Merck & Co.MRK
13F holders, Q1 2025 (March 31)3,448holders −154
136new positions
275sold out
15famous investors
$89.76avg. 13F price*
At the end of Q1 2025, 3,448 institutions reported holding Merck & Co. Inc. (MRK) in their 13F filings, down 154 from Q4 2024. 136 opened new positions and 275 sold out. The largest holders were Vanguard Group Inc. ($22.7B), BlackRock, Inc. ($20.2B) and State Street Corp. ($10.9B). 15 famous investors held it, including Jeremy Grantham (1.9% of GMO's portfolio), Bill Nygren (1.1% of Harris Associates (Oakmark Funds)'s portfolio) and David E. Shaw (1.1% of D. E. Shaw & Co.'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 Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 136 | $525.6M |
| Exits | 275 | $2.3B |
All 13F filers, Q4 2024 → Q1 2025: 135,853,415 shares bought and 129,109,593 shares sold, net +6,743,822 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 3,448 holders
| Vanguard Group Inc. | 0.41% | Add +0.6% | 252,513,381 | $22.7B |
| BlackRock, Inc. | 0.43% | Add +1.5% | 225,398,231 | $20.2B |
| State Street Corp. | 0.45% | Reduce -0.3% | 120,529,640 | $10.9B |
| Wellington Management Group LLP | 1.41% | Add +1.1% | 81,669,651 | $7.3B |
| Geode Capital Management, LLC | 0.42% | Reduce -2.5% | 59,657,270 | $5.3B |
| Charles Schwab Investment Management Inc. | 0.83% | Add +144.6% | 49,229,283 | $4.4B |
| Morgan Stanley | 0.28% | Reduce -2.4% | 43,114,452 | $3.9B |
| Norges Bank | 0.48% | Add +9.3% | 38,227,690 | $3.4B |
| FMR LLC | 0.18% | Reduce -14.9% | 31,808,043 | $2.9B |
| Bank of America Corp. | 0.25% | Reduce -14.7% | 31,084,245 | $2.8B |
| Northern Trust Corp. | 0.41% | Reduce -3.1% | 30,390,864 | $2.7B |
| JPMorgan Chase & Co. | 0.20% | Add +5.2% | 28,508,222 | $2.6B |
| Fisher Asset Management | 0.95% | Add +51.7% | 24,445,797 | $2.2B |
| Bank of New York Mellon Corp | 0.41% | Reduce -4.5% | 23,130,857 | $2.1B |
| Franklin Resources Inc. | 0.58% | Add +10.2% | 21,896,853 | $2.0B |
| UBS Group AG | 0.42% | Add +21.9% | 21,061,269 | $1.9B |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.48% | Reduce -3.8% | 20,737,477 | $1.9B |
| Legal & General Group Plc | 0.48% | Add +1.4% | 19,755,308 | $1.8B |
| Deutsche Bank AG | 0.68% | Reduce -0.4% | 19,172,446 | $1.7B |
| Raymond James Financial Inc. | 0.53% | Reduce -0.3% | 15,640,892 | $1.4B |
| Invesco Ltd. | 0.26% | Reduce -1.0% | 15,298,134 | $1.4B |
| Goldman Sachs Group Inc. | 0.24% | Reduce -16.0% | 14,367,432 | $1.3B |
| Arrowstreet Capital, Limited Partnership | 1.05% | Add +121.9% | 14,362,008 | $1.3B |
| Royal Bank of Canada | 0.28% | Reduce -22.8% | 14,178,149 | $1.3B |
| State Farm Mutual Automobile Insurance Co. | 1.14% | No change | 13,794,969 | $1.2B |
| Ameriprise Financial Inc. | 0.31% | Reduce -7.6% | 12,898,889 | $1.2B |
