Merck & Co.MRK
13F holders, Q4 2025 (December 31)3,667holders +356
291new positions
123sold out
13famous investors
$105.39avg. 13F price*
At the end of Q4 2025, 3,667 institutions reported holding Merck & Co. Inc. (MRK) in their 13F filings, up 356 from Q3 2025. 291 opened new positions and 123 sold out. The largest holders were Vanguard Group Inc. ($26.8B), BlackRock, Inc. ($23.1B) and State Street Corp. ($12.7B). 13 famous investors held it, including Bill Nygren (1.9% of Harris Associates (Oakmark Funds)'s portfolio), Jeremy Grantham (1.8% of GMO's portfolio) and Ken Fisher (0.9% of Fisher Asset Management's portfolio).
- Company
- Merck & Co. Inc.
- Sector
- Health Care
- CUSIP
- 58933Y105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 291 | $1.4B |
| Exits | 123 | $994.7M |
All 13F filers, Q3 2025 → Q4 2025: 118,372,754 shares bought and 107,522,453 shares sold, net +10,850,301 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 3,667 holders
| Vanguard Group Inc. | 0.39% | Add +0.9% | 254,322,763 | $26.8B |
| BlackRock, Inc. | 0.39% | Add +2.0% | 219,095,465 | $23.1B |
| State Street Corp. | 0.43% | Add +1.6% | 120,040,168 | $12.7B |
| Wellington Management Group LLP | 1.60% | Add +14.8% | 86,435,458 | $9.1B |
| Geode Capital Management, LLC | 0.39% | Add +0.4% | 60,047,984 | $6.3B |
| Charles Schwab Investment Management Inc. | 0.79% | Reduce -9.6% | 48,563,804 | $5.1B |
| Morgan Stanley | 0.28% | Add +0.8% | 44,946,021 | $4.7B |
| FMR LLC | 0.22% | Add +22.2% | 40,836,566 | $4.3B |
| Norges Bank | 0.43% | — | 37,981,502 | $4.0B |
| JPMorgan Chase & Co. | 0.21% | Reduce -17.1% | 29,199,978 | $3.1B |
| Bank of America Corp. | 0.21% | Add +5.3% | 27,854,441 | $2.9B |
| Northern Trust Corp. | 0.37% | Reduce -2.5% | 27,234,642 | $2.9B |
| Fisher Asset Management | 0.89% | Add +3.4% | 24,873,327 | $2.6B |
| Invesco Ltd. | 0.20% | Add +3.5% | 20,546,185 | $2.2B |
| Legal & General Group Plc | 0.46% | Reduce -4.3% | 19,776,842 | $2.1B |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.43% | Reduce -1.6% | 19,433,403 | $2.0B |
| Goldman Sachs Group Inc. | 0.29% | Add +28.8% | 19,348,718 | $2.0B |
| UBS Group AG | 0.40% | Add +13.4% | 19,178,272 | $2.0B |
| Bank of New York Mellon Corp | 0.36% | Reduce -12.1% | 19,164,526 | $2.0B |
| T. Rowe Price Associates Inc. | 0.21% | Add +37.9% | 18,753,390 | $2.0B |
| Franklin Resources Inc. | 0.42% | Reduce -4.1% | 16,064,050 | $1.7B |
| Ameriprise Financial Inc. | 0.38% | Add +0.3% | 15,974,409 | $1.7B |
| Harris Associates (Oakmark Funds) | 1.88% | Add +43.4% | 14,088,705 | $1.5B |
| State Farm Mutual Automobile Insurance Co. | 1.14% | No change | 13,794,969 | $1.5B |
| Amundi | 0.43% | Reduce -12.0% | 13,385,093 | $1.4B |
| Royal Bank of Canada | 0.24% | Add +3.0% | 13,190,085 | $1.4B |
