GCT Semiconductor Holding, Inc. (GCTS) — Institutional Holders, Q2 2026
55 institutional investment managers reported a GCTS position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $37.3M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
GCTS in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- RENAISSANCE TECHNOLOGIESNew · +1,695,300 sh+$5.0M
- MARSHALL WACE, LLPNew · +1,296,433 sh+$3.9M
- VANGUARD CAPITAL MANAGEMENTAdded · +1,254,181 sh+$3.7M
- TUDOR INVESTMENT ET ALNew · +818,485 sh+$2.4M
- BlackRockAdded · +683,217 sh+$2.0M
Biggest sellers
- Point72 Asset Management, L.P.Sold out · -51,604 sh-$153.3K
- HRT FINANCIALSold out · -35,818 sh-$106.4K
- Schonfeld Strategic AdvisorsSold out · -13,200 sh-$39.2K
- MAI Capital ManagementSold out · -4,400 sh-$13.1K
- SRS Capital AdvisorsTrimmed · -3,040 sh-$9.0K
GCTS 13F holders ranked 1–55 of 55
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT#1 · 2,999,130 sh | 2,999,130 | $8.9M | <0.01% | +71.9% |
| 2 | RENAISSANCE TECHNOLOGIES#2 · 1,695,300 sh | 1,695,300 | $5.0M | <0.01% | New |
| 3 | MARSHALL WACE, LLP#3 · 1,296,433 sh | 1,296,433 | $3.9M | <0.01% | New |
| 4 | BlackRock#4 · 1,281,164 sh | 1,281,164 | $3.8M | <0.01% | +114.3% |
| 5 | TUDOR INVESTMENT ET AL#5 · 818,485 sh | 818,485 | $2.4M | <0.01% | New |
| 6 | GEODE CAPITAL MANAGEMENT#6 · 767,459 sh | 767,459 | $2.3M | <0.01% | +61.8% |
| 7 | UBS Group AG#7 · 646,238 sh | 646,238 | $1.9M | <0.01% | +1629.6% |
| 8 | VANGUARD FIDUCIARY#8 · 416,917 sh | 416,917 | $1.2M | <0.01% | +69.3% |
| 9 | STATE STREET#9 · 353,089 sh | 353,089 | $1.0M | 0.00% | +46.8% |
| 10 | Informed Momentum#10 · 241,246 sh | 241,246 | $716.5K | 0.06% | New |
| 11 | XTX Topco Ltd#11 · 164,717 sh | 164,717 | $489.2K | <0.01% | +541.4% |
| 12 | NORTHERN#12 · 155,346 sh | 155,346 | $461.4K | <0.01% | +147.8% |
| 13 | Robertson Stephens Wealth Management#13 · 150,000 sh | 150,000 | $445.5K | — | New |
| 14 | SEI INVESTMENTS#14 · 142,901 sh | 142,901 | $424.4K | <0.01% | New |
| 15 | JANE STREET GROUP#15 · 133,082 sh | 133,082 | $395.3K | 0.00% | New |
| 16 | Team Hewins#16 · 125,640 sh | 125,640 | $373.2K | 0.10% | 0.0% |
| 17 | GOLDMAN SACHS GROUP#17 · 112,837 sh | 112,837 | $335.1K | 0.00% | +67.1% |
| 18 | ExodusPoint Capital Management#18 · 88,539 sh | 88,539 | $263.0K | <0.01% | New |
| 19 | CITADEL ADVISORS#19 · 77,168 sh | 77,168 | $229.2K | 0.00% | New |
| 20 | BRIDGEWAY CAPITAL MANAGEMENT#20 · 75,000 sh | 75,000 | $222.8K | <0.01% | 0.0% |
| 21 | Caitong International Asset Management , Ltd#21 · 65,817 sh | 65,817 | $195.5K | 0.03% | New |
| 22 | Focus Partners Wealth#22 · 64,000 sh | 64,000 | $190.1K | <0.01% | New |
| 23 | BANK OF AMERICA#23 · 63,164 sh | 63,164 | $187.6K | 0.00% | +0.2% |
| 24 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#24 · 58,713 sh | 58,713 | $174.4K | 0.00% | New |
