GCT Semiconductor Holding, Inc. 13F holders
55 funds reported a position in GCT Semiconductor Holding, Inc. in their 13F for the quarter ended 30 June 2026, together 12.6 million shares worth $37.3 million. Against the quarter before, 28 opened a position, 19 added, 2 trimmed and 6 sold out; together they bought a net 8.5 million shares. The largest holders: Vanguard Capital Management LLC, Renaissance Technologies LLC and Marshall Wace, LLP.
Funds holding55+21 on Q1 2026
Shares they held12.6Mworth $37.3 million
Net bought on the quarter8.5M sharesabout $25.3 million at the funds' values
Funds buying to selling47 to 8opened or added, to cut or sold
Opened 28Added 19Held 6Trimmed 2Sold out 6
What each fund did in GCTS against its 13F for the quarter before; a change under 0.1% of a holding counts as held
Funds reporting a position in GCTS in their 13F, each quarter; hover a bar for the shares they held
Filed so far for the quarter to 30 September 2026
3,405 funds have filed their 13F for the quarter so far; the rest are due by 16 November 2026. Of those, 6 reported a position in GCT Semiconductor Holding, Inc.: 2 opened one, 2 added, 1 trimmed and 1 sold out, a net 438,613 shares bought.
| Fund | Change in shares | Shares now | Status | Filing |
|---|---|---|---|---|
| Robertson Stephens Wealth Management, LLC | +305,500 | 455,500 | added | 13F |
| Asset Management One Co., Ltd. | +124,610 | 124,610 | new | 13F |
| Caitong International Asset Management Co., Ltd | +39,848 | 105,665 | added | 13F |
| Y-Intercept (Hong Kong) Ltd | +17,931 | 17,931 | new | 13F |
| SBI Securities Co., Ltd. | -26 | 1,089 | trimmed | 13F |
| Independent Financial Group, LLC | -49,250 | 0 | sold out | 13F |
The largest moves in the name among the funds that have filed, against each fund's previous 13F.
The well-known funds
Of the 44 funds followed here, 6 reported a position in GCT Semiconductor Holding, Inc. in a 13F for the quarter ended 30 June 2026. The largest: Renaissance Technologies, 1.7 million shares worth $5.0 million, 0.0% of its reported book. New this quarter: Renaissance Technologies, Citadel Advisors, Millennium Management, Two Sigma Investments. Sold out: Point72 Asset Management. In the quarter, 6 funds added or opened a position and 1 trimmed or sold out; together they bought a net 2.1 million shares, about $6.2 million at the funds' own value per share on 30 June 2026. A change under 0.1% of a holding counts as held.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Renaissance Technologies | 1,695,300 | $5.0 million | 0.0% | +1,695,300 | new | 30 June 2026 | 13F |
| Geode Capital Management | 767,459 | $2.3 million | 0.0% | +293,113 | added | 30 June 2026 | 13F |
| Citadel Advisors | 77,168 | $229,189 | 0.0% | +77,168 | new | 30 June 2026 | 13F |
| Millennium Management | 31,956 | $94,909 | 0.0% | +31,956 | new | 30 June 2026 | 13F |
| Two Sigma Investments | 31,730 | $94,238 | 0.0% | +31,730 | new | 30 June 2026 | 13F |
| FMR LLC | 3,718 | $11,042 | 0.0% | +3,718 | new | 30 June 2026 | 13F |
| Point72 Asset Management | 0 | $0 | 0.0% | -51,604 | exited | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.The largest holders
