Orion Group Holdings Inc (ORN)

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Institutional Investors' Holdings

Filing Period: Filing is Ongoing

No.	Name	Shares	Value	% Port
1.	Blackrock, Inc.	2,597,418	$13,584,497	0%
2.	Vanguard Group Inc	2,002,545	$10,473,311	0%
3.	Grace & White Inc	992,797	$5,192,328	0.99%
4.	Centerbook Partners Lp	718,486	$3,757,682	0.24%
5.	Acuitas Investments, Llc	441,381	$2,308,423	1.97%