Ultra Clean Holdings, Inc. (UCTT) — Institutional Holders, Q2 2026

439 institutional investment managers reported a UCTT position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $6.5B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← UCTT stock profile

UCTT in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

144

Added to

Trimmed

164

Sold out

Biggest buyers

Capital World InvestorsNew · +2,580,132 sh+$367.9M
Invesco Ltd.Added · +1,464,890 sh+$208.9M
ALLIANCEBERNSTEIN L.P.Added · +736,754 sh+$105.1M
FRANKLIN RESOURCESAdded · +339,734 sh+$48.4M
T. Rowe Price Investment ManagementNew · +283,667 sh+$40.4M

Biggest sellers

FRONTIER CAPITAL MANAGEMENTTrimmed · -1,119,919 sh-$159.7M
COOPER CREEK PARTNERS MANAGEMENTSold out · -586,773 sh-$83.7M
SG Americas SecuritiesTrimmed · -563,823 sh-$80.4M
D. E. ShawTrimmed · -563,455 sh-$80.3M
MORGAN STANLEYTrimmed · -362,460 sh-$51.7M

UCTT 13F holders ranked 1–100 of 439

Institutional investors reporting a position in Ultra Clean Holdings, Inc. on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 6,919,992 sh	6,919,992	$986.7M	0.01%	+1.3%
2	Invesco Ltd.#2 · 3,124,839 sh	3,124,839	$445.6M	0.04%	+88.2%
3	VANGUARD PORTFOLIO MANAGEMENT#3 · 2,757,438 sh	2,757,438	$393.2M	0.02%	-1.6%
4	Capital World Investors#4 · 2,580,132 sh	2,580,132	$367.9M	0.04%	New
5	VANGUARD CAPITAL MANAGEMENT#5 · 1,909,026 sh	1,909,026	$272.2M	<0.01%	-0.4%
6	STATE STREET#6 · 1,802,261 sh	1,802,261	$257.0M	<0.01%	-1.9%
7	Boston Partners#7 · 1,360,211 sh	1,360,211	$191.9M	0.17%	-7.4%
8	GEODE CAPITAL MANAGEMENT#8 · 1,317,631 sh	1,317,631	$187.9M	0.01%	+15.5%
9	DRIEHAUS CAPITAL MANAGEMENT#9 · 1,309,202 sh	1,309,202	$186.7M	1.08%	+23.2%
10	DIMENSIONAL FUND ADVISORS#10 · 949,354 sh	949,354	$135.3M	0.02%	-6.2%
11	CHARLES SCHWAB INVESTMENT MANAGEMENT#11 · 739,967 sh	739,967	$105.5M	0.01%	-12.0%
12	FRONTIER CAPITAL MANAGEMENT#12 · 667,532 sh	667,532	$95.2M	0.89%	-62.7%
13	ROYCE & ASSOCIATES#13 · 666,496 sh	666,496	$95.0M	0.77%	-12.2%
14	OBERWEIS ASSET MANAGEMENT#14 · 647,276 sh	647,276	$92.3M	1.91%	+1.1%
15	NOMURA ASSET MANAGEMENT INTERNATIONAL#15 · 624,028 sh	624,028	$89.0M	0.13%	+51.2%
16	D. E. Shaw#16 · 619,802 sh	619,802	$88.4M	0.04%	-47.6%
17	TWO SIGMA INVESTMENTS#17 · 609,851 sh	609,851	$87.0M	0.06%	+4.9%
18	PARADIGM CAPITAL MANAGEMENT#18 · 608,200 sh	608,200	$86.7M	2.36%	0.0%
19	MORGAN STANLEY#19 · 549,240 sh	549,240	$78.3M	<0.01%	-39.8%
20	FULLER & THALER ASSET MANAGEMENT#20 · 492,608 sh	492,608	$70.2M	0.19%	+3.7%
21	NORTHERN#21 · 491,504 sh	491,504	$70.1M	<0.01%	+7.3%
22	BANK OF AMERICA#22 · 425,191 sh	425,191	$60.6M	<0.01%	-6.3%
23	PINNACLE ASSOCIATES LTD#23 · 399,934 sh	399,934	$57.0M	—	-9.4%
