Stock research
MRK — MERCK & CO INC
MRK is reported by 16 tracked managers with $1.9B in visible reported value. This page connects ownership breadth, filing activity, and price context.
Stock research evidence
The latest visible filing snapshot is 2026 Q2. Values come from reported manager holdings; prices and 52-week context come from the latest available market quote.
- Tracked holders
- 16
- Reported value
- $1.9B
- Ownership breadth
- Not available
- Current price
- $145
Top reported managers
These managers have the largest visible reported positions in MRK. Portfolio weight is measured within each manager's latest visible filing.
- Cliff Asness0.4% of reported portfolio · $1.0B · Filed Aug 14, 2026
- David Shaw0.2% of reported portfolio · $351.8M · Reduce · Filed Aug 14, 2026
- Ken Griffin0.1% of reported portfolio · $248.5M · Reduce · Filed Aug 14, 2026
- Sarah Ketterer1.3% of reported portfolio · $122.7M · Add · Filed Aug 13, 2026
- Israel Englander0.1% of reported portfolio · $72.1M · Filed Aug 14, 2026
Continue the research
Review the manager roster, compare this company with the most widely held stocks, or browse transparent screens built from the same filing-backed data.