UCTT · Ultra Clean Holdings, Inc. · Shareholders & Ownership
Every disclosed holder of UCTT in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns UCTT
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 45,982,352 | 101.56% |
| Insiders (Forms 3, 4, 5) | 917,428 | 2.03% |
| 13D/G-only blocks | 5,242,347 | 11.58% |
| Remaining | 6,865,098 | -15.16% |
| Registered funds (N-PORT, not summed) | 25,512,409 | 56.35% |
Shares outstanding: 45,277,029, the issuer's latest cover-page count restated onto today's split basis.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of UCTT
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,919,992 | ||
| 1.1 |
iShares Core S&P Small-Cap ETF
Fund
S000004313 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
2,700,683 | ||
| 1.2 |
iShares Russell 2000 ETF
Fund
S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,154,845 | ||
| 1.3 |
iShares Russell 2000 Growth ETF
Fund
S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
415,331 | ||
| 1.4 |
iShares S&P Small-Cap 600 Value ETF
Fund
S000004316 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
385,912 | ||
| 1.5 |
Master Small Cap Index Series
Fund
S000002716 · Registered fund · Jun 30, 2026
Quantitative Master Series LLC, not summed
|
82,949 | ||
| 2 |
Invesco Ltd.
13F
CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,124,839 | ||
| 2.1 |
Invesco Ltd.
13G
CIK 914208 · Investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
3,145,489 | ||
| 2.2 |
Invesco Small Cap Value Fund
Fund
S000027837 · Registered fund · Jul 31, 2026
AIM Sector Funds (Invesco Sector Funds), not summed
|
1,820,179 | ||
| 2.3 |
Invesco Semiconductors ETF
Fund
S000003032 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
869,554 | ||
| 2.4 |
Invesco Main Street Small Cap Fund
Fund
S000064650 · Registered fund · Jun 30, 2026
AIM Growth Series (Invesco Growth Series), not summed
|
172,812 | ||
| 2.5 |
Invesco Dorsey Wright Technology Momentum ETF
Fund
S000013110 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
|
145,499 | ||
| 3 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,757,438 | ||
| 4 |
FRONTIER CAPITAL MANAGEMENT CO.,LLC
13G
CIK 1216488 · Investment adviser · Jun 30, 2025
Rule 13d-1(b), qualified institution
|
2,754,163 | ||
| 5 |
Capital World Investors
13F
CIK 1422849 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,580,132 | ||
| 5.1 |
Capital World Investors
13G
CIK 1422849 · Investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
2,580,132 | ||
| 6 |
SMALLCAP World Fund Inc
Fund
S000009599 · Registered fund · Jun 30, 2026
SMALLCAP World Fund Inc, not summed
|
2,381,374 | ||
| 7 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,909,026 | ||
| 7.1 |
VANGUARD CAPITAL MANAGEMENT LLC
13G
CIK 2100119 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
2,248,424 | ||
| 8 |
|
1,802,261 | ||
| 8.1 |
State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF
Fund
S000041317 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
410,759 | ||
| 8.2 |
State Street(R) SPDR(R) S & P 600(TM) Small Cap Value ETF
Fund
S000006974 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
232,219 | ||
| 8.3 |
State Street(R) SPDR(R) S&P Kensho New Economies Composite ETF
Fund
S000063362 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
31,206 | ||
| 8.4 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
15,898 | ||
| 8.5 |
State Street(R) SPDR(R) Portfolio S&P 1500(R) Composite Stock Market ETF
Fund
S000006973 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
7,864 | ||
| 9 |
Boston Partners
13F
CIK 1386060 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,360,211 | ||
| 10 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,350,679 | ||
| 11 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,317,631 | ||