24	MILLENNIUM MANAGEMENT#24 · 388,205 sh	388,205	$55.4M	0.02%	-43.4%
25	BNP PARIBAS FINANCIAL MARKETS#25 · 373,497 sh	373,497	$53.3M	0.02%	+15.3%
26	FRANKLIN RESOURCES#26 · 356,678 sh	356,678	$50.9M	0.01%	+2005.0%
27	WELLS FARGO & COMPANY#27 · 348,875 sh	348,875	$49.7M	<0.01%	+103.3%
28	First Eagle Investment Management#28 · 347,930 sh	347,930	$49.6M	0.08%	-19.9%
29	ALLIANCEBERNSTEIN L.P.#29 · 793,936 sh	793,936	$49.4M	0.02%	+1288.4%
30	GOLDMAN SACHS GROUP#30 · 345,842 sh	345,842	$49.3M	<0.01%	-31.3%
31	VANGUARD FIDUCIARY#31 · 318,922 sh	318,922	$45.5M	0.01%	+8.9%
32	Russell Investments Group, Ltd.#32 · 303,078 sh	303,078	$43.2M	0.04%	-15.8%
33	ION Fund Management Ltd#33 · 298,000 sh	298,000	$42.5M	2.69%	-14.8%
34	UBS Group AG#34 · 293,674 sh	293,674	$41.9M	<0.01%	-16.4%
35	Allspring Global Investments#35 · 315,916 sh	315,916	$40.9M	0.06%	+99.6%
36	T. Rowe Price Investment Management#36 · 283,667 sh	283,667	$40.4M	0.03%	New
37	Assenagon Asset Management S.A.#37 · 278,166 sh	278,166	$39.7M	—	+96.7%
38	Bank of New York Mellon#38 · 270,278 sh	270,278	$38.5M	<0.01%	-39.1%
39	Goodman Financial#39 · 223,163 sh	223,163	$31.8M	4.92%	-28.3%
40	NEXT CENTURY GROWTH INVESTORS#40 · 220,115 sh	220,115	$31.4M	1.66%	-21.5%
41	PRUDENTIAL FINANCIAL#41 · 219,241 sh	219,241	$31.3M	0.03%	-1.0%
42	PRINCIPAL FINANCIAL GROUP#42 · 219,149 sh	219,149	$31.2M	0.02%	-0.7%
43	Nuveen#43 · 217,849 sh	217,849	$31.1M	<0.01%	+132.1%
44	Wealth High Governance Asset Management Ltda.#44 · 217,157 sh	217,157	$31.0M	3.30%	New
45	PUBLIC SECTOR PENSION INVESTMENT BOARD#45 · 212,256 sh	212,256	$30.3M	0.08%	-23.5%
46	AQR CAPITAL MANAGEMENT#46 · 210,149 sh	210,149	$30.0M	0.01%	+17.5%
47	LOOMIS SAYLES & L P#47 · 203,538 sh	203,538	$29.0M	0.04%	-11.9%
48	HEALTHCARE OF ONTARIO PENSION PLAN FUND#48 · 193,365 sh	193,365	$27.6M	0.04%	+222.3%
49	JPMORGAN CHASE#49 · 208,456 sh	208,456	$27.5M	<0.01%	-38.0%
50	Munro Partners#50 · 183,547 sh	183,547	$26.2M	0.58%	New
51	FEDERATED HERMES#51 · 167,006 sh	167,006	$23.8M	0.03%	-3.0%
52	Divisar Capital Management#52 · 155,653 sh	155,653	$22.2M	5.11%	-62.9%
53	MARSHALL WACE, LLP#53 · 144,176 sh	144,176	$20.6M	0.02%	-44.5%
54	Dana Investment Advisors#54 · 142,420 sh	142,420	$20.3M	0.53%	-42.9%
55	MetLife Investment Management#55 · 141,753 sh	141,753	$20.2M	0.09%	-47.1%
56	Universal- Beteiligungs- und Servicegesellschaft mbH#56 · 133,205 sh	133,205	$19.0M	0.03%	+25.4%
57	Newbrook Capital Advisors#57 · 127,881 sh	127,881	$18.2M	2.46%	New
58	BESSEMER GROUP#58 · 122,561 sh	122,561	$17.5M	0.02%	New
59	SILVERCREST ASSET MANAGEMENT GROUP#59 · 120,066 sh	120,066	$17.1M	0.11%	-4.7%
60	TORONTO DOMINION BANK#60 · 118,065 sh	118,065	$16.8M	0.02%	-9.1%
61	RHUMBLINE ADVISERS#61 · 110,452 sh	110,452	$15.7M	0.01%	-13.5%
