ULTRA CLEAN HLDGS INC (UCTT)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
Institutions report 46,757,889 shares against 45,277,029 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $986.7M | 6,919,992 | 0.01% | 8q | +1.3%+$12.5M |
| Invesco Ltd. | $445.6M | 3,124,839 | 0.04% | 31q | +88.2%+$208.9M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $393.2M | 2,757,438 | 0.02% | 2q | -1.6%-$6.4M |
| Capital World Investors | $367.9M | 2,580,132 | 0.04% | new | NEW |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $313.1M incl. $310.1M options CALL+PUT | 21,264 | 0.02% | 31q | -40.3%-$211.8M |
| TORONTO DOMINION BANK | $302.0M incl. $285.2M options CALL+PUT | 118,065 | 0.35% | 4q | -9.1%-$30.2M |
| VANGUARD CAPITAL MANAGEMENT LLC | $272.2M | 1,909,026 | 0.01% | 2q | HELD |
| STATE STREET CORP | $257.0M | 1,802,261 | 0.01% | 31q | -1.9%-$5.1M |
| Boston Partners | $191.9M | 1,360,211 | 0.17% | 2q | -7.4%-$15.3M |
| GEODE CAPITAL MANAGEMENT, LLC | $187.9M | 1,317,631 | 0.01% | 31q | +15.5%+$25.2M |
| Driehaus Capital Management LLC | $186.7M | 1,309,202 | 1.08% | 4q | +23.2%+$35.2M |
| UBS Group AG | $142.8M incl. $101.0M options CALL | 293,674 | 0.02% | 31q | -16.4%-$28.0M |
| DIMENSIONAL FUND ADVISORS LP | $135.3M | 949,354 | 0.02% | 31q | -6.2%-$8.9M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $105.5M | 739,967 | 0.01% | 31q | -12.0%-$14.3M |
| First Eagle Investment Management, LLC | $99.2M | 695,860 | 0.08% | 21q | +60.3%+$37.3M |
| FRONTIER CAPITAL MANAGEMENT CO LLC | $95.2M | 667,532 | 0.89% | 15q | -62.7%-$159.7M |
| ROYCE & ASSOCIATES LP | $95.0M | 666,496 | 0.77% | 31q | -12.2%-$13.3M |
| OBERWEIS ASSET MANAGEMENT INC/ | $92.3M | 647,276 | 1.91% | 27q | +1.1%+$969.6K |
| D. E. Shaw & Co., Inc. | $92.2M incl. $3.8M options CALL+PUT | 619,802 | 0.04% | 8q | -47.6%-$83.8M |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $89.0M | 624,028 | 0.13% | 2q | +51.2%+$30.1M |
| TWO SIGMA INVESTMENTS, LP | $87.0M | 609,851 | 0.06% | 2q | +4.9%+$4.1M |
| PARADIGM CAPITAL MANAGEMENT INC/NY | $86.7M | 608,200 | 2.36% | 31q | HELD |
| Assenagon Asset Management S.A. | $79.3M | 556,332 | 0.05% | 12q | +293.4%+$59.2M |
| MORGAN STANLEY | $78.3M | 549,240 | 0.00% | 35q | -39.8%-$51.7M |
| FULLER & THALER ASSET MANAGEMENT, INC. | $70.2M | 492,608 | 0.19% | 6q | +3.7%+$2.5M |
| NORTHERN TRUST CORP | $70.1M | 491,504 | 0.01% | 31q | +7.3%+$4.8M |
| BANK OF AMERICA CORP /DE/ | $60.6M | 425,191 | 0.00% | 31q | -6.3%-$4.1M |
| PINNACLE ASSOCIATES LTD | $57.0M | 399,934 | 0.62% | 31q | -9.4%-$5.9M |
| MILLENNIUM MANAGEMENT LLC | $55.4M | 388,205 | 0.02% | 9q | -43.4%-$42.4M |
| BNP PARIBAS FINANCIAL MARKETS | $53.3M | 373,497 | 0.02% | 31q | +15.3%+$7.1M |
| FRANKLIN RESOURCES INC | $50.9M | 356,678 | 0.01% | 4q | +2005.0%+$48.4M |
| WELLS FARGO & COMPANY/MN | $49.7M | 348,875 | 0.01% | 31q | +103.3%+$25.3M |