| 12 |
Driehaus Capital Management LLC
13F
CIK 938206 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,309,202 | ||
| 12.1 |
Driehaus Small Cap Growth Fund
Fund
S000058261 · Registered fund · Jun 30, 2026
Driehaus Mutual Funds, not summed
|
167,279 | ||
| 12.2 |
Driehaus Micro Cap Growth Fund
Fund
S000042829 · Registered fund · Jun 30, 2026
Driehaus Mutual Funds, not summed
|
81,440 | ||
| 13 |
SHAPIRO CAPITAL MANAGEMENT LLC
13G
CIK 1177244 · Registered investment adviser · Dec 31, 2025
Rule 13d-1(b), qualified institution
|
1,276,967 | ||
| 14 |
Swedbank Robur Fonder AB
13G
CIK 1547676 · Non-US institution · Sep 30, 2024
Rule 13d-1(b), qualified institution
|
1,211,217 | ||
| 15 |
VANGUARD INFORMATION TECHNOLOGY INDEX FUND
Fund
S000004452 · Registered fund · May 31, 2026
VANGUARD WORLD FUND, not summed
|
1,135,268 | ||
| 16 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
949,354 | ||
| 16.1 |
U.S. MICRO CAP PORTFOLIO
Fund
S000000948 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
166,252 | ||
| 16.2 |
U.S. SMALL CAP PORTFOLIO
Fund
S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
147,335 | ||
| 16.3 |
Dimensional U.S. Small Cap ETF
Fund
S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
143,892 | ||
| 16.4 |
Dimensional U.S. Core Equity 2 ETF
Fund
S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
82,257 | ||
| 16.5 |
U.S. CORE EQUITY 2 PORTFOLIO
Fund
S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
75,045 | ||
| 17 |
ALLIANCEBERNSTEIN L.P.
13F
CIK 1109448 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
793,936 | ||
| 17.1 |
AB Small Cap Growth Portfolio
Fund
S000010309 · Registered fund · Jun 30, 2026
AB CAP FUND, INC., not summed
|
333,840 | ||
| 17.2 |
Small Cap Core Portfolio
Fund
S000051867 · Registered fund · Jun 30, 2026
Bernstein Fund Inc, not summed
|
44,692 | ||
| 17.3 |
AB Small Cap Growth Portfolio
Fund
S000010435 · Registered fund · Jun 30, 2026
AB VARIABLE PRODUCTS SERIES FUND, INC., not summed
|
6,406 | ||
| 18 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
739,967 | ||
| 18.1 |
Schwab Fundamental U.S. Small Company ETF
Fund
S000040878 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
271,850 | ||
| 18.2 |
Schwab U.S. Small-Cap ETF
Fund
S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
218,433 | ||
| 18.3 |
Schwab Small-Cap Index Fund
Fund
S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
109,015 | ||
| 18.4 |
Schwab Fundamental U.S. Small Company Index Fund
Fund
S000016767 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
58,767 | ||
| 18.5 |
Schwab U.S. Broad Market ETF
Fund
S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
28,390 | ||
| 19 |
FRONTIER CAPITAL MANAGEMENT CO LLC
13F
CIK 351173 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
667,532 | ||
| 20 |
ROYCE & ASSOCIATES LP
13F
CIK 906304 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
666,496 | ||
| 20.1 |
Royce Small-Cap Fund
Fund
S000009507 · Registered fund · Jun 30, 2026
ROYCE FUND, not summed
|
150,035 | ||
| 20.2 |
Royce Small-Cap Opportunity Fund
Fund
S000009512 · Registered fund · Jun 30, 2026
ROYCE FUND, not summed
|
87,360 | ||
| 20.3 |
Royce Micro-Cap Fund
Fund
S000009506 · Registered fund · Jun 30, 2026
ROYCE FUND, not summed
|
51,555 | ||
| 20.4 |
Royce Capital Fund - Micro-Cap Portfolio
Fund
S000009496 · Registered fund · Jun 30, 2026
ROYCE CAPITAL FUND, not summed
|
17,089 | ||
| 21 |
OBERWEIS ASSET MANAGEMENT INC/
13F
CIK 937886 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
647,276 | ||
| 21.1 |
Oberweis Micro-Cap Fund
Fund
S000010231 · Registered fund · Jun 30, 2026
OBERWEIS FUNDS, not summed
|
621,300 | ||
| 22 |
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.
