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UCTT · Ultra Clean Holdings, Inc.

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Market Cap
$3.01B
Shares
45.28M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 439
Total Value: $7,349,474,037
Total Shares: 51,550,341
Showing 1–100 of 460 holdings by value · page 1 of 5

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 439 13F filers · Δ vs Mar 31, 2026
Top Holder
13.4%
Sep 2023 → Jun 2026 · range 13.4% – 17.8%
−0.2 pts
Top 5
34.1%
Sep 2023 → Jun 2026 · range 31.7% – 48.3%
+2.4 pts
Top 10
50.6%
Sep 2023 → Jun 2026 · range 47.5% – 67.3%
+3.1 pts
HHI
388
Sep 2023 → Jun 2026 · range 371 – 670
Broadly held+17

Quarterly Activity

vs Mar 31, 2026
New
146
Increased
98
Decreased
161
Sold Out
39
Unchanged
34
Holder count: +107
Institutional value: +135.6%
Shares held: +2.7%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 460
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1275014 CUSIP 90385V107 13F (30d) 301 filings 295 filers Visit website Investor relations