MRK fund manager activity
Merck & Company, Inc · NYSE. Reported by 28 tracked fund managers in their 13F filings, Q2 2013 to Q3 2026.
Q1 2026
| Manager | Activity | Shares | Value | % of portfolio | Filed |
|---|---|---|---|---|---|
| Ron Baron - Baron Capital | New | 25,000 | $3,007,250 | 0.01% | May 15, 2026 |
| Sarah Ketterer - Causeway Capital Management | Trimmed | 854,212 | $102,753,243 | 1.26% | May 14, 2026 |
| Dodge & Cox Funds | Trimmed | 136,050 | $16,365,455 | 0.01% | May 14, 2026 |
| Prem Watsa - Fairfax Financial Holdings | No change | 172,900 | $20,799,870 | 1.07% | May 15, 2026 |
| Ken Fisher - Fisher Asset Management | Added | 26,436,284 | $3,180,020,742 | 1.08% | May 5, 2026 |
| Jeremy Grantham - GMO | Added | 7,013,777 | $843,687,399 | 2.16% | May 14, 2026 |
| Thomas Russo - Gardner Russo & Quinn | New | 2,141 | $257,536 | 0.00% | May 13, 2026 |
| Joel Greenblatt - Gotham Asset Management | Added | 506,551 | $60,933,020 | 0.19% | May 15, 2026 |
| Kahn Brothers Group | Trimmed | 227,288 | $27,340,511 | 4.85% | May 8, 2026 |
| Mairs & Power Funds | Trimmed | 50,348 | $6,056,361 | 0.06% | May 14, 2026 |
| David Katz - Matrix Asset Advisors | Trimmed | 1,671 | $201,005 | 0.02% | Apr 22, 2026 |
| Bill Nygren - Oakmark Funds | Trimmed | 12,366,933 | $1,487,618,401 | 1.99% | May 15, 2026 |
| Richard Pzena - Pzena Investment Management | Trimmed | 2,511 | $302,048 | 0.00% | Apr 24, 2026 |
| Christopher Bloomstran - Semper Augustus | Added | 44,633 | $5,368,904 | 0.64% | May 15, 2026 |
Q4 2025
| Manager | Activity | Shares | Value | % of portfolio | Filed |
|---|---|---|---|---|---|
| Sarah Ketterer - Causeway Capital Management | Trimmed | 1,044,617 | $109,956,449 | 1.51% | Feb 13, 2026 |
| Dodge & Cox Funds | Trimmed | 138,205 | $14,547,458 | 0.01% | Feb 13, 2026 |
| Prem Watsa - Fairfax Financial Holdings | No change | 172,900 | $18,201,183 | 0.87% | Feb 17, 2026 |
| Ken Fisher - Fisher Asset Management | Added | 24,873,327 | $2,618,166,478 | 0.89% | Feb 9, 2026 |
| Jeremy Grantham - GMO | Added | 6,870,145 | $723,151,560 | 1.85% | Feb 17, 2026 |
| Joel Greenblatt - Gotham Asset Management | Trimmed | 447,427 | $47,096,166 | 0.17% | Feb 17, 2026 |
| Kahn Brothers Group | Trimmed | 430,103 | $45,272,674 | 8.02% | Feb 12, 2026 |
| Mairs & Power Funds | Trimmed | 51,999 | $5,473,415 | 0.05% | Feb 17, 2026 |
| David Katz - Matrix Asset Advisors | Trimmed | 2,862 | $301,254 | 0.03% | Jan 16, 2026 |
| Bill Nygren - Oakmark Funds | Added | 14,088,705 | $1,482,977,135 | 1.88% | Feb 17, 2026 |
| Richard Pzena - Pzena Investment Management | No change | 3,324 | $349,884 | 0.00% | Feb 6, 2026 |
| Christopher Bloomstran - Semper Augustus | No change | 44,443 | $4,678,070 | 0.54% | Feb 17, 2026 |