13F
CIK 921739 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
624,028 | ||
| 22.1 |
Nomura Small Cap Core Fund
Fund
S000002400 · Registered fund · May 29, 2026
Delaware Group Equity Funds V, not summed
|
398,169 | ||
| 23 |
D. E. Shaw & Co., Inc.
13F
CIK 1009207 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
619,802 | ||
| 24 |
TWO SIGMA INVESTMENTS, LP
13F
CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
609,851 | ||
| 25 |
PARADIGM CAPITAL MANAGEMENT INC/NY
13F
CIK 1037792 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
608,200 | ||
| 26 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
549,240 | ||
| 26.1 |
E*TRADE No Fee Total Market Index Fund
Fund
S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
|
136 | ||
| 27 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
513,913 | ||
| 28 |
FULLER & THALER ASSET MANAGEMENT, INC.
13F
CIK 1082327 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
492,608 | ||
| 29 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
491,504 | ||
| 29.1 |
Small Cap Index Fund
Fund
S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
22,755 | ||
| 29.2 |
Small Cap Core Fund
Fund
S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
7,644 | ||
| 29.3 |
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund
S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
|
2,528 | ||
| 30 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
425,191 | ||
| 31 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
388,205 | ||
| 32 |
BNP PARIBAS ARBITRAGE, SA
13F
CIK 1166588 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
373,497 | ||
| 33 |
FRANKLIN RESOURCES INC
13F
CIK 38777 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
356,678 | ||
| 33.1 |
Putnam Small Cap Growth Fund
Fund
S000000777 · Registered fund · Jun 30, 2026
Putnam Funds Trust, not summed
|
200,497 | ||
| 33.2 |
Putnam VT Small Cap Growth Fund
Fund
S000003883 · Registered fund · Jun 30, 2026
Putnam Variable Trust, not summed
|
3,075 | ||
| 34 |
WELLS FARGO & COMPANY/MN
13F
CIK 72971 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
348,875 | ||
| 35 |
First Eagle Investment Management, LLC
13F
CIK 1325447 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
347,930 | ||
| 35.1 |
First Eagle Small Cap Opportunity Fund
Fund
S000072438 · Registered fund · Jul 31, 2026
First Eagle Funds, not summed
|
108,156 | ||
| 35.2 |
First Eagle US Smid Cap Opportunity Fund
Fund
S000077255 · Registered fund · Jul 31, 2026
First Eagle Funds, not summed
|
5,000 | ||
| 36 |
VANGUARD STRATEGIC EQUITY FUND
Fund
S000002593 · Registered fund · Jun 30, 2026
VANGUARD HORIZON FUNDS, not summed
|
346,319 | ||
| 37 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
345,842 | ||
| 37.1 |
Goldman Sachs Small Cap Value Fund
Fund
S000009323 · Registered fund · May 31, 2026
Goldman Sachs Trust, not summed
|
58,673 | ||
| 37.2 |
Goldman Sachs Small Cap Equity Insights Fund
Fund
S000009329 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
17,624 | ||
| 37.3 |
Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF
Fund
S000048296 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
16,136 | ||
| 37.4 |
Goldman Sachs Small Cap Growth Insights Fund
Fund
S000014930 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
