MRK · CUSIP 58933Y105
MERCK & CO INC
Reported by 10 of 79 curated managers in Q2 2026, in the holdings snapshot last exported 2026-08-24.
- Managers holding
- 10
- Average portfolio weight
- 0.9%
- Combined reported value
- $1.8B
- Research group
- 79
10 of the 79 superinvestors Shameless Cloning tracks reported MERCK & CO INC (MRK) in their Q2 2026 13F filings, worth $1.8B combined, at an average 0.9% of their portfolios. The largest positions by portfolio weight belong to Kahn Brothers Group (4.4%), Bill Nygren (2.1%), Sarah Ketterer (1.3%).
Reporting managers
This is a historical 13F snapshot, not a live shareholder register. The count covers all matched managers; dashboard rankings use only those with at least 95% coverage. Reported value is measured at filing quarter-end, not at today's price.
| Manager / SEC filer | % of portfolio | Reported value |
|---|---|---|
| Kahn Brothers GroupKAHN BROTHERS GROUP INC | 4.4% | $28.0M |
| Bill NygrenHARRIS ASSOCIATES L P | 2.1% | $1.6B |
| Sarah KettererCAUSEWAY CAPITAL MANAGEMENT LLC | 1.3% | $122.7M |
| Prem WatsaFAIRFAX FINANCIAL HOLDINGS LTD/ CAN | 0.8% | $22.2M |
| Christopher BloomstranSEMPER AUGUSTUS INVESTMENTS GROUP LLC | 0.6% | $5.7M |
| Mairs & Power FundsMAIRS & POWER INC | 0.1% | $6.6M |
| David KatzMATRIX ASSET ADVISORS INC/NY | 0.0% | $215K |
| Dodge & Cox FundsDodge & Cox | 0.0% | $17.4M |
| Thomas RussoGARDNER RUSSO & QUINN LLC | 0.0% | $211K |
| Richard PzenaPZENA INVESTMENT MANAGEMENT LLC | 0.0% | $323K |