ULTRA CLEAN HOLDINGS INC (UCTT) Institutional Shareholders
ULTRA CLEAN HOLDINGS INC (UCTT) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $6.42B in UCTT holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of UCTT tracked by InsiderSet, reporting ownership valued at approximately $986.72M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $460.39M, representing an estimated loss of -53.34% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 53% of the total disclosed UCTT value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Invesco Ltd., Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in ULTRA CLEAN HOLDINGS INC (UCTT).
This page ranks the largest institutional UCTT shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
423
Total Reported Value
$6.42B
Largest Holder
Blackrock, Inc.
Largest Position
$986.72M
Insider Transactions (90d)
6
Latest Filing Quarter
Q2 2026
New Institutional Positions
117
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 6,919,992 | $986,721,656 | $460,387,068 | -$526,334,588 | -53.34% | |
| Invesco Ltd. | 0.04% | 3,124,839 | $445,570,793 | $207,895,539 | -$237,675,254 | -53.34% | |
| Vanguard Portfolio Management Llc | 0.02% | 2,757,438 | $393,183,084 | $183,452,350 | -$209,730,734 | -53.34% | |
| Capital World Investors | 0.04% | 2,580,132 | $367,901,022 | $171,656,182 | -$196,244,840 | -53.34% | |
| Vanguard Capital Management Llc | 0.01% | 1,909,026 | $272,208,017 | $127,007,500 | -$145,200,517 | -53.34% | |
| State Street Corp | 0.01% | 1,802,261 | $256,984,396 | $119,904,424 | -$137,079,972 | -53.34% | |
| Boston Partners | 0.17% | 1,360,211 | $191,894,957 | $90,494,838 | -$101,400,119 | -52.84% | |
| Geode Capital Management, Llc | 0.01% | 1,317,631 | $187,910,401 | $87,661,990 | -$100,248,411 | -53.35% | |
| Driehaus Capital Management Llc | 1.08% | 1,309,202 | $186,679,113 | $87,101,209 | -$99,577,904 | -53.34% | |
| Dimensional Fund Advisors Lp | 0.02% | 949,354 | $135,329,917 | $63,160,522 | -$72,169,395 | -53.33% | |
| Charles Schwab Investment Management Inc | 0.01% | 739,967 | $105,511,895 | $49,230,005 | -$56,281,890 | -53.34% | |
| Frontier Capital Management Co Llc | 0.89% | 667,532 | $95,183,387 | $44,410,904 | -$50,772,483 | -53.34% | |
| Royce & Associates Lp | 0.77% | 666,496 | $95,035,665 | $44,341,979 | -$50,693,686 | -53.34% | |
| Oberweis Asset Management Inc/ | 1.91% | 647,276 | $92,295,085 | $43,063,272 | -$49,231,813 | -53.34% | |
| Nomura Asset Management International Inc. | 0.13% | 624,028 | $88,980,000 | $41,516,583 | -$47,463,417 | -53.34% | |
| D. E. Shaw & Co., Inc. | 0.05% | 619,802 | $88,377,567 | $41,235,427 | -$47,142,140 | -53.34% | |
| Two Sigma Investments, Lp | 0.07% | 609,851 | $86,958,654 | $40,573,387 | -$46,385,267 | -53.34% | |
| Paradigm Capital Management Inc/Ny | 2.36% | 608,200 | $86,723,238 | $40,463,546 | -$46,259,692 | -53.34% | |
| Morgan Stanley | 0.00% | 549,240 | $78,316,459 | $36,540,937 | -$41,775,522 | -53.34% | |
| Fuller & Thaler Asset Management, Inc. | 0.19% | 492,608 | $70,241,009 | $32,773,210 | -$37,467,799 | -53.34% | |
| Northern Trust Corp | 0.01% | 491,504 | $70,083,556 | $32,699,761 | -$37,383,795 | -53.34% | |
| Bank Of America Corp | 0.00% | 425,191 | $60,627,984 | $28,287,957 | -$32,340,027 | -53.34% | |