14,548 | ||
| 37.5 |
Multi-Manager U.S. Small Cap Equity Fund
Fund
S000051363 · Registered fund · Apr 30, 2026
Goldman Sachs Trust II, not summed
|
4,822 | ||
| 38 |
Column Small Cap Select Fund
Fund
S000082920 · Registered fund · Aug 31, 2026
Trust for Professional Managers, not summed
|
342,687 | ||
| 39 |
PINNACLE ASSOCIATES LTD
13F
CIK 743127 · Registered investment adviser · Sep 30, 2026
|
329,131 | ||
| 40 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
318,922 | ||
| 41 |
Allspring Global Investments Holdings, LLC
13F
CIK 1890906 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
315,916 | ||
| 41.1 |
Allspring Opportunity Fund
Fund
S000007344 · Registered fund · Jun 30, 2026
ALLSPRING FUNDS TRUST, not summed
|
127,028 | ||
| 41.2 |
Allspring Emerging Growth Fund
Fund
S000015703 · Registered fund · Jul 31, 2026
ALLSPRING FUNDS TRUST, not summed
|
24,074 | ||
| 41.3 |
Allspring VT Small Cap Growth Fund
Fund
S000007228 · Registered fund · Jun 30, 2026
Allspring VARIABLE TRUST, not summed
|
15,453 | ||
| 41.4 |
Allspring Disciplined Small Cap Fund
Fund
S000007342 · Registered fund · Jun 30, 2026
ALLSPRING FUNDS TRUST, not summed
|
11,762 | ||
| 41.5 |
Allspring VT Opportunity Fund
Fund
S000007227 · Registered fund · Jun 30, 2026
Allspring VARIABLE TRUST, not summed
|
10,835 | ||
| 42 |
FULLERTHALER BEHAVIORAL SMALL-CAP GROWTH
Fund
S000060086 · Registered fund · Jun 30, 2026
Capitol Series Trust, not summed
|
308,400 | ||
| 43 |
VANGUARD TAX-MANAGED SMALL-CAP FUND
Fund
S000004387 · Registered fund · Jun 30, 2026
VANGUARD TAX-MANAGED FUNDS, not summed
|
304,604 | ||
| 44 |
Russell Investments Group, Ltd.
13F
CIK 1692234 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
303,078 | ||
| 44.1 |
U.S. Small Cap Equity Fund
Fund
S000001586 · Registered fund · Jul 31, 2026
RUSSELL INVESTMENT CO, not summed
|
31,318 | ||
| 44.2 |
Multi-Asset Strategy Fund
Fund
S000055522 · Registered fund · Jul 31, 2026
RUSSELL INVESTMENT CO, not summed
|
27,054 | ||
| 44.3 |
Tax-Managed U.S. Mid & Small Cap Fund
Fund
S000001571 · Registered fund · Jul 31, 2026
RUSSELL INVESTMENT CO, not summed
|
24,816 | ||
| 44.4 |
Multi-Strategy Income Fund
Fund
S000048356 · Registered fund · Jul 31, 2026
RUSSELL INVESTMENT CO, not summed
|
10,943 | ||
| 44.5 |
U.S. Small Cap Equity Fund
Fund
S000006864 · Registered fund · Jun 30, 2026
RUSSELL INVESTMENT FUNDS, not summed
|
7,546 | ||
| 45 |
ION Fund Management Ltd
13F
CIK 2105906 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
298,000 | ||
| 46 |
|
293,674 | ||
| 47 |
T. Rowe Price Investment Management, Inc.
13F
CIK 1897612 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
283,667 | ||
| 48 |
Bank of New York Mellon Corp
13F
CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
270,278 | ||
| 48.1 |
BNY Mellon US Small Cap Core Equity ETF
Fund
S000067262 · Registered fund · Jul 31, 2026
BNY Mellon ETF Trust, not summed
|
1,673 | ||
| 49 |
Assenagon Asset Management S.A.
13F
CIK 1546007 · Unknown · Sep 30, 2026
|
238,610 | ||
| 50 |
VANGUARD RUSSELL 2000 INDEX FUND
Fund
S000030003 · Registered fund · May 31, 2026
VANGUARD SCOTTSDALE FUNDS, not summed
|
229,463 |
41 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
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