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Equibles

UCTT

Ultra Clean Holdings, Inc.

Company with tickers: UCTT

CIK
1275014
CUSIP
90385V107
Shares Outstanding
44,828,352
13F Activity (30d)
233 filings 227 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 331
Total Value: $3,119,865,232
Total Shares: 50,174,742
Showing 1–100 of 345 holdings by value · page 1 of 4

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 331 13F filers · Δ vs Dec 31, 2025
Top Holder
13.6%
Jun 2023 → Mar 2026 · range 13.6% – 18.5%
−2.1 pts
Top 5
31.7%
Jun 2023 → Mar 2026 · range 31.7% – 48.6%
−16.4 pts
Top 10
47.5%
Jun 2023 → Mar 2026 · range 47.5% – 67.3%
−14.5 pts
HHI
371
Jun 2023 → Mar 2026 · range 371 – 680
Broadly held −242

Quarterly Activity

vs Dec 31, 2025
New
119
Increased
93
Decreased
84
Sold Out
25
Unchanged
35
Holder count: +94
Institutional value: +189.0%
Shares held: +17.7%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP +2,119,286 2,205,445
Large TORONTO DOMINION BANK +2,111,736 2,129,863
Mega UBS Group AG +826,851 1,059,296
Large Driehaus Capital Management LLC +608,746 1,062,376
Large FULLER & THALER ASSET MANAGEMENT, INC. +461,568 475,073

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega Invesco Ltd. −1,739,885 1,659,949
Mid FRONTIER CAPITAL MANAGEMENT CO LLC −1,722,388 1,787,451
Small Divisar Capital Management LLC −529,279 420,049
Mega DIMENSIONAL FUND ADVISORS LP −513,079 1,011,778
Mid ROYCE & ASSOCIATES LP −339,196 759,497

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 2,802,250 $174,243,905
Mega VANGUARD CAPITAL MANAGEMENT LLC 1,916,501 $119,168,032
Large Boston Partners 1,468,878 $91,334,832
Mid COOPER CREEK PARTNERS MANAGEMENT LLC 586,773 $36,485,545
Mega TWO SIGMA INVESTMENTS, LP 581,131 $36,134,725

