Ultra Clean Holdings
UCTT · NASDAQ
Who owns UCTT
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 52.9% of UCTT’s shares.
- BlackRock Institutional Trust Company, N.A.14.1%
- Vanguard Portfolio Management, LLC6.2%
- Capital World Investors5.8%
- Capital Research Global Investors5.5%
- Next 6 largest institutions21.4%
- All other shareholders47.1%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 6.30M | 14.06% |
| Vanguard Portfolio Management, LLC | 2.76M | 6.15% |
| Capital World Investors | 2.58M | 5.76% |
| Capital Research Global Investors | 2.45M | 5.46% |
| Invesco Advisers, Inc. | 1.92M | 4.27% |
| Vanguard Capital Management, LLC | 1.91M | 4.26% |
| State Street Investment Management (US) | 1.80M | 4.02% |
| Boston Partners | 1.36M | 3.03% |
| Geode Capital Management, L.L.C. | 1.32M | 2.94% |
| Driehaus Capital Management, LLC | 1.31M | 2.92% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 2.73M | 6.10% |
| American Funds SMALLCAP World Fund | 2.38M | 5.31% |
| Invesco Small Cap Value Fund | 1.82M | 4.06% |
| Vanguard Total Stock Market Index Fund | 1.36M | 3.02% |
| iShares Russell 2000 ETF | 1.16M | 2.59% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $11.33M (85 trades) of UCTT on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Xiao Jinsong | Tax withholding | 19.19K | $1.56M |
| Keogh Michael Dennis | Award | 20.92K | — |
| Cook Christopher S | Tax withholding | 12.50K | $847.67K |
| HARDING BRIAN E | Sale | 1.20K | $156.54K |
| HARDING BRIAN E | Sale | 2.19K | $281.64K |
| HARDING BRIAN E | Sale | 440 | $55.84K |
| Savage Sheri | Sale | 260 | $23.86K |
| Savage Sheri | Sale | 1.71K | $155.23K |
| Savage Sheri | Sale | 852 | $76.64K |
| Savage Sheri | Sale | 1.43K | $127.32K |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| Ro KhannaHouse | Sale | $1K–$15K | Nov 19, 2025 |
Short interest
Settled Sep 30, 2026
- Shares short
- 3.71M
- Days to cover
- 4.44
- % of shares outstanding
- 8.28%
- Average daily volume
- 837.08K
- Change since last report
- +2.6%
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