13F Insight
DOSSIER · 13F Holders · Q2 2026Technology · Semiconductors & Related Devices
UCTT

ULTRA CLEAN HLDGS INC

447 institutions still hold ULTRA CLEAN HLDGS INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 90385V107·Semiconductors & Related Devices·447 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$4.8B
visible holders
Holders
447
filers reporting
Concentration
20.42%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

447 institutions reported UCTT in Q2 2026. BlackRock, Inc. leads at 20.4% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$987M6.9M0.01%Q2 202602
Invesco Ltd.
CIK 0000914208
$446M3.1M0.04%Q2 202603
Vanguard Portfolio Management
CIK 0002100121· Index
$393M2.8M0.02%Q2 202604
Capital World Investors
CIK 0001422849
$368M2.6M0.04%Q2 202605
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$313M2.2M0.02%Q2 202606
TORONTO DOMINION BANK
CIK 0000947263
$302M2.1M0.35%Q2 202607
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$272M1.9M0.01%Q2 202608
STATE STREET CORP
CIK 0000093751
$257M1.8M0.01%Q2 202609
Boston Partners
CIK 0001386060
$192M1.4M0.17%Q2 202610
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$188M1.3M0.01%Q2 202611
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 0000938206
$187M1.3M1.08%Q2 202612
UBS Group AG
CIK 0001610520
$143M1.0M0.02%Q2 202613
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$135M949K0.02%Q2 202614
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$106M740K0.01%Q2 202615
FRONTIER CAPITAL MANAGEMENT CO LLC
CIK 0000351173
$95M668K0.89%Q2 202616
ROYCE & ASSOCIATES LP
CIK 0000906304
$95M666K0.77%Q2 202617
OBERWEIS ASSET MANAGEMENT INC/
CIK 0000937886
$92M647K1.91%Q2 202618
Delaware Management Holdings, Inc.
CIK 0000921739
$89M624K0.13%Q2 202619
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$87M610K0.06%Q2 202620
PARADIGM CAPITAL MANAGEMENT INC/NY
CIK 0001037792
$87M608K2.36%Q2 2026
Page 1 of 23
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Insiders at ULTRA CLEAN HLDGS INC
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