| Fund | Shares | Share of all | Value | Of its book | Change in shares | Filing |
|---|---|---|---|---|---|---|
| Vanguard Capital Management LLC | 2,999,130 | 23.86% | $8.9 million | 0.00% | +1,254,181 | 13F |
| Renaissance Technologies LLC | 1,695,300 | 13.49% | $5.0 million | 0.01% | new | 13F |
| Marshall Wace, LLP | 1,296,433 | 10.31% | $3.9 million | 0.00% | new | 13F |
| BlackRock, Inc. | 1,281,164 | 10.19% | $3.8 million | 0.00% | +683,217 | 13F |
| Tudor Investment Corp. Et Al | 818,485 | 6.51% | $2.4 million | 0.01% | new | 13F |
| Geode Capital Management, LLC | 767,459 | 6.11% | $2.3 million | 0.00% | +293,113 | 13F |
| UBS Group AG | 646,238 | 5.14% | $1.9 million | 0.00% | +608,875 | 13F |
| Vanguard Fiduciary Trust Co. | 416,917 | 3.32% | $1.2 million | 0.00% | +170,673 | 13F |
| State Street Corp. | 353,089 | 2.81% | $1.0 million | 0.00% | +112,500 | 13F |
| Informed Momentum Co LLC | 241,246 | 1.92% | $716,501 | 0.06% | new | 13F |
| XTX Topco Ltd | 164,717 | 1.31% | $489,209 | 0.01% | +139,038 | 13F |
| Northern Trust Corp. | 155,346 | 1.24% | $461,378 | 0.00% | +92,645 | 13F |
| Robertson Stephens Wealth Management, LLC | 150,000 | 1.19% | $445,500 | 0.01% | new | 13F |
| Sei Investments Co. | 142,901 | 1.14% | $424,416 | 0.00% | new | 13F |
| Jane Street Group, LLC | 133,082 | 1.06% | $395,254 | 0.00% | new | 13F |
| Team Hewins, LLC | 125,640 | 1.00% | $373,151 | 0.10% | no change | 13F |
| Goldman Sachs Group Inc. | 112,837 | 0.90% | $335,126 | 0.00% | +45,324 | 13F |
| ExodusPoint Capital Management, LP | 88,539 | 0.70% | $262,961 | 0.00% | new | 13F |
| Citadel Advisors LLC | 77,168 | 0.61% | $229,189 | 0.00% | new | 13F |
| Bridgeway Capital Management, LLC | 75,000 | 0.60% | $222,750 | 0.00% | no change | 13F |
| Caitong International Asset Management Co., Ltd | 65,817 | 0.52% | $195,476 | 0.03% | +65,798 | 13F |
| Focus Partners Wealth | 64,000 | 0.51% | $190,080 | 0.00% | new | 13F |
| Bank of America Corp. | 63,164 | 0.50% | $187,597 | 0.00% | +151 | 13F |
| Susquehanna International Group, LLP | 58,713 | 0.47% | $174,378 | 0.00% | new | 13F |
| BRC Group Holdings, Inc. | 56,818 | 0.45% | $168,749 | 0.04% | no change | 13F |
| Independent Financial Group, LLC | 49,250 | 0.39% | $146,273 | 0.00% | new | 13F |
| Royal Bank of Canada | 49,213 | 0.39% | $146,000 | 0.00% | +46,956 | 13F |
| Morgan Stanley | 43,532 | 0.35% | $129,290 | 0.00% | +24,243 | 13F |
| Jefferies Financial Group Inc. | 39,400 | 0.31% | $117,018 | 0.00% | new | 13F |
| Spark Investment Management LLC | 37,100 | 0.30% | $110,187 | 0.21% | 13F | |
| Millennium Management LLC | 31,956 | 0.25% | $94,909 | 0.00% | new | 13F |
| Citigroup Inc. | 31,845 | 0.25% | $94,580 | 0.00% | new | 13F |
| Two Sigma Investments, LP | 31,730 | 0.25% | $94,238 | 0.00% | new | 13F |
| Engineers Gate Manager LP | 30,248 | 0.24% | $89,837 | 0.00% | +6,732 | 13F |
| Vanguard Global Advisers, LLC | 27,623 | 0.22% | $82,040 | 0.00% | +17,242 | 13F |
| Axq Capital, LP | 25,898 | 0.21% | $76,917 | 0.01% | new | 13F |
| LPL Financial LLC | 20,935 | 0.17% | $62,177 | 0.00% | +10,935 | 13F |
