Skip to content
RKWD
ROCKWOOD RESEARCH · A CORPORATE FILINGS WEBSITE|STRAIGHT FROM THE SOURCE · SEC EDGAR|SPONSOREDYour message on this tape — bid on the Rockwood Ad Exchange · Rockwood Ad Exchange|
Rockwood Research
…

MRK

Merck & Co., Inc.

Pharmaceutical Preparations · SIC 2834CIK 310158Held by 22 tracked managersEDGAR filings ↗10-K/10-Q ↗

SHARE:XLINKEDINEMAIL
i
22 managers · Q2 2026 13F
Kahn Brothers Group
Kahn BrothersPosition history →
4.4%
(4.0%)
Oakmark Funds (Harris Associates)
Bill NygrenPosition history →
2.1%
(2.4%)
Platinum Investment Management
Platinum Investment ManagementPosition history →
2.0%
—
OrbiMed Advisors
OrbiMed AdvisorsPosition history →
1.6%
—
Causeway Capital Management
Sarah KettererPosition history →
1.3%
+11.8%
Fairfax Financial Holdings
Prem WatsaPosition history →
0.84%
—
Semper Augustus
Christopher BloomstranPosition history →
0.65%
—
Adage Capital Management
Adage Capital ManagementPosition history →
0.37%
(24.5%)
Alps Advisors
Alps AdvisorsPosition history →
0.27%
+5.8%
Infrastructure Capital Advisors
Infrastructure Capital AdvisorsPosition history →
0.26%
+19.8%
Holocene Advisors
Holocene AdvisorsPosition history →
0.18%
+9.7%
Ashford Capital Management
Ashford Capital ManagementPosition history →
0.18%
—
Mairs & Power
Mairs & PowerPosition history →
0.06%
+2.3%
Capital Research Global Investors
Capital Research Global InvestorsPosition history →
0.03%
(6.6%)
Fairview Capital Investment Management
Fairview Capital Investment ManagementPosition history →
0.02%
—
Matrix Asset Advisors
David KatzPosition history →
0.02%
—
Bridgewater Associates
Bridgewater AssociatesPosition history →
0.02%
NEW
Chickasaw Capital Management
Chickasaw Capital ManagementPosition history →
0.01%
—
Dodge & Cox
Dodge & CoxPosition history →
0.01%
(0.2%)
Zevenbergen Capital Investments
Zevenbergen Capital InvestmentsPosition history →
<0.01%
NEW
Gardner Russo & Quinn
Thomas RussoPosition history →
<0.01%
(23.3%)
Pzena Investment Management
Richard PzenaPosition history →
<0.01%
—

Weight = position value ÷ the manager's total 13F long-equity value in the same filing — one definition for every row. “1st obs.” marks a position with no earlier stored 13F to compare against — it is not shown as a purchase.