Ultra Clean Ownership | Who Owns Ultra Clean?

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Ultra Clean Ownership Summary

Ultra Clean is owned by 55.37% institutional investors, 1.78% insiders, and 42.85% retail investors. Blackrock is the largest institutional shareholder, holding 15.53% of UCTT shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 6.03% of its assets in Ultra Clean shares.

UCTT Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Ultra Clean	55.37%	1.78%	42.85%
Sector	Technology Stocks	35.93%	15.14%	48.93%
Idea	Semiconductor Stocks List	48.16%	6.95%	44.89%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	6.93M	15.53%	$339.38M
Blackrock funding, inc. /de	6.83M	15.08%	$424.85M
Vanguard group	4.99M	10.99%	$126.42M
State street	1.84M	4.06%	$114.28M
Frontier capital management	1.79M	3.95%	$111.14M
Invesco	1.66M	3.66%	$103.22M
Boston partners	1.47M	3.24%	$91.40M
D. e. shaw	1.18M	2.61%	$73.57M
Geode capital management	1.14M	2.52%	$70.95M
Driehaus capital management	1.06M	2.35%	$66.06M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Divisar capital management	420.05K	6.66%	$26.12M
Goodman financial	311.10K	3.32%	$19.34M
Redwood grove capital	162.36K	3.26%	$10.10M
4d advisors	75.00K	2.96%	$4.66M
First sabrepoint capital management lp	125.00K	2.82%	$7.77M
G2 investment partners management	180.94K	2.77%	$11.25M
Diker management	27.00K	1.50%	$1.68M
Paradigm capital management inc/ny	608.20K	1.45%	$37.82M
Bridge city capital	81.23K	1.40%	$5.05M
Next century growth investors	280.54K	1.26%	$17.44M

Top Buyers

Holder	Shares	% Assets	Change
Boston partners	1.47M	0.10%	1.47M
Driehaus capital management	1.06M	0.49%	608.75K
Cooper creek partners management	586.77K	1.25%	586.77K
Two sigma investments, lp	581.13K	0.03%	581.13K
Fuller & thaler asset management	475.07K	0.10%	461.57K

Top Sellers

Holder	Shares	% Assets	Change
Invesco	1.66M	0.02%	-1.74M
Frontier capital management	1.79M	1.14%	-1.72M
Shapiro capital management	-	-	-1.28M
Swedbank ab	-	-	-1.21M
Vaughan nelson investment management	-	-	-860.80K

New Positions

Holder	Shares	% Assets	Change	Value
Boston partners	1.47M	0.10%	1.47M	$91.40M
Cooper creek partners management	586.77K	1.25%	586.77K	$36.49M
Two sigma investments, lp	581.13K	0.03%	581.13K	$36.13M
Macquarie management	412.70K	0.04%	412.70K	$25.66M
Vanguard fiduciary trust	292.79K	0.00%	292.79K	$18.21M

Sold Out

Holder	Change
Bay harbor wealth management	-1.00
Tfc financial management	-1.00
Tfo-tdc	-1.00
Claris advisors, llc / mo /	-1.00
Global financial private client	-3.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	198	-18.18%	25,082,697	-40.97%	55	0.63%	114	4.59%	51	-40.00%
Dec 31, 2025	161	-34.82%	27,463,818	-34.78%	60	0.70%	68	-42.86%	60	-24.05%
Sep 30, 2025	236	5.36%	41,432,867	3.87%	91	1.18%	115	-10.16%	78	27.87%
Jun 30, 2025	229	-0.43%	42,054,740	0.73%	93	1.09%	129	12.17%	65	-15.58%
Mar 31, 2025	228	-3.80%	41,734,433	0.47%	92	1.09%	114	-12.98%	77	13.24%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	2.70M	6.03%	394.00
Invesco Small Cap Value A	1.43M	3.20%	-
Vanguard US Total Market Shares ETF	1.38M	3.05%	1.16K
Vanguard Total Stock Mkt Idx Inv	1.35M	3.01%	-20.14K
iShares Russell 2000 ETF	1.16M	2.59%	6.90K
Vanguard Information Technology ETF	1.13M	2.53%	8.21K
Swedbank Robur Technology A	845.07K	1.88%	-504.93K
Invesco Semiconductors ETF	835.47K	1.86%	-
Oberweis Micro-Cap Growth	621.30K	1.39%	8.00K
Oberweis Micro-Cap	613.30K	1.37%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jul 02, 2026	HARDING BRIAN E	Chief Accounting Officer	Sell	$156.54K
Jul 02, 2026	HARDING BRIAN E	Chief Accounting Officer	Sell	$281.64K
Jul 02, 2026	HARDING BRIAN E	Chief Accounting Officer	Sell	$55.84K
Jun 04, 2026	Savage Sheri	CFO	Sell	$88.35K
Jun 04, 2026	Savage Sheri	CFO	Sell	$94.90K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	13
2026 Q1	-	-
2025 Q4	-	1
2025 Q3	-	-
2025 Q2	-	3

UCTT Ownership FAQ

Who owns the most shares of Ultra Clean?

Ultra Clean’s largest shareholders are Blackrock (6.93M shares, 15.53%), Blackrock funding, inc. /de (6.83M shares, 15.08%), and Vanguard group (4.99M shares, 10.99%). Together, they hold 41.61% of Ultra Clean’s total shares outstanding.

Does Blackrock own Ultra Clean?

Yes, BlackRock owns 15.53% of Ultra Clean, totaling 6.93M shares as of Jun 2024. This represents 0.01% of BlackRock's total assets, with a market value of 339.38M$. In the last quarter, BlackRock decreased its holdings by -219K shares, a -3.06% change.

Who is Ultra Clean’s biggest shareholder by percentage of total assets invested?

Divisar capital management is Ultra Clean’s biggest shareholder by percentage of total assets invested, with 6.66% of its assets in 420.05K Ultra Clean shares, valued at 26.12M$.

Who is the top mutual fund holder of Ultra Clean shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of Ultra Clean shares, with 6.03% of its total shares outstanding invested in 2.7M Ultra Clean shares.

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