| Braeburn Wealth Management LLC | 15,500 | 0.12% | $46,035 | 0.02% | no change | 13F |
| Rockefeller Capital Management L.P. | 15,000 | 0.12% | $44,550 | 0.00% | new | 13F |
| Bank of New York Mellon Corp | 12,675 | 0.10% | $37,646 | 0.00% | new | 13F |
| StoneX Group Inc. | 12,835 | 0.10% | $37,386 | 0.00% | new | 13F |
| IMC-Chicago, LLC | 10,700 | 0.09% | $31,779 | 0.00% | new | 13F |
| Barclays PLC | 7,090 | 0.06% | $21,057 | 0.00% | new | 13F |
| Simplex Trading, LLC | 7,048 | 0.06% | $20,932 | 0.00% | new | 13F |
| JPMorgan Chase & Co. | 6,213 | 0.05% | $15,905 | 0.00% | +6,027 | 13F |
| FMR LLC | 3,718 | 0.03% | $11,042 | 0.00% | new | 13F |
| Osaic Holdings, Inc. | 3,400 | 0.03% | $10,098 | 0.00% | +1,400 | 13F |
| Russell Investments Group, Ltd. | 3,273 | 0.03% | $9,721 | 0.00% | no change | 13F |
| Jones Financial Companies Lllp | 2,200 | 0.02% | $5,170 | 0.00% | new | 13F |
| SBI Securities Co., Ltd. | 1,115 | 0.01% | $3,312 | 0.00% | +996 | 13F |
The 50 largest of the 55 funds that reported a position in GCTS in their 13F for the quarter ended 30 June 2026, by the value each reported.
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Share of all is the fund's part of all the shares the funds reported. Change is shares against the fund's 13F for the quarter before. A 13F lists a manager's long positions in US-listed shares at the quarter's end. What is a 13F?Options the funds reported on GCTS
| Fund | Option | Shares under the options | Value of those shares | Quarter ended | Filing |
|---|---|---|---|---|---|
| Citadel Advisors | Calls | 30,300 | $89,991 | 30 June 2026 | 13F |
| Citadel Advisors | Puts | 12,800 | $38,016 | 30 June 2026 | 13F |
A 13F lists calls and puts by the shares they cover and what those shares were worth at the quarter's end, not what the options cost.
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They are not counted in the holdings above. A put gains when the stock falls, a call when it rises, and a fund may hold either to hedge.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 15 May 2026 | 13G/A | TD Securities (Usa) LLC and 7 others | 3.5 million | 4.6% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 13 February 2026 | 13G/A | TD Securities (Usa) LLC and 7 others | 3.7 million | 6.1% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short. 13D and 13GFails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 31 August 2026 | 12,717 | $1.86 | SEC |
| 28 August 2026 | 10,446 | $1.91 | SEC |
| 24 August 2026 | 16,439 | $2.04 | SEC |
| 21 August 2026 | 6,270 | $1.99 | SEC |
| 19 August 2026 | 75,208 | $1.93 | SEC |
| 18 August 2026 | 1,560 | $2.09 | SEC |
| 13 August 2026 | 5,959 | $2.17 | SEC |
| 12 August 2026 | 31,902 | $2.04 | SEC |
| 11 August 2026 | 9,641 | $2.45 | SEC |
| 10 August 2026 | 118,922 | $2.55 | SEC |
| 6 August 2026 | 5,475 | $2.27 | SEC |
| 3 August 2026 | 25,048 | $1.86 | SEC |
| 28 July 2026 | 1,518 | $1.98 | SEC |
| 22 July 2026 | 7,857 | $2.17 | SEC |
| 20 July 2026 | 59 | $2.10 | SEC |
| 17 July 2026 | 17,556 | $2.12 | SEC |
| 15 July 2026 | 2,724 | $2.39 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.