Merck & Co., Inc.
MRK- Exchange
- NYSE
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0000310158
In the last 90 days, Merck & Co., Inc. insiders filed 0 open-market purchases and 7 sales; 3,854 institutions reported holding it in 13F filings for Q2 2026, worth $254.3B in total; 4 superinvestors hold it, including Harris Associates (Oakmark) and Fairfax Financial.
13F holders, Q4 2025
Institutional positions in Merck & Co., Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 3,674
- +428 vs. Q3 2025
- Shares held
- 1.96B
- +60.6M (+3.2%) vs. Q3 2025
- Total value
- $206.6B
- +$47.2B (+29.6%) vs. Q3 2025
- New holders
- 555
- 1,380 more added
- Sold out
- 127
- 1,403 more reduced
73 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MRK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 3,854 | $254.3B |
| Q1 2026 | 3,812 | $231.9B |
| Q4 2025 | 3,674 | $206.6B |
| Q3 2025 | 3,319 | $159.8B |
| Q2 2025 | 3,337 | $155.9B |
| Q1 2025 | 3,459 | $177.7B |
| Q4 2024 | 3,618 | $196.9B |
| Q3 2024 | 3,502 | $221.8B |
| Q2 2024 | 3,558 | $242.3B |
| Q1 2024 | 3,547 | $256.9B |
| Q4 2023 | 3,444 | $211.6B |
| Q3 2023 | 3,222 | $197.7B |
| Q2 2023 | 3,262 | $222.8B |
| Q1 2023 | 3,188 | $205.1B |
| Q4 2022 | 3,244 | $212.2B |
| Q3 2022 | 2,997 | $162.7B |
| Q2 2022 | 3,020 | $171.5B |
| Q1 2022 | 2,962 | $152.1B |
| Q4 2021 | 2,910 | $142.2B |
| Q3 2021 | 2,658 | $138.8B |
| Q2 2021 | 2,684 | $144.3B |
| Q1 2021 | 2,693 | $143.2B |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 254,322,763 | $26.8B | 0.39% | +2,185,853+0.9% | Added |
| BlackRock, Inc. | 219,095,465 | $23.1B | 0.39% | +4,218,865+2.0% | Added |
| State Street Corp | 120,040,168 | $12.7B | 0.43% | +1,859,990+1.6% | Added |
| Wellington Management Group LLP | 86,435,458 | $9.10B | 1.59% | +11,156,354+14.8% | Added |
| Geode Capital Management, LLC | 60,047,984 | $6.31B | 0.39% | +249,110+0.4% | Added |
| Charles Schwab Investment Management Inc | 48,563,804 | $5.11B | 0.79% | −5,135,656−9.6% | Reduced |
| Morgan Stanley | 44,946,021 | $4.73B | 0.28% | +359,486+0.8% | Added |
| FMR LLC | 40,836,566 | $4.30B | 0.22% | +7,409,816+22.2% | Added |
| Norges Bank | 37,981,502 | $4.00B | 0.43% | +37,981,502 | New |
| JPMorgan Chase & Co | 29,199,978 | $3.07B | 0.21% | −6,001,669−17.0% | Reduced |
| Bank of America Corp | 27,854,441 | $2.93B | 0.21% | +1,405,005+5.3% | Added |
| Northern Trust Corp | 27,234,642 | $2.87B | 0.37% | −698,499−2.5% | Reduced |
| Fisher Asset Management, LLC | 24,873,327 | $2.62B | 0.89% | +805,201+3.3% | Added |
| Invesco Ltd. | 20,546,185 | $2.16B | 0.20% | +701,249+3.5% | Added |
| Legal & General Group Plc | 19,776,842 | $2.08B | 0.46% | −882,315−4.3% | Reduced |
| UBS Asset Management Americas Inc | 19,433,403 | $2.05B | 0.43% | −316,462−1.6% | Reduced |
| Goldman Sachs Group Inc | 19,348,718 | $2.04B | 0.29% | +4,327,351+28.8% | Added |
| UBS Group AG | 19,178,272 | $2.02B | 0.40% | +2,272,264+13.4% | Added |
| Bank of New York Mellon Corp | 19,164,526 | $2.02B | 0.36% | −2,629,828−12.1% | Reduced |
| Price T Rowe Associates Inc | 18,753,390 | $1.97B | 0.21% | +5,152,069+37.9% | Added |
| Franklin Resources Inc | 16,064,050 | $1.69B | 0.42% | −682,940−4.1% | Reduced |
| Ameriprise Financial Inc | 15,974,409 | $1.68B | 0.38% | +40,500+0.3% | Added |
| Harris Associates L PSuperinvestorHarris Associates (Oakmark) | 14,088,705 | $1.48B | 1.88% | +4,265,097+43.4% | Added |
