Held by 10 tracked superinvestors.
See MRK insider (officer/director) trading →Bill Nygren
Oakmark Funds · as of 2026-06-30
$1,551,394,499
12,073,109 shares
Sarah Ketterer
Causeway Capital Management · as of 2026-06-30
$122,708,787
954,932 shares
Kahn Brothers Group
Kahn Brothers Group · as of 2026-06-30
$27,340,511
227,288 shares
Prem Watsa
Fairfax Financial Holdings · as of 2026-06-30
$22,198,631
172,900 shares
Dodge & Cox Funds
Dodge & Cox Funds · as of 2026-06-30
$17,443,875
135,750 shares
Mairs & Power Funds
Mairs & Power Funds · as of 2026-06-30
$6,620,192
51,519 shares
Christopher Bloomstran
Semper Augustus · as of 2026-06-30
$5,735,341
44,633 shares
Richard Pzena
Pzena Investment Management · as of 2026-06-30
$322,664
2,511 shares
David Katz
Matrix Asset Advisors · as of 2026-06-30
$214,724
1,671 shares
Thomas Russo
Gardner Russo & Quinn · as of 2026-06-30
$211,006
1,642 shares
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