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Ultra Clean UCTT

US equityMarket cap rank #2400
$74.02 +$1.33 (+1.83%)
Market closed · Oct 5, 11:20 pm ET · Last extended-hours $74.02 0.00%
Open$71.98
Prev close$72.69
Day range$71.42 – $76.26
Volume1.39M
Market cap$3.35B
P/E (TTM)–
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership103.5%+0.17 pts vs. prior quarter
Institutions holding508+4 vs. prior quarter
Insider trades (recent)20 buys / 29 sellsNet selling
Short interest7.99% of floatDays to cover 4.4 · as of 15 Sep 2026
Short-sale volume share11.9%5-day average of daily volume

Short-sale volume as % of daily volume

9%12%14%17%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$929.7K (7 inflow days, 13 outflow days).

The five largest holders on file together own 36.2% of shares outstanding.

Largest holders

  • BlackRock15.28%
  • Vanguard Portfolio Management, LLC6.09%
  • Capital Research5.70%
  • Vanguard Capital Management, LLC4.92%
  • Invesco Ltd.4.23%
  • State Street Global Advisors3.98%
  • Boston Partners Global Investors, Inc.3.00%
  • Geode Capital Management, LLC2.91%

By investor type

  • Mutual Fund88.24%
  • Hedge Fund8.35%
  • Public Company3.21%
  • Individual/Insider2.06%
  • Government Pension Fund1.61%
  • Private Company1.39%
  • Family Office/Trust0.37%
  • Insurance Company0.18%

Reported short interest has risen from 7.19% to 7.99% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 3,618,539 8.0% 4.4
31 Aug 2026 3,611,264 8.0% 4.2
14 Aug 2026 3,155,174 7.0% 2.3
31 Jul 2026 3,343,289 7.5% 2.4
15 Jul 2026 3,555,892 7.9% 2.2
30 Jun 2026 3,221,999 7.2% 2.1

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