| State Farm Mutual Automobile Insurance Co | 13,794,969 | $1.45B | 1.14% | 00.0% | Unchanged |
| Amundi | 13,385,093 | $1.41B | 0.38% | −1,829,094−12.0% | Reduced |
| Royal Bank of Canada | 13,190,085 | $1.39B | 0.24% | +381,742+3.0% | Added |
| Deutsche Bank AG | 12,788,311 | $1.35B | 0.44% | −4,058,050−24.1% | Reduced |
| Dimensional Fund Advisors LP | 12,486,183 | $1.31B | 0.28% | +1,608,609+14.8% | Added |
| AQR Capital Management LLC | 11,249,363 | $1.18B | 0.62% | +591,264+5.5% | Added |
| Wells Fargo & Company | 11,048,211 | $1.16B | 0.23% | +599,651+5.7% | Added |
| Nordea Investment Management AB | 10,573,821 | $1.12B | 0.96% | −371,366−3.4% | Reduced |
| Arrowstreet Capital, Limited Partnership | 9,944,123 | $1.05B | 0.61% | −8,764,580−46.8% | Reduced |
| Alliancebernstein L.P. | 8,632,385 | $908.6M | 0.29% | +402,592+4.9% | Added |
| California Public Employees Retirement System | 8,568,406 | $901.9M | 0.52% | +1,002,100+13.2% | Added |
| Stifel Financial Corp | 8,547,069 | $899.7M | 0.81% | −173,815−2.0% | Reduced |
| HSBC Holdings PLC | 8,075,449 | $850.5M | 0.48% | −312,409−3.7% | Reduced |
| Barrow Hanley Mewhinney & Strauss LLC | 7,793,176 | $820.3M | 2.73% | +377,906+5.1% | Added |
| Swedbank AB | 7,651,671 | $805.4M | 0.78% | −692,455−8.3% | Reduced |
| The PNC Financial Services Group, Inc. | 7,621,832 | $802.3M | 0.44% | −246,130−3.1% | Reduced |
| DekaBank Deutsche Girozentrale | 5,427,912 | $774.0M | 1.45% | 00.0% | Unchanged |
| Aristotle Capital Management, LLC | 7,280,893 | $766.4M | 1.53% | −537,045−6.9% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 6,971,801 | $733.9M | 0.43% | −394,387−5.4% | Reduced |
| Nuveen, LLC | 6,958,069 | $732.4M | 0.19% | +49,959+0.7% | Added |
| Raymond James Financial Inc | 6,928,656 | $729.4M | 0.23% | −78,797−1.1% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 6,870,145 | $723.2M | 1.85% | +244,795+3.7% | Added |
| Swiss National Bank | 6,843,451 | $720.3M | 0.43% | −394,800−5.5% | Reduced |
| Citadel Advisors LLC | 6,821,331 | $718.0M | 0.49% | +5,853,277+604.6% | Added |
| Millennium Management LLC | 6,800,351 | $715.8M | 0.51% | +6,036,983+790.8% | Added |
| National Pension Service | 5,789,424 | $609.4M | 0.45% | +82,039+1.4% | Added |
| Jennison Associates LLC | 5,559,488 | $585.2M | 0.35% | +5,559,488 | New |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 5,411,429 | $576.1M | 0.39% | +238,477+4.6% | Added |
| Bank of Montreal | 5,372,201 | $565.5M | 0.23% | −26,068−0.5% | Reduced |
| American Century Companies Inc | 5,368,610 | $565.1M | 0.28% | +808,970+17.7% | Added |
| LSV Asset Management | 5,174,433 | $544.7M | 1.19% | −124,840−2.4% | Reduced |
| Principal Financial Group Inc | 5,082,718 | $535.0M | 0.27% | −126,642−2.4% | Reduced |
| Capital Wealth Planning, LLC | 5,004,197 | $529.2M | 3.43% | +1,812,755+56.8% | Added |
| Victory Capital Management Inc | 4,808,527 | $506.1M | 0.29% | +75,204+1.6% | Added |
| Barclays PLC | 4,773,686 | $502.5M | 0.20% | −2,739,201−36.5% | Reduced |
| Standard Life Aberdeen plc | 4,651,002 | $489.6M | 0.76% | +171,379+3.8% | Added |
| First Trust Advisors LP | 4,628,360 | $487.2M | 0.35% | −383,251−7.6% | Reduced |
| Massachusetts Financial Services Co | 4,416,021 | $464.8M | 0.15% | −3,132,999−41.5% | Reduced |
| Lazard Asset Management LLC | 4,407,041 | $463.9M | 0.79% | −2,656,631−37.6% | Reduced |
