Ultra Clean Holdings, Inc
Held by 10 tracked managers as of Q2 2026 · CUSIP ⓘCUSIP: A 9-character ID for one specific security - one share class of one company, or one bond. Tickers can change and can mean different things in different countries; a CUSIP always identifies exactly the same security, which is why filings use it. Guide 90385V107 · Sector ⓘGICS sectors: The 11-sector system most investors know (Global Industry Classification Standard): Technology, Health Care, Financials and so on. This site assigns each company a GICS-style sector from its SIC code, with a few hand corrections, so sector pages match the names investors expect. Guide
In plain English: 10 of the investors we track own this stock. In the latest quarter, 3 of them bought more of it and 7 sold some or all of theirs (2 bought it for the first time). That tells you what they did last quarter — not what the stock will do next.
Educational and informational only, not personalized investment advice. Based on public filings that may be delayed or contain errors; verify with the original filings. Disclaimer
Managers holding
10
+2 vs last quarter (like-for-like)
Total value held
$601.02M
Across tracked managers
Average weight ⓘOn average, how big this stock is in the portfolios that own it (its share of each manager's reported portfolio value).
0.1%
Of each manager's book
QoQ value ⓘLike-for-like: only managers that filed both quarters are compared, so a manager filing late (or confidentially) does not look like buying or selling. Includes price changes.
+$274.41M
+84.0% vs last quarter
Net shares bought
-1.0M
Est. net flow -$145.60M
Quarter activity
3 bought · 7 sold
2 new · 0 sold out
Tracked capital in this stock
Total value held (area) and number of managers (line). Dips can mean a large holder filed that quarter confidentially (e.g. Norges Bank in Q1/Q3).
Aggregate buying and selling
Net share change reported each quarter
Who owns UCTT?
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Who owns UCTT? — Q2 2026
Holders ranked by position size, with each one's quarter-over-quarter change.
Column filters
| # | Manager | Fund | Shares | Value ↓ | % of their portfolio | QoQ | Δ shares | Δ shares % | Est. Δ value ⓘChange in shares × this quarter's price |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Boston Partners | Boston Partners Global Investors | 1.36M | $191.89M | 0.2% | Reduced | -108.7K | -7.4% | -$15.33M |
| 2 | Chuck Royce | Royce & Associates | 666.50K | $95.04M | 0.8% | Reduced | -93.0K | -12.2% | -$13.26M |
| 3 | David Shaw | D.E. Shaw & Co. | 619.80K | $88.38M | 0.1% | Reduced | -563.5K | -47.6% | -$80.34M |
| 4 | Two Sigma | Two Sigma Investments | 609.85K | $86.96M | 0.1% | Added | +28.7K | +4.9% | +$4.10M |
| 5 | Israel Englander | Millennium Management | 388.20K | $55.35M | 0.0% | Reduced | -297.2K | -43.4% | -$42.38M |
| 6 | Matthew McLennan | First Eagle Investment Management | 347.93K | $49.61M | 0.1% | Reduced | -86.2K | -19.9% | -$12.29M |
| 7 | Jim Simons | Renaissance Technologies | 91.90K | $13.10M | 0.0% | New | +91.9K | — | +$13.10M |
| 8 | Ken Griffin | Citadel Advisors | 82.50K | $11.76M | 0.0% | Reduced | -56.7K | -40.7% | -$8.09M |
| 9 | Steve Cohen | Point72 Asset Management | 62.44K | $8.90M | 0.0% | New | +62.4K | — | +$8.90M |
| 10 | Barrow Hanley | Barrow Hanley Mewhinney & Strauss | 138 | $19.68K | 0.0% | Reduced | -63 | -31.3% | -$8.98K |
Column filters
No tracked manager sold out of this stock this quarter.
Politician trades
Column filters
| Politician | Date | Ticker | Asset | Type | Reported range ⓘThe dollar range the politician reported. Exact amounts are not disclosed. | Est. size ⓘOur estimate only: the midpoint of the reported range. | Owner | Account ⓘSubholding Of: the account the trade was in, as named on the report (e.g. an IRA or a brokerage account). The same stock bought on the same day in different accounts is a separate trade in each account. | Filed ↓ | Filing delay ⓘDays between the trade and the report. Over 45 days is late under the STOCK Act. | Source |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ro Khanna Politician | Jan 6, 2026 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMIN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Feb 6, 2026 | 31 days | PTR ↗ |
| Ro Khanna Politician | Jan 13, 2026 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMIN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Child | — | Feb 6, 2026 | 24 days | PTR ↗ |
| Ro Khanna Politician | Jan 13, 2026 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMIN scanned | Sale | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | Feb 6, 2026 | 24 days | PTR ↗ |
| Ro Khanna Politician | Jan 6, 2026 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Feb 6, 2026 | 31 days | PTR ↗ |
| Ro Khanna Politician | Jan 9, 2026 | UCTT | ULTRA CLEAN HOLDINGS, INC. CIN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | Feb 6, 2026 | 28 days | PTR ↗ |
| Ro Khanna Politician | Nov 19, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMIN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | Dec 8, 2025 | 19 days | PTR ↗ |
| Ro Khanna Politician | Nov 5, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | Dec 8, 2025 | 33 days | PTR ↗ |
| Ro Khanna Politician | Oct 14, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Sale | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Nov 6, 2025 | 23 days | PTR ↗ |
| Ro Khanna Politician | Oct 14, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC, CMIN scanned | Exchange | $15,001 - $50,000 | Est. $32,500 (midpoint of reported range $15,001–$50,000) | Spouse | — | Nov 6, 2025 | 23 days | PTR ↗ |
| Ro Khanna Politician | Oct 15, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Exchange | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | Nov 6, 2025 | 22 days | PTR ↗ |
| Ro Khanna Politician | Oct 23, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMIN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | Nov 6, 2025 | 14 days | PTR ↗ |
| Ro Khanna Politician | Oct 24, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMIN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | Nov 6, 2025 | 13 days | PTR ↗ |
| Ro Khanna Politician | May 13, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC.CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | Jun 10, 2025 | 28 days | PTR ↗ |
| Ro Khanna Politician | May 12, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Jun 10, 2025 | 29 days | PTR ↗ |
| Ro Khanna Politician | Apr 30, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | May 12, 2025 | 12 days | PTR ↗ |
| Ro Khanna Politician | Mar 10, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Apr 10, 2025 | 31 days | PTR ↗ |
| Ro Khanna Politician | Mar 4, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC, CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Apr 10, 2025 | 37 days | PTR ↗ |
| Ro Khanna Politician | Mar 10, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | Apr 10, 2025 | 31 days | PTR ↗ |
| Ro Khanna Politician | Mar 6, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Apr 10, 2025 | 35 days | PTR ↗ |
| Ro Khanna Politician | Mar 11, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | Apr 10, 2025 | 30 days | PTR ↗ |
| Ro Khanna Politician | Feb 25, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Mar 6, 2025 | 9 days | PTR ↗ |
| Ro Khanna Politician | Feb 25, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMIN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Mar 6, 2025 | 9 days | PTR ↗ |
| Ro Khanna Politician | Feb 26, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Mar 6, 2025 | 8 days | PTR ↗ |
| Ro Khanna Politician | Feb 25, 2025 | UCTT | CMN ULTRA CLEAN HOLDINGS, INC scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Mar 6, 2025 | 9 days | PTR ↗ |
| Ro Khanna Politician | Feb 26, 2025 | UCTT | ULTRA CLEAN HOLDINGS, INC. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Mar 6, 2025 | 8 days | PTR ↗ |