| ALLIANCEBERNSTEIN L.P. | $49.4M | 793,936 | 0.02% | 31q | +1288.4%+$45.8M |
| GOLDMAN SACHS GROUP INC | $49.3M | 345,842 | 0.00% | 31q | -31.3%-$22.5M |
| VANGUARD FIDUCIARY TRUST CO | $45.5M | 318,922 | 0.01% | 2q | +8.9%+$3.7M |
| Russell Investments Group, Ltd. | $43.2M | 303,078 | 0.04% | 14q | -15.8%-$8.1M |
| ION Fund Management Ltd | $42.5M | 298,000 | 2.69% | 2q | -14.8%-$7.4M |
| Allspring Global Investments Holdings, LLC | $40.9M | 315,916 | 0.06% | 10q | +99.6%+$20.4M |
| T. Rowe Price Investment Management, Inc. | $40.4M | 283,667 | 0.03% | new | NEW |
| Bank of New York Mellon Corp | $38.5M | 270,278 | 0.01% | 31q | -39.1%-$24.7M |
| CITADEL ADVISORS LLC | $33.7M incl. $21.9M options CALL+PUT | 82,499 | 0.00% | 31q | -40.7%-$23.1M |
| BARCLAYS PLC | $32.4M incl. $16.6M options CALL | 110,426 | 0.01% | 31q | -2.0%-$660.8K |
| Goodman Financial Corp | $31.8M | 223,163 | 4.92% | 7q | -28.3%-$12.5M |
| NEXT CENTURY GROWTH INVESTORS LLC | $31.4M | 220,115 | 1.66% | 2q | -21.5%-$8.6M |
| PRUDENTIAL FINANCIAL INC | $31.3M | 219,241 | 0.03% | 31q | -1.0%-$320.1K |
| PRINCIPAL FINANCIAL GROUP INC | $31.2M | 219,149 | 0.02% | 31q | -0.7%-$214.0K |
| Nuveen, LLC | $31.1M | 217,849 | 0.01% | 6q | +132.1%+$17.7M |
| Wealth High Governance Asset Management Ltda. | $31.0M | 217,157 | 3.30% | new | NEW |
| Public Sector Pension Investment Board | $30.3M | 212,256 | 0.08% | 31q | -23.5%-$9.3M |
| AQR CAPITAL MANAGEMENT LLC | $30.0M | 210,149 | 0.01% | 27q | +17.5%+$4.5M |
| LOOMIS SAYLES & CO L P | $29.0M | 203,538 | 0.04% | 2q | -11.9%-$3.9M |
| JANE STREET GROUP, LLC | $28.3M incl. $28.1M options CALL+PUT | 1,970 | 0.00% | 11q | -99.4%-$4.4B |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $27.6M | 193,365 | 0.04% | 4q | +222.3%+$19.0M |
| JPMORGAN CHASE & CO | $27.5M | 208,456 | 0.00% | 31q | -38.0%-$16.9M |
| Munro Partners | $26.2M | 183,547 | 0.58% | new | NEW |
| FEDERATED HERMES, INC. | $23.8M | 167,006 | 0.03% | 2q | -3.0%-$727.2K |
| Divisar Capital Management LLC | $22.2M | 155,653 | 5.11% | 31q | -62.9%-$37.7M |
| MARSHALL WACE, LLP | $20.6M | 144,176 | 0.02% | 8q | -44.5%-$16.5M |
| Dana Investment Advisors, Inc. | $20.3M | 142,420 | 0.53% | 10q | -42.9%-$15.3M |
| MetLife Investment Management, LLC | $20.2M | 141,753 | 0.09% | 32q | -47.1%-$18.0M |
| IMC-Chicago, LLC | $19.4M incl. $16.0M options CALL+PUT | 23,709 | 0.00% | 2q | HELD |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $19.0M | 133,205 | 0.03% | 3q | +25.4%+$3.8M |
| Newbrook Capital Advisors LP | $18.2M | 127,881 | 2.46% | new | NEW |
| BESSEMER GROUP INC | $17.5M | 122,561 | 0.02% | 19q | +24073.8%+$17.4M |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $17.1M | 120,066 | 0.11% | 2q | -4.7%-$835.3K |
| RHUMBLINE ADVISERS | $15.7M | 110,452 | 0.01% | 31q | -13.5%-$2.5M |