| 25 | BRC Group#25 · 56,818 sh | 56,818 | $168.7K | 0.04% | 0.0% |
| 26 | INDEPENDENT FINANCIAL GROUP#26 · 49,250 sh | 49,250 | $146.3K | — | New |
| 27 | ROYAL BANK OF CANADA#27 · 49,213 sh | 49,213 | $146.0K | 0.00% | +2080.5% |
| 28 | MORGAN STANLEY#28 · 43,532 sh | 43,532 | $129.3K | 0.00% | +125.7% |
| 29 | LEUCADIA NATIONAL#29 · 39,400 sh | 39,400 | $117.0K | <0.01% | New |
| 30 | Spark Investment Management#30 · 37,100 sh | 37,100 | $110.2K | 0.21% | New |
| 31 | MILLENNIUM MANAGEMENT#31 · 31,956 sh | 31,956 | $94.9K | 0.00% | New |
| 32 | CITIGROUP#32 · 31,845 sh | 31,845 | $94.6K | 0.00% | New |
| 33 | TWO SIGMA INVESTMENTS#33 · 31,730 sh | 31,730 | $94.2K | <0.01% | New |
| 34 | Engineers Gate Manager#34 · 30,248 sh | 30,248 | $89.8K | <0.01% | +28.6% |
| 35 | Vanguard Global Advisers#35 · 27,623 sh | 27,623 | $82.0K | 0.00% | +166.1% |
| 36 | AXQ CAPITAL#36 · 25,898 sh | 25,898 | $76.9K | <0.01% | New |
| 37 | LPL Financial#37 · 20,935 sh | 20,935 | $62.2K | 0.00% | +109.3% |
| 38 | Braeburn Wealth Management#38 · 15,500 sh | 15,500 | $46.0K | — | 0.0% |
| 39 | Rockefeller Capital Management L.P.#39 · 15,000 sh | 15,000 | $44.5K | <0.01% | New |
| 40 | Bank of New York Mellon#40 · 12,675 sh | 12,675 | $37.6K | 0.00% | New |
| 41 | StoneX Group#41 · 12,835 sh | 12,835 | $37.4K | <0.01% | New |
| 42 | IMC-Chicago#42 · 10,700 sh | 10,700 | $31.8K | 0.00% | New |
| 43 | BARCLAYS PLC#43 · 7,090 sh | 7,090 | $21.1K | 0.00% | New |
| 44 | SIMPLEX TRADING#44 · 7,048 sh | 7,048 | $20.9K | 0.00% | New |
| 45 | JPMORGAN CHASE#45 · 6,213 sh | 6,213 | $15.9K | 0.00% | +3240.3% |
| 46 | FMR#46 · 3,718 sh | 3,718 | $11.0K | 0.00% | New |
| 47 | OSAIC#47 · 3,400 sh | 3,400 | $10.1K | 0.00% | +70.0% |
| 48 | Russell Investments Group, Ltd.#48 · 3,273 sh | 3,273 | $9.7K | 0.00% | 0.0% |
| 49 | JONES FINANCIAL COMPANIES LLLP#49 · 2,200 sh | 2,200 | $5.2K | 0.00% | New |
| 50 | SBI Securities , Ltd.#50 · 1,115 sh | 1,115 | $3.3K | — | +837.0% |
| 51 | Quarry#51 · 1,036 sh | 1,036 | $3.1K | <0.01% | New |
| 52 | BNP PARIBAS FINANCIAL MARKETS#52 · 578 sh | 578 | $1.7K | 0.00% | -2.9% |
| 53 | SRS Capital Advisors#53 · 85 sh | 85 | $252.00 | 0.00% | -97.3% |
| 54 | KERR FINANCIAL PLANNING#54 · 10 sh | 10 | $30.00 | 0.00% | New |
| 55 | Avion Wealth#55 · 153 sh | 153 | $0.00 | 0.00% | New |
Funds that sold out of GCTS in Q2 2026 (6)
Held GCTS at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| Point72 Asset Management, L.P.51,604 sh | 51,604 | $58.8K |
| HRT FINANCIAL35,818 sh | 35,818 | $40.0K |
| Schonfeld Strategic Advisors13,200 sh | 13,200 | $15.0K |
| MAI Capital Management4,400 sh | 4,400 | $5.0K |
| Tower Research Capital (TRC)2,286 sh | 2,286 | $2.6K |
| Optiver Holding B.V.115 sh | 115 | $131.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.