Company · Ownership research

GCT Semiconductor Holding, Inc. GCTS

CIK 0001851961 · CUSIP 36170N107

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 36170N107 (GCTS), not CUSIP 36170N907 (GCTS), CUSIP 36170N957 (GCTS), and does not merge CUSIPs.

This page lists the top 20 of 44 rows by value; the complete set is available through the API.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$1.45M 881,941 shares	0.00%	+147.74K(+20.10%)Added	SEC filing ↗ May 9, 2025	▾
02	BlackRock, Inc. CIK 2012383 · View history	$1.42M 868,313 shares	0.00%	-8.12K(-0.90%)Reduced	SEC filing ↗ May 2, 2025	▾
03	UBS Group AG CIK 1610520 · View history	$823.71K 502,264 shares	0.00%	+478.03K(+1,972.70%)Added	SEC filing ↗ May 13, 2025	▾
04	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$715.22K 435,940 shares	0.00%	+10.79K(+2.50%)Added	SEC filing ↗ May 13, 2025	▾
05	STATE STREET CORP CIK 93751 · View history	$268.77K 163,884 shares	0.00%	+1.20K(+0.70%)Added	SEC filing ↗ May 15, 2025	▾
06	NORTHERN TRUST CORP CIK 73124 · View history	$176.83K 107,826 shares	0.00%	+1.34K(+1.30%)Added	SEC filing ↗ May 13, 2025	▾
07	MOORE CAPITAL MANAGEMENT, LP CIK 1448574 · Amended · View history	$116.85K 71,250 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 12, 2025	▾
08	GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history	$114.66K 69,917 shares	0.00%	+25.54K(+57.50%)Added	SEC filing ↗ May 16, 2025	▾
09	Periscope Capital Inc. CIK 1695320 · View history	$106.60K 65,000 shares	0.06%	-35.00K(-35.00%)Reduced	SEC filing ↗ May 13, 2025	▾
10	B. Riley Financial, Inc. CIK 1464790 · View history	$93.18K 56,818 shares	0.12%	+56.82KNew	SEC filing ↗ Feb 3, 2026	▾
11	683 Capital Management, LLC CIK 1404574 · View history	$84.77K 51,689 shares	0.01%	-48.31K(-48.30%)Reduced	SEC filing ↗ May 15, 2025	▾
12	FMR LLC CIK 315066 · Amended · View history	$76.75K 46,802 shares	0.00%	+6.74K(+16.80%)Added	SEC filing ↗ Nov 5, 2026	▾
13	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · Amended · View history	$70.41K 42,932 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Sep 15, 2025	▾
14	STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM CIK 938076 · View history	$43.21K 26,350 shares	0.00%	+26.35KNew	SEC filing ↗ May 12, 2025	▾
15	BOOTHBAY FUND MANAGEMENT, LLC CIK 1549230 · View history	$42.59K 25,971 shares	0.00%	+25.97KNew	SEC filing ↗ May 15, 2025	▾
16	MORGAN STANLEY CIK 895421 · View history	$39.98K 24,379 shares	0.00%	-10.58K(-30.30%)Reduced	SEC filing ↗ May 15, 2025	▾
17	Quarry LP CIK 1965207 · View history	$38.56K 23,510 shares	0.01%	+23.51KNew	SEC filing ↗ May 15, 2025	▾
18	AQR CAPITAL MANAGEMENT LLC CIK 1167557 · View history	$29.77K 18,151 shares	0.00%	+4.29K(+30.90%)Added	SEC filing ↗ May 15, 2025	▾
19	Bank of New York Mellon Corp CIK 1390777 · View history	$26.29K 16,028 shares	0.00%	-2(0.00%)Reduced	SEC filing ↗ Apr 29, 2025	▾
20	ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history	$24.57K 14,980 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2025	▾

Showing 20 / 44 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

3,582,320

Not deduplicated across managers

Disclosed value

$5.87M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

GCT Semiconductor Holding, Inc. · Q1 2025

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.