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, Q3 2025
Institutional positions in Merck & Co., Inc. as of Sep 30, 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
- 3,320
- +42 vs. Q2 2025
- Shares held
- 1.90B
- −25.7M (−1.3%) vs. Q2 2025
- Total value
- $159.8B
- +$6.99B (+4.6%) vs. Q2 2025
- New holders
- 191
- 1,361 more added
- Sold out
- 149
- 1,428 more reduced
60 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Capital Research Global Investors | 2,310,615 | $193.9M | 0.04% | −1,151,654−33.3% | Reduced |
| Natixis Advisors, L.P. | 2,310,247 | $193.9M | 0.28% | +371,039+19.1% | Added |
| State Board of Administration of Florida Retirement System | 2,291,300 | $192.3M | 0.34% | −147,683−6.1% | Reduced |
| Acadian Asset Management LLC | 2,202,965 | $184.9M | 0.32% | −1,975,420−47.3% | Reduced |
| New York State Teachers Retirement System | 2,142,056 | $179.8M | 0.35% | −33,158−1.5% | Reduced |
| Janus Henderson Group PLC | 2,115,541 | $177.5M | 0.08% | +1,573,424+290.2% | Added |
| TD Asset Management Inc | 2,078,795 | $174.5M | 0.14% | +87,543+4.4% | Added |
| Qube Research & Technologies Ltd | 2,063,967 | $173.2M | 0.25% | −1,958,497−48.7% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 2,060,529 | $172.9M | 0.54% | +15,366+0.8% | Added |
| Two Sigma Investments, LP | 1,969,101 | $165.3M | 0.25% | −469,247−19.2% | Reduced |
| ABN AMRO Bank N.V. | 1,919,002 | $160.5M | 1.58% | +37,932+2.0% | Added |
| Danske Bank A/S | 1,906,030 | $160.0M | 0.40% | −178,208−8.6% | Reduced |
| Janney Montgomery Scott LLC | 1,851,047 | $155.4M | 0.37% | +6,642+0.4% | Added |
| Wealth Enhancement Advisory Services, LLC | 1,760,748 | $154.3M | 0.23% | +98,009+5.9% | Added |
| Korea Investment CORP | 1,777,147 | $149.2M | 0.31% | −198,111−10.0% | Reduced |
| Storebrand Asset Management AS | 1,770,296 | $148.6M | 0.39% | +70,058+4.1% | Added |
| SEI Investments Co | 1,753,537 | $147.2M | 0.16% | +149,395+9.3% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 1,730,472 | $145.2M | 0.58% | −97,269−5.3% | Reduced |
| Manufacturers Life Insurance Company, The | 1,723,476 | $144.7M | 0.12% | −1,259,430−42.2% | Reduced |
| National Bank of Canada | 1,709,722 | $143.5M | 0.16% | −1,834,181−51.8% | Reduced |
| Cerity Partners LLC | 1,709,626 | $143.5M | 0.23% | −277,099−13.9% | Reduced |
| Antipodes Partners Ltd | 1,671,552 | $140.3M | 3.15% | −142,708−7.9% | Reduced |
| Truist Financial Corp | 1,653,142 | $138.7M | 0.19% | −140,573−7.8% | Reduced |
| Mondrian Investment Partners LTD | 1,648,317 | $138.3M | 2.31% | +1,648,317 | New |
| Alecta Pensionsforsakring, Omsesidigt | 1,640,300 | $137.6M | 0.61% | 00.0% | Unchanged |
| Great Lakes Advisors, LLC | 1,637,843 | $137.5M | 1.15% | −17,692−1.1% | Reduced |
| US Bancorp | 1,633,247 | $137.1M | 0.16% | −68,963−4.1% | Reduced |
| Handelsbanken Fonder AB | 1,618,290 | $135.8M | 0.43% | −26,136−1.6% | Reduced |
| Schroder Investment Management Group | 1,574,051 | $132.1M | 0.10% | +85,833+5.8% | Added |