| Point72 Asset Management, L.P. | $15.3M incl. $6.4M options CALL+PUT | 62,439 | 0.02% | 2q | HELD |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $15.1M | 105,799 | 0.00% | 31q | +1.2%+$173.1K |
| DEUTSCHE BANK AG\ | $15.0M | 105,312 | 0.00% | 34q | +8.0%+$1.1M |
| Legal & General Group Plc | $15.0M | 105,062 | 0.00% | 31q | +1.2%+$178.5K |
| Redwood Grove Capital, LLC | $14.5M | 101,458 | 3.67% | 2q | -37.5%-$8.7M |
| WINTON GROUP Ltd | $13.9M | 97,320 | 0.45% | 4q | -6.6%-$986.7K |
| CASTLEARK MANAGEMENT LLC | $13.7M | 95,770 | 0.37% | 2q | -4.4%-$621.7K |
| CloudAlpha Capital Management Limited/Hong Kong | $13.1M | 91,971 | 0.37% | new | NEW |
| RENAISSANCE TECHNOLOGIES LLC | $13.1M | 91,900 | 0.02% | new | NEW |
| Walleye Capital LLC | $12.9M incl. $727.2K options CALL+PUT | 85,088 | 0.05% | 5q | -2.7%-$357.4K |
| Swiss National Bank | $12.7M | 89,000 | 0.01% | 31q | -0.9%-$114.1K |
| CITIGROUP INC | $12.5M | 87,844 | 0.00% | 31q | -61.4%-$19.9M |
| BW Gestao de Investimentos Ltda. | $11.8M | 82,843 | 0.23% | new | NEW |
| Wealth High Governance Capital Ltda | $11.8M | 82,843 | 3.53% | new | NEW |
| AMERIPRISE FINANCIAL INC | $10.6M | 74,103 | 0.00% | 31q | -70.6%-$25.4M |
| FIRST SABREPOINT CAPITAL MANAGEMENT LP | $10.0M | 70,000 | 3.28% | 2q | -44.0%-$7.8M |
| Brevan Howard Capital Management LP | $9.8M | 68,707 | 0.07% | 3q | +784.1%+$8.7M |
| GROUP ONE TRADING LLC | $9.8M CALL+PUT | options only | 0.01% | 2q | OPTIONS |
| RAYMOND JAMES FINANCIAL INC | $9.4M | 66,081 | 0.00% | 7q | -32.8%-$4.6M |
| KR Capital LP | $9.2M | 64,750 | 0.92% | new | NEW |
| NEW YORK STATE COMMON RETIREMENT FUND | $9.1M | 63,811 | 0.01% | 31q | -3.2%-$296.3K |
| Calamos Advisors LLC | $8.7M | 61,129 | 0.03% | 2q | -32.0%-$4.1M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $8.7M | 60,820 | 0.00% | 31q | +16.8%+$1.2M |
| Nicholas Investment Partners, LP | $8.6M | 60,338 | 0.48% | 2q | +73.1%+$3.6M |
| SIMPLEX TRADING, LLC | $8.4M incl. $7.2M options CALL+PUT | 8,705 | 0.00% | 21q | +67.1%+$3.4M |
| WELLINGTON MANAGEMENT GROUP LLP | $7.7M | 53,796 | 0.00% | new | NEW |
| SEGALL BRYANT & HAMILL, LLC | $7.5M | 52,578 | 0.09% | new | NEW |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $7.3M | 51,292 | 0.01% | 31q | -0.7%-$50.0K |
| Bridge City Capital, LLC | $7.3M | 51,065 | 1.66% | 7q | -37.1%-$4.3M |
| FIFTH THIRD BANCORP | $7.2M | 50,328 | 0.01% | 25q | -40.4%-$4.9M |
| Emerald Investment Advisers, LLC | $7.1M | 49,855 | 0.47% | new | NEW |
| CREDIT AGRICOLE S A | $6.8M | 48,000 | 0.01% | 2q | +71.4%+$2.9M |
| GRACE & WHITE INC /NY | $6.8M | 47,550 | 1.07% | 6q | -56.8%-$8.9M |
| Lisanti Capital Growth, LLC | $6.6M | 46,285 | 1.45% | 2q | -22.6%-$1.9M |
Showing the largest 100 of 441 reported holders. The count of 440 above leaves out 1 position whose reported value failed our price check; it is listed here as filed.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-09-30 | 2026-09-28 | Directors or officers departed or appointed | filing |
