Ultra Clean Holdings Inc. (UCTT)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Blackrock, Inc.	6,958,217	$148,975,427	0%
2.	Vanguard Group Inc	4,847,408	$103,783,005	0%
3.	Shapiro Capital Management Llc	4,083,404	$87,425,680	3.6%
4.	Dimensional Fund Advisors Lp	2,262,519	$48,440,725	0.01%
5.	Frontier Capital Management Co Llc	1,945,886	$41,661,428	0.46%