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; 3,855 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
- 1,379 more added
- Sold out
- 127
- 1,404 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 | 3,855 | $254.3B |
| Q1 2026 | 3,813 | $231.9B |
| Q4 2025 | 3,675 | $206.6B |
| Q3 2025 | 3,320 | $159.8B |
| Q2 2025 | 3,338 | $155.9B |
| Q1 2025 | 3,460 | $177.7B |
| Q4 2024 | 3,619 | $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 |
|---|---|---|---|---|---|
| Universal- Beteiligungs- und Servicegesellschaft mbH | 2,251,284 | $239.0M | 0.39% | −154,299−6.4% | Reduced |
| State Board of Administration of Florida Retirement System | 2,231,755 | $234.9M | 0.42% | −59,545−2.6% | Reduced |
| TD Asset Management Inc | 2,230,821 | $234.8M | 0.19% | +152,026+7.3% | Added |
| Balyasny Asset Management LLC | 2,187,260 | $230.2M | 0.43% | +1,502,303+219.3% | Added |
| Prudential Financial Inc | 2,116,141 | $222.7M | 0.27% | −1,463,904−40.9% | Reduced |
| Capital Research Global Investors | 2,112,142 | $222.3M | 0.04% | −198,473−8.6% | Reduced |
| New York State Teachers Retirement System | 2,072,922 | $218.2M | 0.42% | −69,134−3.2% | Reduced |
| Bessemer Group Inc | 2,054,137 | $216.2M | 0.33% | +526,293+34.4% | Added |
| Truist Financial Corp | 2,048,821 | $215.7M | 0.29% | +395,679+23.9% | Added |
| National Bank of Canada | 2,007,255 | $211.3M | 0.22% | +297,533+17.4% | Added |
| Korea Investment CORP | 2,006,037 | $211.2M | 0.42% | +228,890+12.9% | Added |
| Nomura Asset Management International Inc. | 1,963,787 | $206.7M | 0.31% | +1,963,787 | New |
| Bank of Nova Scotia | 1,956,200 | $205.9M | 0.31% | +579,015+42.0% | Added |
| Janus Henderson Group PLC | 1,885,140 | $198.5M | 0.09% | −230,401−10.9% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 1,881,532 | $198.1M | 0.55% | −178,997−8.7% | Reduced |
| Danske Bank A/S | 1,865,444 | $196.4M | 0.46% | −40,586−2.1% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 1,797,434 | $196.0M | 0.27% | +36,686+2.1% | Added |
| Manufacturers Life Insurance Company, The | 1,850,660 | $195.0M | 0.16% | +127,184+7.4% | Added |
| SEI Investments Co | 1,846,191 | $194.3M | 0.19% | +92,654+5.3% | Added |
| Man Group plc | 1,843,528 | $194.0M | 0.37% | −727,383−28.3% | Reduced |
| Handelsbanken Fonder AB | 1,843,042 | $194.0M | 0.59% | +224,752+13.9% | Added |
| Ensign Peak Advisors, Inc | 1,838,243 | $193.5M | 0.34% | −933,782−33.7% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 1,828,045 | $192.4M | 0.77% | +97,573+5.6% | Added |
| Janney Montgomery Scott LLC | 1,812,552 | $190.8M | 0.44% | −38,495−2.1% | Reduced |
| Macquarie Group Ltd | 1,768,032 | $186.1M | 0.81% | −1,636,827−48.1% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 1,743,732 | $183.5M | 0.16% | +259,936+17.5% | Added |
| Fayez Sarofim & Co | 1,739,889 | $183.1M | 0.44% | −666,433−27.7% | Reduced |
| Rockefeller Capital Management L.P. | 1,722,146 | $181.3M | 0.33% | +429,419+33.2% | Added |
| Cerity Partners LLC | 1,719,450 | $181.0M | 0.26% | +9,824+0.6% | Added |
