Merck & Company Inc (MRK)
Who owns Merck & Company Inc (MRK)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.8% of the shares are freely tradable; institutional investors hold 82.2%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 9.14 | 225,830,330 | +3.1 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.52 | 160,987,624 | +0.0 | 03/31/2026 |
| State Street Corp | 4.83 | 119,325,673 | -0.6 | 03/31/2026 |
| Wellington Management Company LLP | 3.41 | 84,314,971 | -2.5 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 2.73 | 67,304,305 | +0.0 | 03/31/2026 |
| Geode Capital Management, LLC | 2.41 | 59,558,154 | -0.8 | 03/31/2026 |
| JPMorgan Chase & Co | 2.14 | 52,972,983 | +81.4 | 03/31/2026 |
| Charles Schwab Investment Management Inc | 2.01 | 49,765,225 | +2.5 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Morn Total Stk Mkt Idx Investor | 3.18 | 78,424,914 | -0.3 | 06/30/2026 |
| Vanguard 500 Index Investor | 2.60 | 64,150,856 | -1.3 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.