	Dimensional Fund Advisors Lp	649,933	$6,512,453	0%