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GCTS GCT SEMICONDUCTOR HLDG INC

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COMMON STOCK (common), issuer CIK 1851961

29 managers (29 13F filers) reported a position in GCTS shares at 2025-09-30, 3,841,844 shares in all. 8 filers opened a position and 10 filers sold out during the quarter.

Managers
29
13F filers
29
New
8
Added
4
Reduced
12
Sold out
10
Shares held by filers
3,841,844

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCin group VANGUARD GROUP INC1,583,800$2.41M<0.01%+50,79913F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.567,619$863K<0.01%-3,61313F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC397,077$604K<0.01%+45,52713F-HRTimelineGroup
GM Advisory Group, LLC390,931$594K0.03%-2,25813F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC157,580$240K<0.01%new13F-HRTimeline
STATE STREET CORPin group STATE STREET CORP132,889$202K<0.01%013F-HRTimelineGroup
Team Hewins, LLC125,640$191K0.06%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC92,586$141K<0.01%+20,24313F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/63,649$96.7K<0.01%+18313F-HR/ATimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP62,701$95.3K<0.01%013F-HRTimelineGroup
BRC Group Holdings, Inc.56,818$86.4K0.06%013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP51,670$78.5K<0.01%new13F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC50,000$76K<0.01%new13F-HRTimeline
BLAIR WILLIAM & CO/IL30,854$46.9K<0.01%new13F-HRTimeline
Engineers Gate Manager LP23,189$35.2K<0.01%-1,63613F-HRTimeline
UBS Group AGin group UBS Group AG19,623$29.8K<0.01%-277,86413F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY17,299$26.3K<0.01%-1,42113F-HR/ATimelineGroup
HRT FINANCIAL LP12,268$18K<0.01%-26,47713F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…3,273$4.97K<0.01%-40213F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS727$1.1K<0.01%013F-HRTimelineGroup
CWM, LLCin group CWM, LLC867$1K<0.01%-1,92913F-HRTimelineGroup
SBI Securities Co., Ltd.302$459<0.01%013F-HRTimeline
FMR LLCin group FMR LLC151$230<0.01%-1,22713F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC114$173<0.01%new13F-HRTimelineGroup
Optiver Holding B.V.in group Optiver Holding B.V.114$173<0.01%new13F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO91$138<0.01%-53613F-HR/ATimelineGroup
Arax Advisory Partners9$13<0.01%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC2$3<0.01%-6213F-HR/ATimelineGroup
TORONTO DOMINION BANKin group TORONTO DOMINION BANK1$2<0.01%-221,77013F-HRTimelineGroup