Merck & Co., Inc.
MRKLast close · Oct 16, 2026145.97+0.78 (+0.53%)
Market cap$360.1B
Of the 85 managers this site tracks, 11 held Merck (MRK) at the end of Q3 2026, their latest 13Fs. The largest position by value was Bill Nygren's, $1.6B; Sarah Ketterer's ($122.7M) and Kahn Brothers's ($28.0M) follow. No Schedule 13D or 13G is on file for MRK from the activists and large holders the site follows.
Superinvestors holding MRK
| Manager | Firm | Quarter | Shares | Value |
|---|---|---|---|---|
| Bill Nygren | Harris Associates L P | Q2 2026 | 12M | $1.6B |
| Sarah Ketterer | Causeway Capital Management LLC | Q2 2026 | 954,932 | $122.7M |
| Kahn Brothers | Kahn Brothers Group Inc | Q2 2026 | 218,182 | $28.0M |
| Prem Watsa | Fairfax Financial Holdings Ltd | Q2 2026 | 172,900 | $22.2M |
| Dodge & Cox | Dodge & Cox | Q2 2026 | 135,750 | $17.4M |
| Mairs & Power | Mairs & Power Inc | Q2 2026 | 51,519 | $6.6M |
| Christopher Bloomstran | Semper Augustus Investments Group LLC | Q2 2026 | 44,633 | $5.7M |
| Bridgewater | Bridgewater Associates, LP | Q2 2026 | 30,254 | $3.9M |
| Richard Pzena | Pzena Investment Management LLC | Q2 2026 | 2,511 | $322,664 |
| David Katz | Matrix Asset Advisors Inc | Q3 2026 | 1,621 | $235,548 |
| Thomas Russo | Gardner Russo & Quinn LLC | Q2 2026 | 1,642 | $211,006 |
13D/13G are SEC beneficial-ownership disclosures, triggered only above 5%; a 13F is a quarterly snapshot filed up to 45 days after quarter end. Superinvestor names link to their full portfolios under Investors.