| Pictet Asset Management Holding SA | 1,567,658 | $131.6M | 0.13% | +32,583+2.1% | Added |
| Bessemer Group Inc | 1,527,844 | $128.2M | 0.20% | +37,142+2.5% | Added |
| APG Asset Management N.V. | 1,780,828 | $127.2M | 0.36% | −120,916−6.4% | Reduced |
| Virginia Retirement Systems Et Al | 1,507,338 | $126.5M | 0.82% | +52,100+3.6% | Added |
| M&T Bank Corp | 1,498,837 | $125.8M | 0.42% | −112,150−7.0% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 1,483,796 | $124.5M | 0.11% | +140,890+10.5% | Added |
| Nomura Asset Management Co Ltd | 1,469,104 | $123.3M | 0.32% | −75,924−4.9% | Reduced |
| Ci Investments Inc. | 1,429,779 | $120.0M | 0.44% | +663,687+86.6% | Added |
| Candriam Luxembourg S.C.A. | 1,419,161 | $119.1M | 0.62% | −234,938−14.2% | Reduced |
| State of Wisconsin Investment Board | 1,400,810 | $117.6M | 0.27% | −83,226−5.6% | Reduced |
| Bank of Nova Scotia | 1,377,185 | $115.6M | 0.20% | −53,617−3.7% | Reduced |
| Commonwealth Equity Services, LLC | 1,370,829 | $115.1M | 0.15% | −127,954−8.5% | Reduced |
| Asset Management One Co.,Ltd. | 1,340,576 | $112.5M | 0.33% | +55,089+4.3% | Added |
| Toronto Dominion Bank | 1,340,583 | $112.3M | 0.22% | +111,345+9.1% | Added |
| KLP Kapitalforvaltning AS | 1,324,170 | $112.0M | 0.44% | +44,100+3.4% | Added |
| Artisan Partners Limited Partnership | 1,334,597 | $112.0M | 0.16% | +33,849+2.6% | Added |
| Chevy Chase Trust Holdings, Inc. | 1,311,850 | $110.1M | 0.30% | −53,574−3.9% | Reduced |
| Susquehanna International Group, LLP | 1,298,799 | $109.0M | 0.16% | −601,058−31.6% | Reduced |
| Rockefeller Capital Management L.P. | 1,292,727 | $108.5M | 0.21% | +46,549+3.7% | Added |
| Regions Financial Corp | 1,283,487 | $107.7M | 0.70% | −24,516−1.9% | Reduced |
| Brown Advisory Inc | 1,267,985 | $106.4M | 0.14% | +912+0.1% | Added |
| Baird Financial Group, Inc. | 1,266,795 | $106.3M | 0.17% | +19,629+1.6% | Added |
| Point72 Asset Management, L.P. | 1,262,753 | $106.0M | 0.23% | +1,256,953+21,671.6% | Added |
| Kames Capital plc | 1,262,325 | $105.2M | 1.25% | −70,398−5.3% | Reduced |
| SG Americas Securities, LLC | 1,243,103 | $104.3M | 0.38% | +1,033,828+494.0% | Added |
| Captrust Financial Advisors | 1,238,450 | $103.9M | 0.21% | +14,176+1.2% | Added |
| Colony Group, LLC | 1,235,786 | $103.8M | 0.17% | +22,132+1.8% | Added |
| BI Asset Management Fondsmaeglerselskab A/S | 1,246,884 | $103.7M | 0.94% | +254,350+25.6% | Added |
| AXA Investment Managers S.A. | 1,209,059 | $101.5M | 0.27% | +1,209,059 | New |
| Quilter Plc | 1,182,838 | $99.3M | 1.70% | +3,355+0.3% | Added |
| STRS Ohio | 1,176,972 | $98.8M | 0.36% | +119,095+11.3% | Added |
| Mackenzie Financial Corp | 1,174,716 | $98.6M | 0.12% | +111,326+10.5% | Added |
| Railway Pension Investments Ltd | 1,173,015 | $98.5M | 1.33% | +26,700+2.3% | Added |
| Lazard Freres Gestion S.A.S. | 1,171,812 | $98.3M | 1.87% | +1,171,812 | Added |
| KBC Group NV | 1,170,529 | $98.2M | 0.24% | −1,309,338−52.8% | Reduced |
| Swiss Life Asset Management Ltd | 1,157,633 | $97.2M | 0.51% | +42,471+3.8% | Added |
