Ultra Clean Holdings Inc. (UCTT)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Blackrock, Inc.	7,211,085	$259,238,505	0%
2.	Vanguard Group Inc	4,835,228	$173,826,447	0%
3.	Shapiro Capital Management Llc	2,746,482	$98,736,028	3.35%
4.	Dimensional Fund Advisors Lp	2,406,834	$86,525,542	0.02%
5.	Frontier Capital Management Co Llc	2,130,106	$76,577,305	0.72%