ULTRA CLEAN HOLDINGS INC (UCTT) Institutional Ownership Changes & 13F Activity

ULTRA CLEAN HOLDINGS INC (UCTT). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include First Eagle U.S. Value, Renaissance Technologies LLC, and ARK Invest.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2018ARK InvestBuy1,17724,935$480
Q4 2017ARK InvestSell-1,85323,758$549
Q3 2017Renaissance Technologies LLCSell-364,700215,900$6,611
Q3 2017ARK InvestBuy1,05125,611$784
Q2 2017Renaissance Technologies LLCSell-136,100580,600$10,886
Q2 2017ARK InvestBuy6,04624,560$461
Q1 2017Renaissance Technologies LLCSell-46,800716,700$12,091
Q1 2017ARK InvestSell-15,22318,514$312
Q4 2016Renaissance Technologies LLCBuy497,100763,500$7,406
Q4 2016ARK InvestBuy33,73733,737$327
Q3 2016Renaissance Technologies LLCBuy66,134266,400$1,974
Q2 2016Renaissance Technologies LLCSell-90,134200,266$1,140
Q1 2016Renaissance Technologies LLCSell-10,500290,400$1,557
Q4 2015Renaissance Technologies LLCBuy130,200300,900$1,541
Q3 2015Renaissance Technologies LLCBuy41,300170,700$980
Q2 2015Renaissance Technologies LLCBuy82,800129,400$806
Q1 2015Renaissance Technologies LLCSell-402,48246,600$333
Q1 2014Renaissance Technologies LLCBuy274,882449,082$5,905
Q4 2013Renaissance Technologies LLCBuy83,790174,200$1,747
Q3 2013Renaissance Technologies LLCBuy16,70690,410$625
Q2 2013Renaissance Technologies LLCBuy73,70473,704$446

Frequently asked questions about UCTT activity

  • Which institutional owners are buying UCTT?

    Institutional owners buying UCTT include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in UCTT activity?

    "Buy" means an investor increased their reported position in UCTT compared to the prior reporting period. This reflects growing exposure to ULTRA CLEAN HOLDINGS INC (UCTT) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in UCTT increasing?

    Institutional interest in UCTT can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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