62	BARCLAYS PLC#62 · 110,426 sh	110,426	$15.7M	<0.01%	-2.0%
63	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#63 · 105,799 sh	105,799	$15.1M	<0.01%	+1.2%
64	DEUTSCHE BANK AG\#64 · 105,312 sh	105,312	$15.0M	<0.01%	+8.0%
65	Legal & General Group Plc#65 · 105,062 sh	105,062	$15.0M	<0.01%	+1.2%
66	Redwood Grove Capital#66 · 101,458 sh	101,458	$14.5M	3.67%	-37.5%
67	WINTON GROUP Ltd#67 · 97,320 sh	97,320	$13.9M	0.45%	-6.6%
68	CASTLEARK MANAGEMENT#68 · 95,770 sh	95,770	$13.7M	0.37%	-4.4%
69	CloudAlpha Capital Management Limited/Hong Kong#69 · 91,971 sh	91,971	$13.1M	0.37%	New
70	RENAISSANCE TECHNOLOGIES#70 · 91,900 sh	91,900	$13.1M	0.02%	New
71	Swiss National Bank#71 · 89,000 sh	89,000	$12.7M	<0.01%	-0.9%
72	CITIGROUP#72 · 87,844 sh	87,844	$12.5M	<0.01%	-61.4%
73	Walleye Capital#73 · 85,088 sh	85,088	$12.1M	0.04%	-2.7%
74	BW Gestao de Investimentos Ltda.#74 · 82,843 sh	82,843	$11.8M	0.23%	New
75	Wealth High Governance Capital Ltda#75 · 82,843 sh	82,843	$11.8M	3.53%	New
76	CITADEL ADVISORS#76 · 82,499 sh	82,499	$11.8M	<0.01%	-40.7%
77	AMERIPRISE FINANCIAL#77 · 74,103 sh	74,103	$10.6M	<0.01%	-70.6%
78	FIRST SABREPOINT CAPITAL MANAGEMENT#78 · 70,000 sh	70,000	$10.0M	3.28%	-44.0%
79	Brevan Howard Capital Management#79 · 68,707 sh	68,707	$9.8M	0.07%	+784.1%
80	RAYMOND JAMES FINANCIAL#80 · 66,081 sh	66,081	$9.4M	<0.01%	-32.8%
81	KR Capital#81 · 64,750 sh	64,750	$9.2M	0.92%	New
82	NEW YORK STATE COMMON RETIREMENT FUND#82 · 63,811 sh	63,811	$9.1M	0.01%	-3.2%
83	Point72 Asset Management, L.P.#83 · 62,439 sh	62,439	$8.9M	<0.01%	New
84	Calamos Advisors#84 · 61,129 sh	61,129	$8.7M	0.03%	-32.0%
85	PRICE T ROWE ASSOCIATES#85 · 60,820 sh	60,820	$8.7M	<0.01%	+16.8%
86	Nicholas Investment Partners#86 · 60,338 sh	60,338	$8.6M	0.48%	+73.1%
87	WELLINGTON MANAGEMENT GROUP LLP#87 · 53,796 sh	53,796	$7.7M	<0.01%	New
88	SEGALL BRYANT & HAMILL#88 · 52,578 sh	52,578	$7.5M	0.09%	New
89	Bridge City Capital#89 · 51,065 sh	51,065	$7.3M	1.66%	-37.1%
90	FIFTH THIRD BANCORP#90 · 50,328 sh	50,328	$7.2M	0.01%	-40.4%
91	Emerald Investment Advisers#91 · 49,855 sh	49,855	$7.1M	0.47%	New
92	CREDIT AGRICOLE S A#92 · 48,000 sh	48,000	$6.8M	0.01%	+71.4%
93	GRACE & WHITE#93 · 47,550 sh	47,550	$6.8M	—	-56.8%
94	Lisanti Capital Growth#94 · 46,285 sh	46,285	$6.6M	1.45%	-22.6%
95	Creative Planning#95 · 44,967 sh	44,967	$6.4M	<0.01%	+17.3%
96	Concurrent Investment Advisors#96 · 44,828 sh	44,828	$6.4M	—	+610.1%
97	G2 Investment Partners Management#97 · 44,700 sh	44,700	$6.4M	1.16%	-75.3%
98	TUDOR INVESTMENT ET AL#98 · 44,249 sh	44,249	$6.3M	<0.01%	+17.8%
99	CRAMER ROSENTHAL MCGLYNN#99 · 43,347 sh	43,347	$6.2M	0.31%	-54.0%
100	Insight Wealth Strategies#100 · 47,463 sh	47,463	$6.2M	—	New

