Among active 13F managers last quarter, 11 opened and 5 added, while 1 reduced; the largest holder to move was Tudor Investment Corp Et Al (new position). No open-market insider trades in the last 180 days.
Funds lean in and no leg opposes.
42 tracked 13F filers disclose a position in GCTS as of the latest SEC 13F filings, a combined $23.8M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Vanguard Capital Management LLC | 3.0M | $8.9M | ▲+72% Added · +1.3M sh | Q2 2026 | |
| 2 | BlackRock, Inc. | 1.3M | $3.8M | ▲+114% Added · +683K sh | Q2 2026 | |
| 3 | Tudor Investment Corp Et Al | 818K | $2.4M | ▲New +818K sh | Q2 2026 | |
| 4 | Geode Capital Management, LLC | 767K | $2.3M | ▲+62% Added · +293K sh | Q2 2026 | |
| 5 | GM Advisory Group, LLC | 434K | $495K | ▲+167% Added · +272K sh | Q1 2026 | |
| 6 | Vanguard Fiduciary Trust Co | 417K | $1.2M | ▲+69% Added · +171K sh | Q2 2026 | |
| 7 | State Street Corp | 353K | $1.0M | ▲+47% Added · +113K sh | Q2 2026 | |
| 8 | Informed Momentum Co LLC | 241K | $717K | ▲New +241K sh | Q2 2026 | |
| 9 | Robertson Stephens Wealth Management, LLC | 150K | $446K | ▲New +150K sh | Q2 2026 | |
| 10 | Team Hewins, LLC | 126K | $373K | —Held | Q2 2026 | |
| 11 | ExodusPoint Capital Management, LP | 89K | $263K | ▲New +89K sh | Q2 2026 | |
| 12 | Citadel Advisors LLC | 77K | $229K | ▲New +77K sh | Q2 2026 | |
| 13 | Bridgeway Capital Management, LLC | 75K | $223K | —Held | Q2 2026 | |
| 14 | Goldman Sachs Group Inc | 68K | $77K | ▲+7.0% Added · +4K sh | Q1 2026 | |
| 15 | Caitong International Asset Management Co., Ltd | 66K | $195K | ▲3k× Added · +66K sh | Q2 2026 | |
| 16 | Bank Of America Corp | 63K | $72K | ▼−0.7% Reduced · −419 sh | Q1 2026 | |
| 17 | Northern Trust Corp | 63K | $71K | —Held | Q1 2026 | |
| 18 | BRC Group Holdings, Inc. | 57K | $169K | —Held | Q2 2026 | |
| 19 | Independent Financial Group, LLC | 49K | $146K | ▲New +49K sh | Q2 2026 | |
| 20 | Jefferies Financial Group Inc. | 39K | $117K | ▲New +39K sh | Q2 2026 | |
| 21 | UBS Group AG | 37K | $43K | ▲+88% Added · +18K sh | Q1 2026 | |
| 22 | Engineers Gate Manager LP | 30K | $90K | ▲+29% Added · +7K sh | Q2 2026 | |
| 23 | Vanguard Global Advisers, LLC | 28K | $82K | ▲+166% Added · +17K sh | Q2 2026 | |
| 24 | Axq Capital, LP | 26K | $77K | ▲New +26K sh | Q2 2026 | |
| 25 | XTX Topco Ltd | 26K | $29K | ▲+21% Added · +4K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 11 funds opened a new position in GCTS and 5 added to an existing one, while 1 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Their position there |
|---|---|---|
| Nvidia CorpNVDA | 17 funds | $9.8B |
| Amazon.com IncAMZN | 17 funds | $6.5B |
| Advanced Micro DevicesAMD | 17 funds | $1.8B |
| Berkshire Hathaway Inc-CL BBRK/B | 17 funds | $1.3B |
| Schwab (Charles) CorpSCHW | 17 funds | $601.3M |
| Apple IncAAPL | 16 funds | $7.8B |
| Microsoft CorpMSFT | 16 funds | $6.1B |
| Meta Platforms Inc-Class AMETA | 16 funds | $2.8B |
| Eli Lilly & CoLLY | 16 funds | $2.1B |
| Tesla IncTSLA | 16 funds | $2.1B |
| JPMorgan Chase & CoJPM | 16 funds | $1.7B |
| Lam Research CorpLRCX | 16 funds | $1.2B |
Ranked by how many of GCTS's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in GCTS.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Nov 25, 2025 | Shin Hyunsoo | Director | Buy (P) | 17K | $21K |
| Nov 21, 2025 | Shin Hyunsoo | Director | Buy (P) | 3K | $4K |
| Nov 20, 2025 | Shin Hyunsoo | Director | Buy (P) | 25K | $33K |
| Sep 12, 2025 | Shin Hyunsoo | Director | Buy (P) | 44K | $67K |
| Sep 5, 2025 | Shin Hyunsoo | Director | Buy (P) | 10K | $13K |
| Sep 4, 2025 | Shin Hyunsoo | Director | Buy (P) | 8K | $10K |
| Aug 15, 2025 | Shin Hyunsoo | Director | Buy (P) | 121K | $152K |
| Jun 10, 2025 | Shin Hyunsoo | Director | Buy (P) 2 lots, same day | 85K | $100K |
| Jun 5, 2025 | Shin Hyunsoo | Director | Buy (P) 2 lots, same day | 80K | $82K |
| Jun 4, 2025 | Shin Hyunsoo | Director | Buy (P) | 80K | $82K |
| May 23, 2025 | Shin Hyunsoo | Class II Director, Director | Buy (P) | 77K | $80K |
| May 20, 2025 | Shin Hyunsoo | Class II Director, Director | Buy (P) | 86K | $101K |
One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 14 | 3 | – |
Insiders Form 4 open-market | 0 | 0 | $0 |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
| Class | 13F holders | Value held |
|---|---|---|
| GCTSthis pageEquity | 42 funds | $23.8M |
| GCTS/WSWTS | 23 funds | $4.1M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for GCTS
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/GCTS/capital-change-brief"
Use Arkolith's capital_change_brief for GCTS. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for GCTS. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.