| Amundi | 0.41% | Add +37.1% | 13,077,716 | $1.1B |
| Wells Fargo & Company | 0.26% | Reduce -20.0% | 11,899,152 | $1.1B |
| T. Rowe Price Associates Inc. | 0.13% | Reduce -6.0% | 11,765,832 | $1.1B |
| Nuveen, LLC | 0.30% | — | 11,046,718 | $991.6M |
| Dimensional Fund Advisors LP | 0.24% | Reduce -5.7% | 10,914,227 | $979.6M |
| Alliancebernstein L.P. | 0.33% | Reduce -7.9% | 10,236,395 | $918.8M |
| Nordea Investment Management AB | 0.89% | Add +0.2% | 9,416,070 | $839.3M |
| D. E. Shaw & Co. | 1.07% | Add +46.1% | 9,311,726 | $835.8M |
| Aristotle Capital Management, LLC | 1.51% | Reduce -2.6% | 8,463,749 | $759.7M |
| California Public Employees Retirement System | 0.52% | Reduce -2.2% | 8,292,792 | $744.4M |
| BNP Paribas Financial Markets | 0.57% | Add +43.2% | 8,205,488 | $736.5M |
| HSBC Holdings PLC | 0.48% | Reduce -5.3% | 8,006,266 | $717.4M |
| Swedbank AB | 0.95% | Add +4.3% | 7,987,977 | $717.0M |
| Massachusetts Financial Services Co. | 0.24% | Reduce -2.6% | 7,983,193 | $716.6M |
| PNC Financial Services Group, Inc. | 0.37% | Reduce -3.2% | 7,844,171 | $704.1M |
| Barrow Hanley Mewhinney & Strauss LLC | 2.54% | Add +23.9% | 7,791,098 | $699.3M |
| AQR Capital Management | 0.71% | Add +44.3% | 7,757,818 | $691.1M |
| Harris Associates (Oakmark Funds) | 1.13% | Add +19.6% | 7,469,360 | $670.4M |
| Stifel Financial Corp. | 0.71% | Add +1.1% | 7,445,038 | $668.3M |
| Sumitomo Mitsui Trust Group, Inc. | 0.46% | Add +1.0% | 7,285,677 | $654.0M |
| Swiss National Bank | 0.45% | Reduce -0.4% | 7,134,851 | $640.4M |
| GMO | 1.89% | Add +8.5% | 6,686,596 | $600.2M |
| Citigroup Inc. | 0.43% | Add +31.5% | 6,232,594 | $559.4M |
| Clearbridge Investments, LLC | 0.47% | Add +2.0% | 5,929,684 | $532.2M |
| Barclays PLC | 0.24% | Reduce -9.4% | 5,856,852 | $525.7M |
| Principal Financial Group Inc. | 0.28% | Reduce -13.4% | 5,629,432 | $505.3M |
| LSV Asset Management | 1.18% | Reduce -4.9% | 5,465,430 | $490.6M |
| Bank of Montreal | 0.26% | Reduce -12.6% | 5,392,583 | $484.0M |
| DekaBank Deutsche Girozentrale | 0.94% | Reduce -0.7% | 5,390,606 | $481.0M |
| Pacer Advisors, Inc. | 1.23% | Add +2240.9% | 5,286,801 | $474.5M |
| National Pension Service | 0.46% | Add +6.3% | 5,273,483 | $473.3M |
| Envestnet Asset Management Inc. | 0.15% | Reduce -21.9% | 5,044,840 | $452.8M |
| Lazard Asset Management LLC | 0.76% | Add +47.2% | 5,018,629 | $450.5M |
| Capital International Investors | 0.09% | Reduce -23.4% | 4,813,805 | $432.0M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.39% | Add +11.4% | 4,680,105 | $420.0M |
| Rhumbline Advisers | 0.38% | Add +0.7% | 4,492,983 | $403.3M |
| Aberdeen Group plc | 0.79% | Add +6.2% | 4,513,993 | $403.1M |
| Victory Capital Management Inc. | 0.42% | Add +33.5% | 4,467,000 | $401.0M |
| Beutel, Goodman & Co Ltd. | 2.29% | Add +9.5% | 4,425,097 | $397.2M |
