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Ultra Clean Holdings, Inc. (UCTT) institutional ownership

Latest close $90.78 Jul 7, 2026
Market cap$4.2B 52-week range SectorTechnology
Funds holding · Q1 2026
306
reported UCTT position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Net bought $224M
203 buyers · 103 sellers

Ultra Clean Holdings, Inc. (UCTT) price and institutional activity

Dates

Q1 2026

$594M bought by 203 investors
Boston Partners$75MDriehaus Capital Management LLC$31M +201 more
$371M sold by 103 investors
Invesco Ltd.-$89MShapiro Capital Management LLC-$65M +101 more
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Bought Sold Totals per quarter; hover a bar for the names.

Ultra Clean Holdings, Inc. (UCTT) institutional activity · 306

Investor Type Est. change Change Δ Own Date
Invesco Ltd. · Reduced −$89M
Change −1.7M Δ Own −51.2% Date Q1 2026
Invesco Ltd. Reduced· Q1 2026 −$89M −1.7M −51.2% Q1 2026
Boston Partners · New +$75M
Change +1.5M Date Q1 2026
Boston Partners New· Q1 2026 +$75M +1.5M Q1 2026
Shapiro Capital Management LLC · Exited −$65M
Change −1.3M Δ Own −100.0% Date Q1 2026
Shapiro Capital Management LLC Exited· Q1 2026 −$65M −1.3M −100.0% Q1 2026
Driehaus Capital Management LLC · Added +$31M
Change +609K Date Q1 2026
Driehaus Capital Management LLC Added· Q1 2026 +$31M +609K Q1 2026
Cooper Creek Partners Management LLC · New +$30M
Change +587K Date Q1 2026
Cooper Creek Partners Management LLC New· Q1 2026 +$30M +587K Q1 2026
Two Sigma Investments, LP · New +$30M
Change +581K Date Q1 2026
Two Sigma Investments, LP New· Q1 2026 +$30M +581K Q1 2026
Divisar Capital Management LLC · Reduced −$27M
Change −529K Date Q1 2026
Divisar Capital Management LLC Reduced· Q1 2026 −$27M −529K Q1 2026
Dimensional · Reduced −$26M
Change −513K Date Q1 2026
Dimensional Reduced· Q1 2026 −$26M −513K Q1 2026
Fuller & Thaler Asset Management, Inc. · Added +$24M
Change +462K Date Q1 2026
Fuller & Thaler Asset Management, Inc. Added· Q1 2026 +$24M +462K Q1 2026
SG Americas Securities, LLC · Added +$23M
Change +440K Date Q1 2026
SG Americas Securities, LLC Added· Q1 2026 +$23M +440K Q1 2026
Nomura Asset Management International Inc. · New +$21M
Change +413K Date Q1 2026
Nomura Asset Management International Inc. New· Q1 2026 +$21M +413K Q1 2026
Bank of America Corp · Added +$19M
Change +379K Date Q1 2026
Bank of America Corp Added· Q1 2026 +$19M +379K Q1 2026
Ion Fund Management Ltd · New +$18M
Change +350K Date Q1 2026
Ion Fund Management Ltd New· Q1 2026 +$18M +350K Q1 2026
Royce & Associates LP · Reduced −$17M
Change −339K Date Q1 2026
Royce & Associates LP Reduced· Q1 2026 −$17M −339K Q1 2026
Russell Investments Group, Ltd. · Added +$15M
Change +295K Date Q1 2026
Russell Investments Group, Ltd. Added· Q1 2026 +$15M +295K Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 306

Famous investor activity in Ultra Clean Holdings, Inc. (UCTT)

