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UCTT in the 13F filings

Ultra Clean HLDGS Inc · CUSIP 90385V107

Sector · SemiconductorsTheme · AI infrastructure and semiconductors· L3VLUP-definedTheme · Semiconductors
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
32
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 5 listed it in both
Shares listed
9,627,484
combined, among listed positions
Reported value
$1.3bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 17 buyers (opened or added shares) and 17 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +3,538,467.

Managers listing UCTT in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

32 of 32 holders

ActionFiling
Invesco Ltd3,124,839$446munder 0.1%Added+1,464,89014 Aug 2026 (the filing on sec.gov)
Capital World Investors2,580,132$368munder 0.1%Newnew12 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.619,802$88munder 0.1%Trimmed-563,45514 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP609,851$87m0.06%Added+28,72014 Aug 2026 (the filing on sec.gov)
Millennium Management LLC388,205$55munder 0.1%Trimmed-297,23114 Aug 2026 (the filing on sec.gov)
First Eagle Investment Management LLC347,930$50m0.08%Trimmed-86,1705 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP793,936$49munder 0.1%Added+736,75414 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC210,149$30munder 0.1%Added+31,36714 Aug 2026 (the filing on sec.gov)
Marshall Wace LLP144,176$21munder 0.1%Trimmed-115,67613 Aug 2026 (the filing on sec.gov)
Winton Group Ltd97,320$14m0.45%Trimmed-6,9207 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC91,900$13munder 0.1%Newnew13 Aug 2026 (the filing on sec.gov)
Walleye Capital LLC85,088$12munder 0.1%Trimmed-2,3653 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC82,499$12munder 0.1%Trimmed-56,7242 Sep 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP68,707$9.8m0.07%Added+60,93614 Aug 2026 (the filing on sec.gov)
Point72 Asset Management LP62,439$8.9munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc60,820$8.7munder 0.1%Added+8,73514 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP53,796$7.7munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Tudor Investment Corp44,249$6.3munder 0.1%Added+6,68014 Aug 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP41,767$6.0munder 0.1%Trimmed-10,29514 Aug 2026 (the filing on sec.gov)
Caxton Associates LLP25,937$3.7m0.07%Added+1,96014 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP21,264$3.0munder 0.1%Trimmed-14,38114 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd19,373$2.8munder 0.1%Held014 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)13,448$1.9munder 0.1%Trimmed-47113 Aug 2026 (the filing on sec.gov)
Quantbot Technologies LP8,237$1.2munder 0.1%Trimmed-40612 Aug 2026 (the filing on sec.gov)
MFS Investment Management7,452$1.1munder 0.1%Newnew3 Aug 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (8)

Exited (3)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
3 in Q3 2024 to 11 in Q2 2026

Tracked managers listing it, at least.

05101520142017201820192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
UCTT by quarter
QuarterHoldersReported valueBuyersSellers
Q1 20141$166kn.a.n.a.
Q4 20151$384kn.a.n.a.
Q4 20161$327kn.a.n.a.
Q1 20174$5.6mn.a.n.a.
Q2 20175$7.4mn.a.n.a.
Q3 20175$47mn.a.n.a.
Q4 20175$39mn.a.n.a.
Q1 20181$480kn.a.n.a.
Q2 20181$596kn.a.n.a.
Q3 20182$1.8mn.a.n.a.
Q4 20181$334kn.a.n.a.
Q1 20191$467kn.a.n.a.
Q2 20191$428kn.a.n.a.
Q3 20192$1.7mn.a.n.a.
Q4 20194$17mn.a.n.a.
Q1 20203$4.2mn.a.n.a.
Q2 20201$376kn.a.n.a.
Q3 20201$370kn.a.n.a.
Q4 20201$1.2mn.a.n.a.
Q1 20212$7.5mn.a.n.a.
Q2 20213$8.0mn.a.n.a.
Q3 20211$329kn.a.n.a.
Q4 20211$637kn.a.n.a.
Q1 20222$4.7mn.a.n.a.
Q2 20222$5.8mn.a.n.a.
Q3 20221$3.4mn.a.n.a.
Q4 20221$5.3mn.a.n.a.
Q1 20233$38mn.a.n.a.
Q2 20233$42mn.a.n.a.
Q3 20233$37mn.a.n.a.
Q4 20233$50m21
Q1 20243$49m03
Q2 20242$18m11
Q3 20243$17m20
Q4 20241$14m10
Q1 20251$8.7m10
Q2 20251$8.1m01
Q3 20251$11m10
Q4 20252$13m187
Q1 20265$110m1911
Q2 202611$1.1bn1717

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

UCTT and NVDA →UCTT and AVGO →UCTT and MU →Choose a stock to compare with UCTT →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own UCTT, latest filings →Back to the 13F Explorer →