| Deutsche Bank AG | 0.44% | Reduce -24.1% | 12,788,311 | $1.3B |
| Dimensional Fund Advisors LP | 0.28% | Add +14.8% | 12,486,183 | $1.3B |
| AQR Capital Management | 0.62% | Add +5.5% | 11,249,363 | $1.2B |
| Wells Fargo & Company | 0.23% | Add +5.7% | 11,048,211 | $1.2B |
| Nordea Investment Management AB | 0.96% | Reduce -3.4% | 10,573,821 | $1.1B |
| Arrowstreet Capital, Limited Partnership | 0.61% | Reduce -46.9% | 9,944,123 | $1.0B |
| Alliancebernstein L.P. | 0.29% | Add +4.9% | 8,632,385 | $908.6M |
| California Public Employees Retirement System | 0.52% | Add +13.2% | 8,568,406 | $901.9M |
| Stifel Financial Corp. | 0.81% | Reduce -2.0% | 8,547,069 | $899.7M |
| HSBC Holdings PLC | 0.48% | Reduce -3.7% | 8,075,449 | $850.5M |
| Barrow Hanley Mewhinney & Strauss LLC | 2.73% | Add +5.1% | 7,793,176 | $820.3M |
| Swedbank AB | 0.78% | Reduce -8.3% | 7,651,671 | $805.4M |
| PNC Financial Services Group, Inc. | 0.44% | Reduce -3.1% | 7,621,832 | $802.3M |
| DekaBank Deutsche Girozentrale | 1.34% | No change | 5,427,912 | $774.0M |
| Aristotle Capital Management, LLC | 1.53% | Reduce -6.9% | 7,280,893 | $766.4M |
| Sumitomo Mitsui Trust Group, Inc. | 0.43% | Reduce -5.3% | 6,971,801 | $733.9M |
| Nuveen, LLC | 0.19% | Add +0.7% | 6,958,069 | $732.4M |
| Raymond James Financial Inc. | 0.23% | Reduce -1.1% | 6,928,656 | $729.4M |
| GMO | 1.85% | Add +3.7% | 6,870,145 | $723.2M |
| Swiss National Bank | 0.43% | Reduce -5.5% | 6,843,451 | $720.3M |
| Citadel Advisors | 0.50% | Add +604.6% | 6,821,331 | $718.0M |
| Millennium Management | 0.53% | Add +790.8% | 6,800,351 | $715.8M |
| National Pension Service | 0.45% | Add +1.4% | 5,789,424 | $609.4M |
| Jennison Associates LLC | 0.35% | New | 5,559,488 | $585.2M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.39% | Add +4.6% | 5,411,429 | $576.1M |
| Bank of Montreal | 0.23% | Reduce -0.5% | 5,372,201 | $565.5M |
| American Century Companies Inc. | 0.28% | Add +17.7% | 5,368,610 | $565.1M |
| LSV Asset Management | 1.19% | Reduce -2.4% | 5,174,433 | $544.7M |
| Principal Financial Group Inc. | 0.27% | Reduce -2.4% | 5,082,718 | $535.0M |
| Capital Wealth Planning, LLC | 3.43% | Add +56.8% | 5,004,197 | $529.2M |
| Victory Capital Management Inc. | 0.29% | Add +1.6% | 4,808,527 | $506.1M |
| Barclays PLC | 0.20% | Reduce -36.5% | 4,773,686 | $502.5M |
| Aberdeen Group plc | 0.76% | Add +3.8% | 4,651,002 | $489.6M |
| First Trust Advisors LP | 0.35% | Reduce -7.7% | 4,628,360 | $487.2M |
| Massachusetts Financial Services Co. | 0.15% | Reduce -41.5% | 4,416,021 | $464.8M |
| Lazard Asset Management LLC | 0.79% | Reduce -37.6% | 4,407,041 | $463.9M |
| Pacer Advisors, Inc. | 1.22% | Reduce -16.9% | 4,351,397 | $458.0M |
| Canada Pension Plan Investment Board | 0.30% | Add +12.1% | 4,314,599 | $454.2M |
| Caisse de depot et placement du Quebec | 0.74% | Reduce -13.3% | 4,131,458 | $434.9M |