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 4,990,724 $126,415,036
Mid SHAPIRO CAPITAL MANAGEMENT LLC 1,278,492 $32,384,202
Large Qube Research & Technologies Ltd 184,783 $4,680,553
Large COMERICA BANK 175,307 $4,440,526
Mid WEDGE CAPITAL MANAGEMENT L L P/NC 111,441 $2,822,800
Filter: New 119 Increased 93 Reduced 84 Sold out 25 Unchanged 35
Showing 100 of 345
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $424,852,241 13.62% 6,832,619
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $174,243,905 5.58% 2,802,250
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $131,000,824 4.20% 2,106,800
Mega VANGUARD CAPITAL MANAGEMENT LLC $119,168,032 3.82% 1,916,501
Large TORONTO DOMINION BANK Bank $118,142,000 3.79% 1,900,000
Mega STATE STREET CORP $114,275,896 3.66% 1,837,824
Mid FRONTIER CAPITAL MANAGEMENT CO LLC $111,143,703 3.56% 1,787,451
Mega Invesco Ltd. $103,215,625 3.31% 1,659,949
Large Boston Partners $91,334,832 2.93% 1,468,878
Mega D. E. Shaw & Co., Inc. $73,574,919 2.36% 1,183,257
Mega GEODE CAPITAL MANAGEMENT, LLC $70,933,700 2.27% 1,140,780
Large Driehaus Capital Management LLC $66,058,539 2.12% 1,062,376
Mega DIMENSIONAL FUND ADVISORS LP $62,912,354 2.02% 1,011,778
Mega MORGAN STANLEY $56,689,500 1.82% 911,700
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $52,259,554 1.68% 840,456
Mid ROYCE & ASSOCIATES LP $47,225,523 1.51% 759,497
Mega UBS Group AG $44,023,440 1.41% 708,000
Mega MILLENNIUM MANAGEMENT LLC $42,620,410 1.37% 685,436
Mid OBERWEIS ASSET MANAGEMENT INC/ $39,824,797 1.28% 640,476
Mid PARADIGM CAPITAL MANAGEMENT INC/NY $37,817,876 1.21% 608,200
Mid COOPER CREEK PARTNERS MANAGEMENT LLC $36,485,545 1.17% 586,773
Mega TWO SIGMA INVESTMENTS, LP $36,134,725 1.16% 581,131
Large SG Americas Securities, LLC Broker-Dealer $35,167,080 1.13% 565,569
Mega GOLDMAN SACHS GROUP INC $31,296,934 1.00% 503,328
Large FULLER & THALER ASSET MANAGEMENT, INC. $29,540,039 0.95% 475,073
Mega NORTHERN TRUST CORP Bank $28,487,267 0.91% 458,142
Mega BANK OF AMERICA CORP /DE/ Bank $28,230,962 0.90% 454,020
Mega Bank of New York Mellon Corp Bank $27,586,341 0.88% 443,653
Mid PINNACLE ASSOCIATES LTD $27,462,356 0.88% 441,659
Large First Eagle Investment Management, LLC $26,992,337 0.87% 434,100
Small Divisar Capital Management LLC $26,118,646 0.84% 420,049
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $25,661,623 0.82% 412,699
Large Russell Investments Group, Ltd. $22,381,372 0.72% 359,945
Mega UBS Group AG $21,843,584 0.70% 351,296
Small ION Fund Management Ltd $21,753,797 0.70% 349,852
Mega JPMORGAN CHASE & CO $20,915,049 0.67% 336,363
Mega BNP PARIBAS ARBITRAGE, SA $20,138,609 0.65% 323,876
Small Goodman Financial Corp $19,344,446 0.62% 311,104
Mega JANE STREET GROUP, LLC $19,257,332 0.62% 309,703
Mega VANGUARD FIDUCIARY TRUST CO Bank $18,205,682 0.58% 292,790
Mid NEXT CENTURY GROWTH INVESTORS LLC $17,444,163 0.56% 280,543
Large Public Sector Pension Investment Board Pension $17,245,685 0.55% 277,351
Large MetLife Investment Management, LLC $16,656,218 0.53% 267,871
Large MARSHALL WACE, LLP $16,157,596 0.52% 259,852
Mega AMERIPRISE FINANCIAL INC $15,692,177 0.50% 252,367
Mid Dana Investment Advisors, Inc. $15,509,930 0.50% 249,436
Large LOOMIS SAYLES & CO L P $14,367,186 0.46% 231,058
Mega CITIGROUP INC $14,146,197 0.45% 227,504
Large PRUDENTIAL FINANCIAL INC $13,771,999 0.44% 221,486
Mega PRINCIPAL FINANCIAL GROUP INC $13,720,016 0.44% 220,650
Small G2 Investment Partners Management LLC $11,250,911 0.36% 180,941
Mega AQR CAPITAL MANAGEMENT LLC $11,116,662 0.36% 178,782
Large FEDERATED HERMES, INC. $10,701,550 0.34% 172,106
Mega WELLS FARGO & COMPANY/MN $10,670,211 0.34% 171,602
Mid SG Capital Management LLC $10,271,203 0.33% 165,185
Small Redwood Grove Capital, LLC $10,095,420 0.32% 162,358
Large Allspring Global Investments Holdings, LLC $9,840,357 0.32% 158,256
Large Assenagon Asset Management S.A. $8,794,366 0.28% 141,434
Mega CITADEL ADVISORS LLC $8,656,885 0.28% 139,223
Large TORONTO DOMINION BANK Bank $8,074,881 0.26% 129,863
Mega RHUMBLINE ADVISERS $7,940,572 0.25% 127,703
Large SILVERCREST ASSET MANAGEMENT GROUP LLC $7,829,954 0.25% 125,924
Small FIRST SABREPOINT CAPITAL MANAGEMENT LP $7,772,500 0.25% 125,000
Mega AMERICAN CENTURY COMPANIES INC $7,658,772 0.25% 123,171
Small Tyro Capital Management LLC $7,407,689 0.24% 119,133
Mega BARCLAYS PLC $7,006,378 0.22% 112,679
Small GRACE & WHITE INC /NY $6,836,691 0.22% 109,950
Large Universal- Beteiligungs- und Servicegesellschaft mbH $6,604,075 0.21% 106,209
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $6,503,090 0.21% 104,585
Mid WINTON GROUP Ltd $6,481,643 0.21% 104,240
Mega Legal & General Group Plc $6,454,904 0.21% 103,810
Mid CASTLEARK MANAGEMENT LLC $6,226,083 0.20% 100,130
Large TORONTO DOMINION BANK Bank $6,218,000 0.20% 100,000
Mid Divisadero Street Capital Management, LP $6,218,000 0.20% 100,000
Mega RAYMOND JAMES FINANCIAL INC $6,117,827 0.20% 98,389
Mega DEUTSCHE BANK AG\ Bank $6,060,434 0.19% 97,466
Mid CRAMER ROSENTHAL MCGLYNN LLC $5,861,397 0.19% 94,265
Mega Nuveen, LLC $5,836,898 0.19% 93,871
Large Calamos Advisors LLC $5,588,053 0.18% 89,869
Mega Swiss National Bank Bank $5,583,764 0.18% 89,800
Large Walleye Capital LLC $5,437,827 0.17% 87,453
Large FIFTH THIRD BANCORP Bank $5,252,344 0.17% 84,470
Small Bridge City Capital, LLC $5,050,632 0.16% 81,226
Large SEI INVESTMENTS CO $4,848,982 0.16% 77,983
Small 4D Advisors, LLC $4,663,500 0.15% 75,000
Mega CITADEL ADVISORS LLC $4,253,112 0.14% 68,400
Mega BANK OF MONTREAL /CAN/ Bank $4,179,551 0.13% 67,217
Mid Atom Investors LP $4,132,047 0.13% 66,453
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $4,096,978 0.13% 65,889
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $3,917,340 0.13% 63,000
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension $3,730,800 0.12% 60,000
Small Lisanti Capital Growth, LLC $3,720,540 0.12% 59,835
Mega ALLIANCEBERNSTEIN L.P. $3,555,576 0.11% 57,182
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $3,508,755 0.11% 56,429
Mega JANE STREET GROUP, LLC $3,413,682 0.11% 54,900
Mega PRICE T ROWE ASSOCIATES INC /MD/ $3,238,645 0.10% 52,085
Large ExodusPoint Capital Management, LP $3,237,215 0.10% 52,062
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $3,211,161 0.10% 51,643
Mid Lombard Odier Asset Management (Europe) Ltd $3,196,984 0.10% 51,415
Mid Longaeva Partners L.P. $2,798,348 0.09% 45,004

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