| Storebrand Asset Management AS | 1,694,866 | $178.4M | 0.48% | −75,430−4.3% | Reduced |
| Schroder Investment Management Group | 1,686,481 | $177.5M | 0.13% | +112,430+7.1% | Added |
| Great Lakes Advisors, LLC | 1,677,111 | $176.5M | 1.44% | +39,268+2.4% | Added |
| Captrust Financial Advisors | 1,665,219 | $175.3M | 0.33% | +426,769+34.5% | Added |
| Alecta Pensionsforsakring, Omsesidigt | 1,640,300 | $172.7M | 0.76% | 00.0% | Unchanged |
| Mitsubishi UFJ Trust & Banking Corp | 1,625,314 | $171.1M | 0.41% | −825,324−33.7% | Reduced |
| Mondrian Investment Partners LTD | 1,610,232 | $169.5M | 2.80% | −38,085−2.3% | Reduced |
| Acadian Asset Management LLC | 1,594,669 | $167.8M | 0.28% | −608,296−27.6% | Reduced |
| US Bancorp | 1,580,821 | $166.4M | 0.19% | −52,426−3.2% | Reduced |
| Alyeska Investment Group, L.P. | 1,576,712 | $166.0M | 0.47% | +1,576,712 | New |
| Antipodes Partners Ltd | 1,575,811 | $165.9M | 3.48% | −95,741−5.7% | Reduced |
| PFA Pension, Forsikringsaktieselskab | 1,520,446 | $161.3M | 0.46% | +1,520,446 | New |
| M&T Bank Corp | 1,476,206 | $155.4M | 0.50% | −22,631−1.5% | Reduced |
| Mackenzie Financial Corp | 1,464,985 | $155.1M | 0.18% | +290,269+24.7% | Added |
| Pictet Asset Management Holding SA | 1,466,221 | $154.3M | 0.15% | −101,437−6.5% | Reduced |
| Susquehanna International Group, LLP | 1,459,133 | $153.6M | 0.21% | +160,334+12.3% | Added |
| Colony Group, LLC | 1,427,544 | $149.6M | 0.17% | +191,758+15.5% | Added |
| APG Asset Management N.V. | 1,652,949 | $148.1M | 0.42% | −127,879−7.2% | Reduced |
| SG Americas Securities, LLC | 1,391,391 | $146.5M | 0.19% | +148,288+11.9% | Added |
| Nomura Asset Management Co Ltd | 1,385,592 | $145.8M | 0.37% | −83,512−5.7% | Reduced |
| Artisan Partners Limited Partnership | 1,383,297 | $145.6M | 0.22% | +48,700+3.6% | Added |
| Asset Management One Co.,Ltd. | 1,349,973 | $143.9M | 0.40% | +9,397+0.7% | Added |
| Virginia Retirement Systems Et Al | 1,356,338 | $142.8M | 0.85% | −151,000−10.0% | Reduced |
| BI Asset Management Fondsmaeglerselskab A/S | 1,357,299 | $141.5M | 1.25% | +110,415+8.9% | Added |
| Point72 Asset Management, L.P. | 1,338,449 | $140.9M | 0.22% | +75,696+6.0% | Added |
| Commonwealth Equity Services, LLC | 1,308,199 | $137.7M | 0.18% | −62,630−4.6% | Reduced |
| Brown Advisory Inc | 1,304,926 | $137.4M | 0.19% | +36,941+2.9% | Added |
| CIBC World Markets Inc. | 1,301,744 | $137.0M | 0.25% | +320,143+32.6% | Added |
| Kames Capital plc | 1,299,758 | $136.8M | 1.63% | +37,433+3.0% | Added |
| Baird Financial Group, Inc. | 1,296,021 | $136.4M | 0.21% | +29,226+2.3% | Added |
| State of Wisconsin Investment Board | 1,294,096 | $136.2M | 0.31% | −106,714−7.6% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 1,291,503 | $135.9M | 0.37% | −20,347−1.6% | Reduced |
| KLP Kapitalforvaltning AS | 1,275,270 | $135.2M | 0.52% | −48,900−3.7% | Reduced |
| KBC Group NV | 1,278,131 | $134.5M | 0.31% | +107,602+9.2% | Added |
| Regions Financial Corp | 1,277,678 | $134.5M | 0.86% | −5,809−0.5% | Reduced |