| Caisse de depot et placement du Quebec | 0.81% | Add +3.6% | 4,315,410 | $387.4M |
| California State Teachers Retirement System | 0.45% | Reduce -0.8% | 4,044,610 | $363.0M |
| Macquarie Group Ltd. | 0.45% | Add +3.5% | 4,019,626 | $360.8M |
| Squarepoint Ops LLC | 0.85% | Add +110.8% | 3,875,934 | $347.9M |
| Canada Pension Plan Investment Board | 0.33% | Reduce -34.3% | 3,822,309 | $343.1M |
| Manufacturers Life Insurance Company, The | 0.33% | Reduce -24.9% | 3,812,525 | $342.2M |
| Bahl & Gaynor LLC | 1.71% | Reduce -13.4% | 3,740,595 | $335.8M |
| Russell Investments Group, Ltd. | 0.46% | Add +21.1% | 3,730,069 | $334.3M |
| HighTower Advisors, LLC | 0.45% | Add +17.4% | 3,698,960 | $332.0M |
| New York State Common Retirement Fund | 0.47% | Add +1.1% | 3,558,596 | $319.4M |
| Millennium Management | 0.32% | Reduce -1.6% | 3,524,602 | $316.4M |
| Royal London Asset Management Ltd. | 0.73% | Add +173.7% | 3,451,556 | $309.8M |
| Qube Research & Technologies Ltd | 0.48% | Reduce -21.4% | 3,433,412 | $308.2M |
| Prudential Financial Inc. | 0.43% | Add +26.7% | 3,351,418 | $300.8M |
| Smead Capital Management, Inc. | 5.13% | Add +1.0% | 3,334,566 | $299.3M |
| Two Sigma Advisers, LP | 0.66% | Reduce -32.7% | 3,288,600 | $295.2M |
| National Bank of Canada | 0.34% | Reduce -29.3% | 3,249,992 | $291.7M |
| LPL Financial LLC | 0.11% | Add +1.1% | 3,237,518 | $290.6M |
| Capital Research Global Investors | 0.06% | Reduce -29.6% | 3,150,734 | $282.8M |
| CANADA LIFE ASSURANCE Co | 0.49% | Add +0.6% | 3,121,289 | $280.4M |
| Van Eck Associates Corp. | 0.36% | Reduce -1.8% | 3,091,846 | $277.5M |
| Thornburg Investment Management Inc. | 3.88% | Add +64.5% | 3,086,806 | $277.1M |
| American Century Companies Inc. | 0.17% | Add +65.7% | 3,050,615 | $273.8M |
| Fayez Sarofim & Co | 0.65% | Reduce -9.0% | 2,917,391 | $261.9M |
| Bank Julius Baer & Co. Ltd, Zurich | 0.83% | Add +158.0% | 2,865,204 | $256.8M |
| First Trust Advisors LP | 0.23% | Add +212.8% | 2,838,173 | $254.8M |
| Janus Henderson Group PLC | 0.14% | Reduce -52.9% | 2,765,366 | $246.8M |
| Mariner, LLC | 0.41% | Add +52.5% | 2,738,173 | $245.8M |
| Bank of Nova Scotia | 0.55% | Add +37.5% | 2,693,721 | $241.8M |
| Los Angeles Capital Management LLC | 1.06% | Add +95.3% | 2,674,845 | $240.1M |
| Corient Private Wealth LP | 0.39% | Reduce -14.6% | 2,660,860 | $238.9M |
| Ensign Peak Advisors, Inc | 0.45% | Reduce -2.1% | 2,615,365 | $234.8M |
| Robeco Institutional Asset Management B.V. | 0.45% | Reduce -1.9% | 2,606,526 | $234.0M |
| Acadian Asset Management LLC | 0.66% | Add +357.8% | 2,594,693 | $232.9M |
| Aviva PLC | 0.55% | Add +15.7% | 2,546,627 | $228.6M |
"% of holder's portfolio" is MRK's weight in each manager's 13F, not the share of Merck & Co. Inc. the manager owns.