The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query GCTK owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/GCTK"
Use Arkolith to show who owns GCTK, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BOOTHBAY FUND MANAGEMENT, LLC | $9K | 14K | —Held | Q1 2026 | |
| 2 | VANGUARD FIDUCIARY TRUST CO | $3K | 5K | ▲New +5K sh | Q1 2026 | |
| 3 | ALERUS FINANCIAL NA | $3K | 4K | —Held | Q1 2026 | |
| 4 | SBI Securities Co., Ltd. | $6 | 9 | —Held | 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Oct 3, 2025 | Malave Luis | Director | Grant (A) | 4K | $0 |
| Oct 3, 2025 | Balo Andrew K | Director | Grant (A) | 1K | $0 |
| Oct 3, 2025 | Carter Erin Catherine | Director | Grant (A) | 4K | $0 |
| Oct 3, 2025 | Carter Erin Catherine | Director | Grant (A) | 386 | $0 |
| Oct 3, 2025 | Balo Andrew K | Director | Grant (A) | 4K | $0 |
| Oct 3, 2025 | Malave Luis | Director | Grant (A) | 463 | $0 |
| Jul 11, 2025 | Malave Luis | Director | Grant (A) | 1K | $0 |
| Jul 11, 2025 | Balo Andrew K | Director | Grant (A) | 3K | $0 |
| Jul 11, 2025 | Carter Erin Catherine | Director | Grant (A) | 1K | $0 |
| Mar 26, 2025 | Fischell Robert | Director | Grant (A) | 1K | $0 |
| Mar 26, 2025 | Carter Erin Catherine | Director | Grant (A) | 2K | $0 |
| Mar 26, 2025 | Malave Luis | Director | Grant (A) | 2K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 3 funds | $519.1M |
| APPLE INCAAPL | 3 funds | $170.3M |
| AMAZON.COM INCAMZN | 3 funds | $152.4M |
| ALPHABET INC-CL AGOOGL | 3 funds | $128.9M |
| MICROSOFT CORPMSFT | 3 funds | $120.4M |
| TESLA INCTSLA | 3 funds | $116.8M |
| INVESCO QQQ TRUST SERIES 1QQQ | 3 funds | $114.8M |
| PALANTIR TECHNOLOGIES INC-APLTR | 3 funds | $79.9M |
| ALPHABET INC-CL CGOOG | 3 funds | $60.2M |
| BROADCOM INCAVGO | 3 funds | $59.5M |
| MICRON TECHNOLOGY INCMU | 3 funds | $50.8M |
| META PLATFORMS INC-CLASS AMETA | 3 funds | $49.6M |
Ranked by how many of GCTK's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for GCTK. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.