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 CALIX, INC 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/(CALX)"
Use Arkolith to show who owns CALIX, INC, 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 |
|---|---|---|---|---|---|
| Mar 30, 2026 | Russo Carl | Director, 10% Owner | Grant (A) | 12K | $0 |
| Feb 25, 2026 | Russo Carl | Director, 10% Owner | Option exercise (M) | 10K | $126K |
| Feb 25, 2026 | Russo Carl | Director, 10% Owner | Option exercise (M) | 10K | $0 |
| Feb 14, 2026 | SINDELAR CORY | Chief Financial Officer | Grant (A) | 439 | $20K |
| Feb 14, 2026 | Weening Michael | President & CEO, Director | Grant (A) | 439 | $20K |
| Feb 14, 2026 | Durocher John | COO | Grant (A) | 439 | $20K |
| Feb 12, 2026 | SINDELAR CORY | Chief Financial Officer | Grant (A) | 170K | $0 |
| Feb 12, 2026 | Weening Michael | President & CEO, Director | Grant (A) | 218K | $0 |
| Feb 12, 2026 | Eleniak Shane Todd Marshall | Chief Product Officer | Grant (A) | 195K | $0 |
| Feb 12, 2026 | Durocher John | COO | Grant (A) | 195K | $0 |
| Feb 3, 2026 | Russo Carl | Director, 10% Owner | Sell (S) | 13K | $632K |
| Feb 3, 2026 | Russo Carl | Director, 10% Owner | Sell (S) | 12K | $549K |
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for (CALX). 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.