Who owns Merck & Co. Inc. (MRK)?
720 US mutual funds and ETFs from 278 fund families reported a position in MRK for the quarter ending 2026-06-30. Against their own report a quarter earlier, 223 raised shares, 37 opened a new position, 334 cut and 52 sold out.
Largest fund families
| Fund family | Funds | Share of fund-held shares |
|---|---|---|
| Vanguard Index Funds | 4 | 41.1% |
| Ishares Trust | 15 | 13.4% |
| Select Sector Spdr Trust | 1 | 4.2% |
| Vanguard Institutional Index Funds | 2 | 3.6% |
| Jpmorgan Trust Ii | 3 | 3.1% |
| Vanguard Fenway Funds | 1 | 3.0% |
Tracked managers holding MRK
| Investor | Book weight |
|---|---|
| Bill Nygren · Oakmark | 2.1% |
Source: SEC Form N-PORT, which funds file about 60 days after quarter end, and the latest 13F filings. Share counts, not trades: a change can reflect fund inflows or outflows rather than a decision about MRK. A record of holdings, not a forecast and not investment advice. See all owner pages or the forecast board for the names our model ranks.
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