| Candriam Luxembourg S.C.A. | 1,275,687 | $134.3M | 0.67% | −143,474−10.1% | Reduced |
| Creative Planning | 1,246,651 | $131.2M | 0.09% | +170,143+15.8% | Added |
| Swiss Life Asset Management Ltd | 1,217,900 | $128.2M | 0.65% | +60,267+5.2% | Added |
| Credit Agricole S A | 1,197,416 | $126.0M | 0.35% | +134,485+12.7% | Added |
| Lazard Freres Gestion S.A.S. | 1,193,915 | $125.7M | 2.26% | +22,103+1.9% | Added |
| Quilter Plc | 1,191,309 | $125.4M | 2.11% | +8,471+0.7% | Added |
| 1832 Asset Management L.P. | 1,171,636 | $123.3M | 0.16% | +518,231+79.3% | Added |
| STRS Ohio | 1,158,977 | $122.0M | 0.46% | −17,995−1.5% | Reduced |
| Railway Pension Investments Ltd | 1,155,015 | $121.6M | 1.43% | −18,000−1.5% | Reduced |
| Cetera Investment Advisers | 1,138,416 | $119.8M | 0.13% | +61,979+5.8% | Added |
| Treasurer of the State of North Carolina | 1,131,565 | $119.1M | 0.38% | −1,324−0.1% | Reduced |
| Toronto Dominion Bank | 1,121,648 | $118.1M | 0.21% | −218,935−16.3% | Reduced |
| UniSuper Management Pty Ltd | 1,099,561 | $115.7M | 0.69% | +12,438+1.1% | Added |
| Zacks Investment Management | 1,081,122 | $113.8M | 0.89% | +52,402+5.1% | Added |
| Public Employees Retirement System of Ohio | 1,057,736 | $111.3M | 0.35% | +29,296+2.8% | Added |
| Causeway Capital Management LLC | 1,044,617 | $110.0M | 1.51% | −89,440−7.9% | Reduced |
| CWM, LLC | 1,017,023 | $107.1M | 0.29% | +61,957+6.5% | Added |
| Quantinno Capital Management LP | 1,006,254 | $105.9M | 0.21% | +385,755+62.2% | Added |
| Woodline Partners LP | 1,004,699 | $105.8M | 0.41% | +96,155+10.6% | Added |
| Munich Reinsurance Co Stock Corp in Munich | 989,918 | $105.0M | 2.55% | −65,635−6.2% | Reduced |
| Ci Investments Inc. | 994,122 | $104.6M | 0.46% | −435,657−30.5% | Reduced |
| State of Tennessee, Treasury Department | 939,521 | $103.6M | 0.33% | −11,793−1.2% | Reduced |
| King Luther Capital Management Corp | 983,107 | $103.5M | 0.42% | −19,710−2.0% | Reduced |
| Mn Services Vermogensbeheer B.V. | 974,621 | $102.6M | 0.63% | +19,422+2.0% | Added |
| Actiam N.V. | 961,932 | $101.3M | 1.02% | +961,932 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 954,267 | $100.4M | 0.22% | −127,430−11.8% | Reduced |
| DnB Asset Management AS | 950,334 | $100.0M | 0.35% | +201,907+27.0% | Added |
| Ieq Capital, LLC | 941,491 | $99.1M | 0.30% | +155,322+19.8% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 934,119 | $98.3M | 0.17% | −41,760−4.3% | Reduced |
| Comerica Bank | 932,997 | $98.2M | 0.39% | −33,676−3.5% | Reduced |
| Commerce Bank | 932,790 | $98.2M | 0.54% | +214,718+29.9% | Added |
| Mediolanum International Funds Ltd | 915,849 | $97.1M | 0.97% | +18,561+2.1% | Added |
| J. Safra Sarasin Holding AG | 920,425 | $96.9M | 1.58% | +148,461+19.2% | Added |
| Sarasin & Partners LLP | 915,194 | $96.3M | 1.00% | −32,675−3.4% | Reduced |
| Allspring Global Investments Holdings, LLC | 902,306 | $96.1M | 0.16% | +306,767+51.5% | Added |
| Brandywine Global Investment Management, LLC | 905,795 | $95.3M | 0.64% | +818,978+943.3% | Added |