Ultra Clean Holdings Inc. (UCTT)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Blackrock Inc.	7,201,258	$245,850,949	0%
2.	Vanguard Group Inc	4,360,555	$148,869,348	0%
3.	Dimensional Fund Advisors Lp	2,750,031	$93,888,115	0.02%
4.	Frontier Capital Management Co Llc	2,559,943	$87,396,447	0.88%
5.	Shapiro Capital Management Llc	2,030,134	$69,308,775	1.91%