MERCK & CO. INC. (MRK) Institutional Ownership

MRK is currently held by 12 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $229.75M based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026.

The largest disclosed holder is Causeway Capital Management, which reported ownership valued at approximately $102.75M in its March 31, 2026 13F filing. Based on current market prices and the latest disclosed share count, Causeway Capital Management's MRK position is now estimated to be worth approximately $102.16M, representing an estimated loss of -0.57% since the filing period.

Major shareholders tracked on this page include Causeway Capital Management, Sequoia Financial Advisors, Kahn Brothers Group, and other prominent asset managers. Collectively, these investors account for approximately 88% of the total disclosed value among the investors covered in this analysis.

This page tracks fund ownership trends, hedge fund exposure, portfolio concentration, historical 13F filings, and estimated holding performance to help investors analyze smart money sentiment toward MERCK & CO. INC. (MRK).