GCT Semiconductor Holding GCTS Institutional Ownership

Updated Oct 5, 2026

GCT Semiconductor Holding, Inc. (NYSE:GCTS) was reported as a holding by 55 institutional investors in 13F filings for the quarter ended June 30, 2026.

• Together they owned 15.23% of the outstanding stock in Q2 2026, up from 6.74% a quarter earlier.
• Total shares held in GCT Semiconductor Holding rose 182.47% from Q1 2026, while the number of holders rose 83.33% from Q2 2025.
• Of the 55 holders, 48 added to their positions, 2 reduced their stakes and 5 left their positions unchanged in Q2 2026.
• Altogether, institutional holders owned 12.57Mn GCTS shares at the end of Q2 2026, up 8.12Mn from the prior quarter and up 8.4Mn from a year earlier.
• Vanguard Capital Management LLC held the largest position in GCTS at 3Mn shares as of June 30, 2026, or 3.63% of shares outstanding.
• The largest position increases in GCTS for Q2 2026 were by Vanguard Capital Management LLC (+1.25Mn shares), BlackRock, Inc. (+683.22K shares), UBS Group AG (+608.88K shares), Geode Capital Management, LLC (+293.11K shares) and Vanguard Fiduciary Trust Co (+170.67K shares).
• The largest position reductions in GCTS for Q2 2026 were by Arax Advisory Partners (-3.04K shares) and BNP Paribas Financial Markets (-17 shares).
• Per Business Quant, the top 10 investors in GCTS for the quarter ended June 30, 2026 were Vanguard Capital Management LLC (3Mn shares), Renaissance Technologies LLC (1.7Mn shares), Marshall Wace, LLP (1.3Mn shares), BlackRock, Inc. (1.28Mn shares), Tudor Investment Corp (818.49K shares), Geode Capital Management, LLC (767.46K shares), UBS Group AG (646.24K shares), Vanguard Fiduciary Trust Co (416.92K shares), State Street Corp (353.09K shares) and Informed Momentum Co LLC (241.25K shares).