Funds that sold out of UCTT in Q2 2026 (31)

Held UCTT at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held UCTT in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
COOPER CREEK PARTNERS MANAGEMENT586,773 sh	586,773	$36.5M
SG Capital Management165,185 sh	165,185	$10.3M
Tyro Capital Management119,133 sh	119,133	$7.4M
Divisadero Street Capital Management100,000 sh	100,000	$6.2M
4D Advisors75,000 sh	75,000	$4.7M
Atom Investors66,453 sh	66,453	$4.1M
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP56,429 sh	56,429	$3.5M
DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD.27,300 sh	27,300	$1.7M
Man Group plc22,563 sh	22,563	$1.4M
Alpine Global Management18,124 sh	18,124	$1.1M
Catalyst Funds Management Pty Ltd15,700 sh	15,700	$976.2K
Dynamic Technology Lab Private Ltd15,379 sh	15,379	$956.3K
VOLORIDGE INVESTMENT MANAGEMENT11,760 sh	11,760	$731.2K
AWM Investment Company11,442 sh	11,442	$711.5K
PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C.10,000 sh	10,000	$621.8K
Pacific Ridge Capital Partners9,172 sh	9,172	$570.3K
MIRABELLA FINANCIAL SERVICES LLP8,584 sh	8,584	$533.8K
Jump Financial6,700 sh	6,700	$416.6K
Blackstone6,315 sh	6,315	$392.7K
Mariner6,312 sh	6,312	$392.3K
BAILARD5,200 sh	5,200	$323.3K
NEEDHAM INVESTMENT MANAGEMENT5,000 sh	5,000	$310.9K
CAPSTONE INVESTMENT ADVISORS4,114 sh	4,114	$255.8K
Moran Wealth Management3,997 sh	3,997	$248.5K
Absolute Gestao de Investimentos Ltda.3,450 sh	3,450	$214.5K
MEEDER ASSET MANAGEMENT3,136 sh	3,136	$195.0K
NOMURA ASSET MANAGEMENT LTD490 sh	490	$30.5K
TWIN PEAKS WEALTH ADVISORS286 sh	286	$17.8K
Sound Income Strategies67 sh	67	$4.3K
Root Financial Partners17 sh	17	$1.1K
MAI Capital Management1 sh	1	$63.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.