| Beutel, Goodman & Co Ltd. | 2.63% | Reduce -16.3% | 4,062,393 | $427.6M |
| Rhumbline Advisers | 0.34% | Reduce -3.0% | 3,976,269 | $418.5M |
| Marshall Wace, LLP | 0.41% | Add +349.1% | 3,969,469 | $417.8M |
| Allianz Asset Management GmbH | 0.48% | Add +22.7% | 3,966,826 | $417.5M |
| California State Teachers Retirement System | 0.42% | Reduce -2.8% | 3,946,125 | $415.4M |
| Van Eck Associates Corp. | 0.34% | Reduce -27.4% | 3,864,329 | $406.8M |
| HighTower Advisors, LLC | 0.44% | Reduce -1.3% | 3,818,135 | $401.9M |
| Thornburg Investment Management Inc. | 4.96% | Add +5.9% | 3,728,673 | $392.5M |
| New York State Common Retirement Fund | 0.50% | Reduce -3.0% | 3,556,058 | $374.3M |
| LPL Financial LLC | 0.10% | Add +5.5% | 3,555,998 | $374.3M |
| D. E. Shaw & Co. | 0.30% | Add +1.5% | 3,518,464 | $370.4M |
| Russell Investments Group, Ltd. | 0.37% | Reduce -6.3% | 3,211,875 | $338.7M |
| Envestnet Asset Management Inc. | 0.10% | Reduce -5.6% | 3,204,340 | $337.3M |
| Royal London Asset Management Ltd. | 0.71% | Reduce -0.1% | 3,197,151 | $336.5M |
| Bank Julius Baer & Co. Ltd, Zurich | 0.92% | Add +3.3% | 3,163,331 | $333.6M |
| Los Angeles Capital Management LLC | 1.13% | Add +12.7% | 3,846,868 | $331.9M |
| Neuberger Berman Group LLC | 0.24% | Add +16.4% | 3,039,898 | $320.0M |
| Voya Investment Management LLC | 0.36% | Add +335.5% | 2,986,471 | $314.4M |
| CANADA LIFE ASSURANCE Co | 0.54% | Reduce -19.6% | 2,970,373 | $312.8M |
| Aviva PLC | 0.51% | Add +4.2% | 2,887,354 | $303.9M |
| Smead Capital Management, Inc. | 6.20% | Reduce -6.5% | 2,838,300 | $298.8M |
| Mariner, LLC | 0.35% | Add +8.9% | 2,753,230 | $289.8M |
| Adage Capital Partners Gp, L.L.C. | 0.43% | Add +155.1% | 2,687,850 | $282.9M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.32% | Add +171.4% | 2,654,500 | $279.5M |
| Citigroup Inc. | 0.19% | Reduce -41.7% | 2,636,111 | $277.5M |
| Natixis Advisors, LLC | 0.38% | Add +9.4% | 2,527,577 | $266.1M |
| Eurizon Capital SGR S.p.A. | 0.82% | — | 2,511,073 | $264.6M |
| Robeco Institutional Asset Management B.V. | 0.37% | Reduce -16.9% | 2,497,975 | $262.9M |
| Federated Hermes, Inc. | 0.44% | Add +590.9% | 2,492,038 | $262.3M |
| Brandes Investment Partners, LP | 1.98% | Add +1.9% | 2,467,525 | $259.7M |
| Corient Private Wealth LP | 0.35% | Add +0.3% | 2,433,240 | $256.2M |
| Employees Provident Fund Board | 1.87% | Add +2.6% | 2,415,034 | $254.2M |
| BNP Paribas Financial Markets | 0.16% | Reduce -57.9% | 2,413,707 | $254.1M |
| Thrivent Financial for Lutherans | 0.46% | Add +1.2% | 2,407,392 | $253.4M |
| Cullen Capital Management, LLC | 2.63% | Reduce -2.2% | 2,291,041 | $241.2M |
"% of holder's portfolio" is MRK's weight in each manager's 13F, not the share of Merck & Co. Inc. the manager owns.