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 GDL 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/GDL"
Use Arkolith to show who owns GDL, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Ancora Advisors LLC | $1.5M | 175K | —Held | Q1 2026 | |
| 2 | NewEdge Advisors, LLC | $1.1M | 128K | ▲+0.7% Added · +888 sh | Q1 2026 | |
| 3 | CSS LLC/IL | $972K | 117K | —Held | Q1 2026 | |
| 4 | EVOLVE PRIVATE WEALTH, LLC | $161K | 19K | —Held | Q1 2026 | |
| 5 | Private Advisor Group, LLC | $125K | 15K | ▲+25% Added · +3K sh | Q1 2026 | |
| 6 | CREATIVE FINANCIAL DESIGNS INC /ADV | $14K | 2K | —Held | Q1 2026 | |
| 7 | TD Waterhouse Canada Inc. | $2K | 300 | ▲New +300 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Feb 23, 2026 | GABELLI MARIO J | Director, 10% Owner | Sell (S) | 800 | $7K |
| Jan 9, 2026 | GABELLI MARIO J | Director, 10% Owner | Sell (S) | 800 | $7K |
| Nov 26, 2024 | GABELLI MARIO J | Director, 10% Owner | Sell (S) | 3K | $20K |
| Aug 29, 2024 | GABELLI MARIO J | Director, 10% Owner | Sell (S) | 307 | $2K |
| Feb 22, 2024 | Ball John Chester | President & Treasurer | Buy (P) | 32 | $253 |
| Dec 11, 2023 | GABELLI MARIO J | Director, 10% Owner | Sell (S) | 2K | $16K |
| Aug 7, 2023 | GABELLI MARIO J | Director, 10% Owner | Buy (P) | 120 | $952 |
| Jul 31, 2023 | GABELLI MARIO J | Director, 10% Owner | Buy (P) | 500 | $4K |
| Company | Co-held by | Combined value |
|---|---|---|
| APPLE INCAAPL | 18 funds | $26.2B |
| MICROSOFT CORPMSFT | 18 funds | $17.8B |
| JOHNSON & JOHNSONJNJ | 18 funds | $12.7B |
| AMAZON.COM INCAMZN | 18 funds | $10.0B |
| PROCTER & GAMBLE CO/THEPG | 18 funds | $9.9B |
| META PLATFORMS INC-CLASS AMETA | 18 funds | $9.7B |
| PFIZER INCPFE | 18 funds | $9.6B |
| PEPSICO INCPEP | 18 funds | $8.8B |
| VERIZON COMMUNICATIONS INCVZ | 18 funds | $8.1B |
| GILEAD SCIENCES INCGILD | 18 funds | $6.6B |
| MERCK & CO. INC.MRK | 18 funds | $6.6B |
| PHILIP MORRIS INTERNATIONALPM | 18 funds | $5.5B |
Ranked by how many of GDL'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 GDL. 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.