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 MMC 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/MMC"
Use Arkolith to show who owns MMC, 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 1, 2025 | Doyle John Q | President and CEO | Sell (S) | 21K | $3.8M |
| Dec 1, 2025 | Doyle John Q | President and CEO | Option exercise (M) | 21K | $1.3M |
| Dec 1, 2025 | Doyle John Q | President and CEO | Option exercise (M) | 21K | $0 |
| Nov 15, 2025 | MILLS STEVEN A | Director | Grant (A) | 231 | $42K |
| Nov 15, 2025 | Lute Jane H | Director | Grant (A) | 148 | $27K |
| Nov 15, 2025 | Yates Lloyd M | Director | Grant (A) | 198 | $36K |
| Nov 15, 2025 | SCHAPIRO MORTON O | Director | Grant (A) | 225 | $41K |
| Nov 14, 2025 | Siegmund Jan | Director | Other (J) | 5 | $840 |
| Nov 14, 2025 | Lute Jane H | Director | Other (J) | 34 | $6K |
| Nov 14, 2025 | Yates Lloyd M | Director | Other (J) | 50 | $9K |
| Nov 14, 2025 | Ingram Tamara | Director | Other (J) | 37 | $7K |
| Nov 14, 2025 | HOPKINS DEBORAH C | Director | Other (J) | 97 | $18K |
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for MMC. 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.