MERCK & CO INC
77 of the Top-200 alpha managers hold $MRK as of the latest 13F snapshot.
Smart Money · top-200 alpha cohort
77 holders · Q1 202677 of the Top-200 alpha managers hold $MRK as of Q1 2026 — 29 new, 2 added, 5 trimmed, 41 held flat.
29 initiations · 2 adds · 5 trims · 41 held flat · Q1 2026
Smart Money shows holdings from our Top-Performer cohort — the 200 highest-alpha manager_13f funds in our universe. Position weight (current quarter) and QoQ delta versus prior quarter. α is the manager's annual alpha vs benchmark.
Institutional holders
Top 10 of 3,678 · Source: 13F-HRInsider activity · last 90 days
18 transactions · 10 filersTransaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.
Congress trades · last 90 days
32 disclosures · STOCK ActSource data: SEC EDGAR · 13F-HR · Form 4 · U.S. House Clerk PTR (disclosures-clerk.house.gov) · Senate eFD (senate.gov) · Last refreshed 04:29 UTC.