Ultra Clean Holdings, Inc. (UCTT) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Harding Brian E. · Officer 3 operations −$494K
Price $126.92–$130.12 Qty −4K Owned 34K ΔOwn −10.3% Trade date Jul 2, 2026 Filed date Jul 7, 2026
Harding Brian E. Officer 3 operations $126.92–$130.12 −4K −$494K 34K −10.3% Jul 2, 2026 Jul 7, 2026
Harding Brian E. · Officer Grant (A) 9K
Owned 37K ΔOwn +33.4% Trade date Jun 26, 2026 Filed date Jun 30, 2026
Harding Brian E. Officer Grant (A) 9K 37K +33.4% Jun 26, 2026 Jun 30, 2026
Savage Sheri · CFO 46 operations −$2.7M
Price $85.54–$91.78 Qty −30K Owned 66K Trade date Jun 4, 2026 Filed date Jun 9, 2026
Savage Sheri CFO 46 operations $85.54–$91.78 −30K −$2.7M 66K Jun 4, 2026 Jun 9, 2026
Harding Brian E. · Officer 22 operations −$1.5M
Price $85.86–$91.65 Qty −17K Owned 28K Trade date Jun 4, 2026 Filed date Jun 8, 2026
Harding Brian E. Officer 22 operations $85.86–$91.65 −17K −$1.5M 28K Jun 4, 2026 Jun 8, 2026
Cho Paul Yoonku · Officer Sell −$84K
Price $89.37 Qty −944 Owned 23K Trade date Jun 2, 2026 Filed date Jun 4, 2026
Cho Paul Yoonku Officer Sell $89.37 −944 −$84K 23K Jun 2, 2026 Jun 4, 2026
Liggett Emily M. · Director Sell −$756K
Price $92.18 Qty −8K Owned 38K Trade date May 27, 2026 Filed date May 27, 2026
Liggett Emily M. Director Sell $92.18 −8K −$756K 38K May 27, 2026 May 27, 2026
Cook Christopher S. · Officer Grant (A) 13K
Owned 111K Trade date May 22, 2026 Filed date May 27, 2026
Cook Christopher S. Officer Grant (A) 13K 111K May 22, 2026 May 27, 2026
Cho Paul Yoonku · Officer Grant (A) 8K
Owned 24K Trade date May 22, 2026 Filed date May 27, 2026
Cho Paul Yoonku Officer Grant (A) 8K 24K May 22, 2026 May 27, 2026
Xiao Jinsong · CEO Grant (A) 31K
Owned 149K Trade date May 22, 2026 Filed date May 27, 2026
Xiao Jinsong CEO Grant (A) 31K 149K May 22, 2026 May 27, 2026
Solomon Joanne · Director Grant (A) 3K
Owned 12K Trade date May 22, 2026 Filed date May 27, 2026
Solomon Joanne Director Grant (A) 3K 12K May 22, 2026 May 27, 2026
McKibben Jeffrey L. · Officer Grant (A) 6K
Owned 17K Trade date May 22, 2026 Filed date May 27, 2026
McKibben Jeffrey L. Officer Grant (A) 6K 17K May 22, 2026 May 27, 2026
Seto Jacqueline A. · Director Grant (A) 3K
Owned 32K Trade date May 22, 2026 Filed date May 27, 2026
Seto Jacqueline A. Director Grant (A) 3K 32K May 22, 2026 May 27, 2026
Palfrey Jamie J. · Officer Grant (A) 10K
Owned 26K Trade date May 22, 2026 Filed date May 27, 2026
Palfrey Jamie J. Officer Grant (A) 10K 26K May 22, 2026 May 27, 2026
Maddock Ernest E. · Director Grant (A) 3K
Owned 48K Trade date May 22, 2026 Filed date May 27, 2026
Maddock Ernest E. Director Grant (A) 3K 48K May 22, 2026 May 27, 2026
Wunar Robert Anthony · Officer Grant (A) 11K
Owned 11K Trade date May 22, 2026 Filed date May 27, 2026
Wunar Robert Anthony Officer Grant (A) 11K 11K May 22, 2026 May 27, 2026
15 of 43
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Ultra Clean Holdings, Inc. (UCTT) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
BlackRock Inc. 7.2M
% of shares outstanding 16.1% Filing date Jan 22, 2024
BlackRock Inc. 7.2M 16.1% Jan 22, 2024
Vanguard Group Inc 4.6M
% of shares outstanding 10.2% Filing date Aug 12, 2024
Vanguard Group Inc 4.6M 10.2% Aug 12, 2024
Vanguard Portfolio Management 2.8M
% of shares outstanding 6.2% Filing date Apr 29, 2026
Vanguard Portfolio Management 2.8M 6.2% Apr 29, 2026
Dimensional Fund Advisors LP 2.8M
% of shares outstanding 6.1% Filing date Feb 9, 2024
Dimensional Fund Advisors LP 2.8M 6.1% Feb 9, 2024
Frontier Capital Management Co LLC 2.6M
% of shares outstanding 5.7% Filing date Feb 14, 2024
Frontier Capital Management Co LLC 2.6M 5.7% Feb 14, 2024
Swedbank Robur Fonder AB 2.4M
% of shares outstanding 5.4% Filing date Jan 25, 2024
Swedbank Robur Fonder AB 2.4M 5.4% Jan 25, 2024
Frontier Capital Management Co.,llc 1.8M
% of shares outstanding 3.9% Filing date May 15, 2026
Frontier Capital Management Co.,llc 1.8M 3.9% May 15, 2026
Invesco Ltd. 1.7M
% of shares outstanding 3.7% Filing date May 8, 2026
Invesco Ltd. 1.7M 3.7% May 8, 2026
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Ultra Clean Holdings, Inc. (UCTT) ownership FAQ

Who owns UCTT?

306 reporting institutions disclosed UCTT position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.