| Squarepoint Ops LLC | 1,135,068 | $95.3M | 0.20% | −1,967,514−63.4% | Reduced |
| Causeway Capital Management LLC | 1,134,057 | $95.2M | 1.26% | +151,397+15.4% | Added |
| Treasurer of the State of North Carolina | 1,132,889 | $95.1M | 0.29% | −44,139−3.8% | Reduced |
| UniSuper Management Pty Ltd | 1,087,123 | $91.2M | 0.56% | +160,345+17.3% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1,081,697 | $90.8M | 0.21% | +10,055+0.9% | Added |
| Creative Planning | 1,076,508 | $90.4M | 0.07% | +131,857+14.0% | Added |
| Cetera Investment Advisers | 1,076,437 | $90.3M | 0.10% | +338,470+45.9% | Added |
| Credit Agricole S A | 1,062,931 | $89.2M | 0.30% | +1,062,931 | New |
| Munich Reinsurance Co Stock Corp in Munich | 1,055,553 | $88.6M | 2.22% | +1,055,553 | New |
| Adage Capital Partners GP, L.L.C. | 1,053,634 | $88.4M | 0.14% | −371,552−26.1% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 1,030,000 | $86.4M | 1.32% | +172,276+20.1% | Added |
| Bahl & Gaynor Inc | 1,029,841 | $86.4M | 0.43% | −1,406,091−57.7% | Reduced |
| Zacks Investment Management | 1,028,720 | $86.3M | 0.69% | +15,557+1.5% | Added |
| Public Employees Retirement System of Ohio | 1,028,440 | $86.3M | 0.27% | −8,529−0.8% | Reduced |
| King Luther Capital Management Corp | 1,002,817 | $84.2M | 0.35% | −263,609−20.8% | Reduced |
| CIBC World Markets Inc. | 981,601 | $82.4M | 0.17% | +2,785+0.3% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 975,879 | $81.9M | 0.15% | +717,309+277.4% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 978,229 | $81.4M | 0.21% | −300,308−23.5% | Reduced |
| Citadel Advisors LLC | 968,054 | $81.2M | 0.07% | +968,054 | New |
| Comerica Bank | 966,673 | $81.1M | 0.31% | −38,732−3.9% | Reduced |
| Mn Services Vermogensbeheer B.V. | 955,199 | $80.2M | 0.52% | +14,500+1.5% | Added |
| CWM, LLC | 955,066 | $80.2M | 0.24% | +183,089+23.7% | Added |
| State of Tennessee, Treasury Department | 951,314 | $79.8M | 0.27% | +98,354+11.5% | Added |
| Platinum Investment Management Ltd | 938,786 | $78.8M | 5.09% | +62,966+7.2% | Added |
| Voloridge Investment Management, LLC | 938,715 | $78.8M | 0.26% | −807,416−46.2% | Reduced |
| Resona Asset Management Co.,Ltd. | 936,797 | $77.9M | 0.37% | −44,882−4.6% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 924,129 | $77.6M | 0.67% | −6,000−0.6% | Reduced |
| Woodline Partners LP | 908,544 | $76.3M | 0.36% | +130,118+16.7% | Added |
| Advisor Group Holdings, Inc. | 901,959 | $75.1M | 0.11% | +185,903+26.0% | Added |
| Sarasin & Partners LLP | 947,869 | $74.5M | 0.73% | +773+0.1% | Added |
| Marshall Wace, LLP | 883,900 | $74.2M | 0.08% | −2,260,600−71.9% | Reduced |
| State of New Jersey Common Pension Fund D | 878,529 | $73.7M | 0.27% | +28,474+3.3% | Added |
| Natixis | 869,322 | $73.0M | 0.39% | +268,394+44.7% | Added |
| Teacher Retirement System of Texas | 863,314 | $72.5M | 0.29% | −199,740−18.8% | Reduced |
| Lansforsakringar Fondforvaltning AB (publ) | 856,743 | $71.9M | 0.37% | +19,036+2.3% | Added |