| Pinnacle Associates Ltd | 0.62% | 399,934 | $57,026,589 | $26,607,609 | -$30,418,980 | -53.34% | |
| Millennium Management Llc | 0.04% | 388,205 | $55,354,151 | $25,827,279 | -$29,526,872 | -53.34% | |
| Bnp Paribas Financial Markets | 0.03% | 373,497 | $53,256,937 | $24,848,755 | -$28,408,182 | -53.34% | |
| Wells Fargo & Company/Mn | 0.01% | 348,875 | $49,746,086 | $23,210,654 | -$26,535,432 | -53.34% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.08% | 347,930 | $49,611,339 | $23,147,783 | -$26,463,556 | -53.34% |
| Alliancebernstein L.P. | 0.02% | 793,936 | $49,366,940 | $52,820,562 | +$3,453,622 | +7.00% | |
| Goldman Sachs Group Inc | 0.01% | 345,842 | $49,313,611 | $23,008,868 | -$26,304,743 | -53.34% | |
| Vanguard Fiduciary Trust Co | 0.01% | 318,922 | $45,475,088 | $21,217,881 | -$24,257,207 | -53.34% | |
| Russell Investments Group, Ltd. | 0.04% | 303,078 | $43,216,032 | $20,163,779 | -$23,052,253 | -53.34% | |
| Ion Fund Management Ltd | 5.03% | 298,000 | $42,491,820 | $19,825,940 | -$22,665,880 | -53.34% | |
| Ubs Group Ag | 0.01% | 293,674 | $41,874,975 | $19,538,131 | -$22,336,844 | -53.34% | |
| Allspring Global Investments Holdings, Llc | 0.06% | 315,916 | $40,939,554 | $21,017,891 | -$19,921,663 | -48.66% | |
| T. Rowe Price Investment Management, Inc. | 0.03% | 283,667 | $40,449,000 | $18,872,366 | -$21,576,634 | -53.34% | |
| Assenagon Asset Management S.A. | 0.05% | 278,166 | $39,663,690 | $18,506,384 | -$21,157,306 | -53.34% | |
| Bank Of New York Mellon Corp | 0.01% | 270,278 | $38,538,960 | $17,981,595 | -$20,557,365 | -53.34% | |
| Goodman Financial Corp | 4.92% | 223,163 | $31,819,778 | $14,847,034 | -$16,972,744 | -53.34% | |
| Next Century Growth Investors Llc | 1.66% | 220,115 | $31,386,197 | $14,644,251 | -$16,741,946 | -53.34% | |
| Prudential Financial Inc | 0.03% | 219,241 | $31,261,574 | $14,586,104 | -$16,675,470 | -53.34% | |
| Principal Financial Group Inc | 0.02% | 219,149 | $31,248,456 | $14,579,983 | -$16,668,473 | -53.34% | |
| Nuveen, Llc | 0.01% | 217,849 | $31,063,089 | $14,493,494 | -$16,569,595 | -53.34% | |
| Wealth High Governance Asset Management Ltda. | 3.30% | 217,157 | $30,964,417 | $14,447,455 | -$16,516,962 | -53.34% | |
| Public Sector Pension Investment Board | 0.08% | 212,256 | $30,265,583 | $14,121,392 | -$16,144,191 | -53.34% | |
| Aqr Capital Management Llc | 0.01% | 210,149 | $29,965,147 | $13,981,213 | -$15,983,934 | -53.34% | |
| Loomis Sayles & Co L P | 0.04% | 203,538 | $29,022,484 | $13,541,383 | -$15,481,101 | -53.34% | |
| Healthcare Of Ontario Pension Plan Trust Fund | 0.04% | 193,365 | $27,571,915 | $12,864,573 | -$14,707,342 | -53.34% | |
| Jpmorgan Chase & Co | 0.00% | 208,456 | $27,514,834 | $13,868,578 | -$13,646,256 | -49.60% | |
| Munro Partners | 0.59% | 183,547 | $26,171,967 | $12,211,382 | -$13,960,585 | -53.34% | |
| Federated Hermes, Inc. | 0.03% | 167,006 | $23,813,386 | $11,110,909 | -$12,702,477 | -53.34% |
Frequently asked questions about UCTT
Who owns the most UCTT stock?
The largest holders of UCTT are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ULTRA CLEAN HOLDINGS INC (UCTT).
Is UCTT widely held by superinvestors?
Many widely followed stocks like UCTT appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly UCTT is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.