| Pacer Advisors, Inc. | 4,351,397 | $458.0M | 1.19% | −885,756−16.9% | Reduced |
| Canada Pension Plan Investment Board | 4,314,599 | $454.2M | 0.30% | +466,043+12.1% | Added |
| Caisse de Depot Et Placement du Quebec | 4,131,458 | $434.9M | 0.74% | −635,612−13.3% | Reduced |
| Beutel, Goodman & Co Ltd. | 4,062,393 | $427.6M | 2.63% | −790,285−16.3% | Reduced |
| Rhumbline Advisers | 3,976,269 | $418.5M | 0.34% | −124,089−3.0% | Reduced |
| Marshall Wace, LLP | 3,969,469 | $417.8M | 0.40% | +3,085,569+349.1% | Added |
| Allianz Asset Management GmbH | 3,966,826 | $417.5M | 0.48% | +733,888+22.7% | Added |
| California State Teachers Retirement System | 3,946,125 | $415.4M | 0.42% | −113,912−2.8% | Reduced |
| Van Eck Associates Corp | 3,864,329 | $406.8M | 0.34% | −1,460,704−27.4% | Reduced |
| HighTower Advisors, LLC | 3,818,135 | $401.9M | 0.44% | −50,990−1.3% | Reduced |
| Thornburg Investment Management Inc | 3,728,673 | $392.5M | 4.95% | +208,042+5.9% | Added |
| New York State Common Retirement Fund | 3,556,058 | $374.3M | 0.50% | −111,941−3.1% | Reduced |
| LPL Financial LLC | 3,555,998 | $374.3M | 0.10% | +183,939+5.5% | Added |
| D. E. Shaw & Co., Inc. | 3,518,464 | $370.4M | 0.28% | +50,612+1.5% | Added |
| Russell Investments Group, Ltd. | 3,211,875 | $338.7M | 0.37% | −214,818−6.3% | Reduced |
| Envestnet Asset Management Inc | 3,204,340 | $337.3M | 0.10% | −191,701−5.6% | Reduced |
| Royal London Asset Management Ltd | 3,197,151 | $336.5M | 0.71% | −2,720−0.1% | Reduced |
| Bank Julius Baer & Co. Ltd, Zurich | 3,163,331 | $333.6M | 0.92% | +100,280+3.3% | Added |
| Los Angeles Capital Management LLC | 3,846,868 | $331.9M | 1.13% | +434,420+12.7% | Added |
| Neuberger Berman Group LLC | 3,039,898 | $320.0M | 0.24% | +427,885+16.4% | Added |
| Voya Investment Management LLC | 2,986,471 | $314.4M | 0.31% | +2,300,778+335.5% | Added |
| Great West Life Assurance Co | 2,970,373 | $312.8M | 0.54% | −722,894−19.6% | Reduced |
| Aviva PLC | 2,887,354 | $303.9M | 0.51% | +115,048+4.1% | Added |
| Smead Capital Management, Inc. | 2,838,300 | $298.8M | 6.20% | −196,374−6.5% | Reduced |
| Mariner, LLC | 2,753,230 | $289.8M | 0.35% | +225,264+8.9% | Added |
| Adage Capital Partners GP, L.L.C. | 2,687,850 | $282.9M | 0.43% | +1,634,216+155.1% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 2,654,500 | $279.5M | 0.32% | +1,676,271+171.4% | Added |
| Citigroup Inc | 2,636,111 | $277.5M | 0.19% | −1,886,279−41.7% | Reduced |
| Natixis Advisors, L.P. | 2,527,577 | $266.1M | 0.38% | +217,330+9.4% | Added |
| Eurizon Capital SGR S.p.A. | 2,511,073 | $264.6M | 0.82% | +2,511,073 | New |
| Robeco Institutional Asset Management B.V. | 2,497,975 | $262.9M | 0.37% | −508,157−16.9% | Reduced |
| Federated Hermes, Inc. | 2,492,038 | $262.3M | 0.44% | +2,131,343+590.9% | Added |
| Brandes Investment Partners, LP | 2,467,525 | $259.7M | 1.98% | +44,858+1.9% | Added |
| CI Private Wealth, LLC | 2,433,240 | $256.2M | 0.35% | +6,174+0.3% | Added |
| Employees Provident Fund Board | 2,415,034 | $254.2M | 1.87% | +61,000+2.6% | Added |
| BNP Paribas Arbitrage, SA | 2,413,707 | $254.1M | 0.16% | −3,316,714−57.9% | Reduced |
| Thrivent Financial for Lutherans | 2,407,392 | $253.4M | 0.45% | +27,726+1.2% | Added |
| Cullen Capital Management LLC | 2,291,041 | $241.2M | 2.63% | −52,411−2.2% | Reduced |