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 GBL 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/GBL"
Use Arkolith to show who owns GBL, which funds added or reduced it, and which SEC filings prove each claim.
Not held in any tracked 13F filing yet.
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 |
|---|---|---|---|---|---|
| Dec 8, 2022 | GGCP Holdings LLC | 10% Owner | Sell (S) | 218 | $3K |
| Nov 10, 2022 | GABELLI MARIO J | 10% Owner | Sell (S) | 3K | $59K |
| Oct 28, 2022 | GGCP, INC. | 10% Owner | Sell (S) | 800 | $14K |
| Oct 27, 2022 | Associated Capital Group, Inc. | Chairman & CEO, Director, 10% Owner | Sell (S) | 2K | $25K |
| Oct 26, 2022 | Associated Capital Group, Inc. | Chairman & CEO, Director, 10% Owner | Sell (S) | 3K | $46K |
| Oct 21, 2022 | GABELLI MARIO J | 10% Owner | Sell (S) | 2K | $23K |
| Sep 19, 2022 | Associated Capital Group, Inc. | 10% Owner | Buy (P) | 1K | $23K |
| Sep 12, 2022 | Caterina Kieran | Chief Accounting Officer | Tax withholding (F) | 2K | $41K |
| Dec 31, 2021 | Associated Capital Group, Inc. | Chairman & CEO, Director, 10% Owner | Sell (S) | 500 | $13K |
| Dec 30, 2021 | Associated Capital Group, Inc. | Chairman & CEO, Director, 10% Owner | Sell (S) | 1K | $26K |
| Dec 21, 2021 | Van der Eb Henry | Senior Vice President | Sell (S) | 946 | $23K |
| Dec 15, 2021 | ALPERT BRUCE N | Senior Vice President | Tax withholding (F) | 1K | $25K |
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for GBL. 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.