| 2026-08-14 | 2026-08-14 | Material agreement entered | filing |
| 2026-08-06 | 2026-08-04 | Directors or officers departed or appointed | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-04 | HARDING BRIAN E | Chief Accounting Officer | Sold | 16,988 | $1.5M ×22 |
| 2026-06-04 | Savage Sheri | CFO | Sold | 15,766 | $1.4M ×17 |
| 2026-06-04 | Savage Sheri | CFO | Sold | 14,421 | $1.3M ×29 |
| 2026-05-27 | LIGGETT EMILY M | Director | Sold | 8,198 | $755.7K |
| 2026-07-02 | HARDING BRIAN E | Chief Accounting Officer | Sold | 3,837 | $494.0K ×3 |
| 2026-05-14 | McKibben Jeffrey L. | Chief Information Officer | Sold | 4,205 | $365.8K |
| 2026-05-08 | McKibben Jeffrey L. | Chief Information Officer | Sold | 2,500 | $216.2K |
| 2026-05-08 | Cho Paul Yoonku | General Counsel and Secretary | Sold | 2,000 | $173.8K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 84 | $86.9M | 1,075,576 | 12 | 26 | 29 | 0.0% |
| Q2 2026 | 440 | $7.4B | 46,757,889 | 142 | 95 | 161 | 11.0% |
| Q1 2026 | 334 | $3.1B | 45,025,091 | 115 | 89 | 83 | 10.5% |
| Q4 2025 | 238 | $1.1B | 42,503,101 | 24 | 78 | 81 | 0.3% |
| Q3 2025 | 242 | $1.2B | 42,701,338 | 39 | 69 | 78 | 0.4% |
| Q2 2025 | 232 | $961.9M | 42,363,596 | 41 | 87 | 63 | 0.6% |
| Q1 2025 | 228 | $899.0M | 41,781,425 | 43 | 72 | 75 | 0.5% |
| Q4 2024 | 237 | $1.5B | 41,562,281 | 28 | 91 | 65 | 0.3% |
| Q3 2024 | 249 | $1.6B | 40,895,331 | 60 | 87 | 61 | 0.2% |
| Q2 2024 | 220 | $2.0B | 41,446,751 | 38 | 67 | 67 | 0.4% |
| Q1 2024 | 205 | $2.0B | 42,311,380 | 36 | 51 | 72 | 0.4% |
| Q4 2023 | 197 | $1.4B | 41,161,381 | 22 | 67 | 62 | 0.3% |
| Q3 2023 | 204 | $1.2B | 40,098,603 | 24 | 64 | 75 | 0.3% |
| Q2 2023 | 200 | $1.6B | 40,145,684 | 18 | 63 | 83 | 0.6% |
| Q1 2023 | 206 | $1.3B | 40,085,539 | 19 | 55 | 85 | 0.5% |
| Q4 2022 | 216 | $1.3B | 40,088,378 | 34 | 62 | 84 | 0.5% |
| Q3 2022 | 200 | $1.1B | 42,324,681 | 16 | 76 | 68 | 0.7% |
| Q2 2022 | 226 | $2.5B | 83,865,623 | 35 | 85 | 63 | 0.6% |
| Q1 2022 | 253 | $1.7B | 40,588,664 | 27 | 94 | 79 | 1.2% |
| Q4 2021 | 271 | $2.8B | 48,156,826 | 47 | 79 | 86 | 1.8% |
| Q3 2021 | 234 | $2.1B | 47,918,270 | 27 | 73 | 93 | 1.3% |
| Q2 2021 | 259 | $2.7B | 48,858,964 | 47 | 92 | 85 | 1.1% |
| Q1 2021 | 234 | $2.7B | 45,518,053 | 51 | 64 | 89 | 1.4% |
| Q4 2020 | 223 | $2.2B | 69,006,507 | 36 | 68 | 77 | 0.8% |
| Q3 2020 | 199 | $1.5B | 68,376,106 | 24 | 56 | 80 | 0.9% |
| Q2 2020 | 201 | $1.7B | 74,050,918 | 48 | 58 | 67 | 0.3% |
| Q1 2020 | 179 | $1.3B | 95,728,975 | 28 | 63 | 60 | 0.1% |
| Q4 2019 | 182 | $1.2B | 48,961,957 | 46 | 46 | 60 | 1.4% |
| Q3 2019 | 159 | $1.5B | 103,407,602 | 23 | 55 | 42 | 0.9% |
| Q2 2019 | 150 | $1.4B | 100,933,738 | 17 | 52 | 50 | 0.9% |
| Q1 2019 | 153 | $1.3B | 121,125,311 | 23 | 51 | 41 | 0.7% |
| Q4 2018 | 150 | $974.2M | 113,973,724 | 3 | 2 | 1 | 0.9% |
