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MRK: insider buying, 13F holders, analyst moves
Merck & Co Inc
A summary of public filings about Merck & Co Inc. For the latest insider history, price chart, analyst changes and activist filings, open the live lookup.
SEC Form 13F · Q2 2026
6 of our 100 managers hold MRK
Combined reported value $154.5M.
Holders among our 100 managers: 6 in Q3 2023, 6 in Q2 2026.
| Manager | Value | % of portfolio | Change vs Q1 2026 |
|---|---|---|---|
| Samlyn Capital | $72.7M | 1.21% | Trimmed |
| Kahn Brothers Group | $28.0M | 4.43% | Trimmed |
| Farallon Capital | $25.6M | 0.15% | Trimmed |
| Fairfax Financial | $22.2M | 0.84% | Unchanged |
| Semper Augustus Investments Group | $5.7M | 0.65% | Unchanged |
| Gardner Russo & Quinn | $211K | 0.00% | Trimmed |
Important information
Facts from public SEC filings, shown for information only. Not a recommendation. Not individualized investment advice. Gulfstream Capital and its clients may hold positions in securities shown.
