Ultra Clean Holdings, Inc. - Common stock, par value $0.001 per share (UCTT)

Q: What does CUSIP 90385V107 represent in this 13F holders report?

CUSIP 90385V107 is the security identifier for UCTT - Ultra Clean Holdings, Inc. - Common stock, par value $0.001 per share used to aggregate holder disclosures.

Q: How many institutions held UCTT - Ultra Clean Holdings, Inc. - Common stock, par value $0.001 per share in Q4 2017?

169 institutional investors reported UCTT - Ultra Clean Holdings, Inc. - Common stock, par value $0.001 per share for Q4 2017. Use the holders table for investor-level position and value details.

CUSIP: 90385V107

Q4 2017 13F Holders as of 31 Dec 2017

Security type / class: Equity / Common stock, par value $0.001 per share
Total 13F shares: 26,609,106
Total 13F value: $614,355,324
Share change: +1,168,747
Put/Call ratio: 67%
SEC-reported price per share: $23.09
Number of holders: 169
Value change: +$9,890,903
Number of buys: 90
Number of sells: 93
Shares outstanding: 45,482,214

Security key

90385V107

Report period

Q4 2017

Institutions

169

Top holders

UCTT full security history Ownership snapshot Full 13F holder table Newer quarter: Q1 2018 Previous quarter: Q3 2017 Ultra Clean Holdings, Inc. SEC filings Ultra Clean Holdings, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 90385V107

Newer quarter: Q1 2018 Previous quarter: Q3 2017

Recent filing periods:

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024

Ownership snapshot

Top reported holders of UCTT - Ultra Clean Holdings, Inc. - Common stock, par value $0.001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

DIMENSIONAL FUND ADVISORS LP

Disclosed value leader

DIMENSIONAL FUND ADVISORS LP

Comparable rows

15/15

Latest evidence

30 Sep 2017

13F Lead comparable stake: 6.2% Showing 1-6 of 15 holder rows.

Quick read

DIMENSIONAL FUND ADVISORS LP leads the comparable SEC ownership view at 6.2%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens DIMENSIONAL FUND ADVISORS LP's linked filing trail.

Comparable ownership Top 5

DIMENSIONAL FUND ADVISORS LP 6.2%

BlackRock Finance, Inc. 5.6%

VANGUARD GROUP INC 5.2%

D. E. Shaw & Co., Inc. 2.2%

AWM Investment Company, Inc. 1.6%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	6.2%	$86,073,000 2,811,014 shares	—	30 Sep 2017
BlackRock Finance, Inc.	13F Company 13F	5.6%	$77,536,000 2,532,215 shares	—	30 Sep 2017
VANGUARD GROUP INC	13F Company 13F	5.2%	$72,291,000 2,360,948 shares	—	30 Sep 2017
D. E. Shaw & Co., Inc.	13F Company 13F	2.2%	$30,405,000 992,972 shares	—	30 Sep 2017
AWM Investment Company, Inc.	13F Company 13F	1.6%	$22,864,000 746,716 shares	—	30 Sep 2017
Invesco Ltd.	13F Company 13F	1.6%	$21,648,000 706,964 shares	—	30 Sep 2017

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q4 2017

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

169

26,609,106

Rows available

169

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q4 2017 vs Q3 2017 Across Filers

Q3 2017 holders

157

Q4 2017 holders

169

Holder diff

Investor	Q3 2017 Shares	Q4 2017 Shares	Share Diff	Share Chg %	Q3 2017 value	Q4 2017 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend