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, Q1 2026
Institutional positions in Merck & Co., Inc. as of Mar 31, 2026. 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
- 3,812
- +195 vs. Q4 2025
- Shares held
- 1.93B
- +269.1M (+16.2%) vs. Q4 2025
- Total value
- $231.9B
- +$56.6B (+32.3%) vs. Q4 2025
- New holders
- 316
- 1,466 more added
- Sold out
- 121
- 1,594 more reduced
57 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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 | 3,812 | $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 | 3,501 | $221.8B |
| Q2 2024 | 3,557 | $242.3B |
| Q1 2024 | 3,546 | $256.9B |
| Q4 2023 | 3,443 | $211.6B |
| Q3 2023 | 3,221 | $197.7B |
| Q2 2023 | 3,261 | $222.8B |
| Q1 2023 | 3,187 | $205.1B |
| Q4 2022 | 3,243 | $212.2B |
| Q3 2022 | 2,996 | $162.7B |
| Q2 2022 | 3,019 | $171.5B |
| Q1 2022 | 2,961 | $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, Q1 2026
Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Brandes Investment Partners, LP | 2,302,562 | $277.0M | 1.96% | −164,963−6.7% | Reduced |
| TD Asset Management Inc | 2,288,576 | $275.3M | 0.22% | +57,755+2.6% | Added |
| Truist Financial Corp | 2,221,085 | $267.2M | 0.36% | +172,264+8.4% | Added |
| BNP Paribas Arbitrage, SA | 2,206,233 | $265.4M | 0.17% | −207,474−8.6% | Reduced |
| State Board of Administration of Florida Retirement System | 2,204,006 | $265.1M | 0.50% | −27,749−1.2% | Reduced |
| SEI Investments Co | 2,102,456 | $252.9M | 0.23% | +256,265+13.9% | Added |
| Cullen Capital Management LLC | 2,073,354 | $249.4M | 2.56% | −217,687−9.5% | Reduced |
| Capital Research Global Investors | 2,061,571 | $248.0M | 0.04% | −50,571−2.4% | Reduced |
| New York State Teachers Retirement System | 2,057,639 | $247.5M | 0.50% | −15,283−0.7% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 2,054,074 | $247.1M | 0.43% | −197,210−8.8% | Reduced |
| Millennium Management LLC | 1,970,691 | $237.1M | 0.18% | −4,829,660−71.0% | Reduced |
| Prudential Financial Inc | 1,962,332 | $236.0M | 0.29% | −153,809−7.3% | Reduced |
| National Bank of Canada | 1,961,390 | $235.9M | 0.24% | −45,865−2.3% | Reduced |
| Korea Investment CORP | 1,897,151 | $228.2M | 0.47% | −108,886−5.4% | Reduced |
| Employees Provident Fund Board | 1,895,165 | $228.0M | 1.72% | −519,869−21.5% | Reduced |
| Handelsbanken Fonder AB | 1,864,305 | $224.3M | 0.75% | +21,263+1.2% | Added |
| Manufacturers Life Insurance Company, The | 1,845,587 | $222.0M | 0.19% | −5,073−0.3% | Reduced |
| Captrust Financial Advisors | 1,842,858 | $221.7M | 0.39% | +177,639+10.7% | Added |
| Balyasny Asset Management LLC | 1,812,608 | $218.0M | 0.43% | −374,652−17.1% | Reduced |
| Van Eck Associates Corp | 1,792,705 | $215.6M | 0.16% | −2,071,624−53.6% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 1,787,407 | $215.0M | 0.62% | −94,125−5.0% | Reduced |
| Danske Bank A/S | 1,779,179 | $214.0M | 0.52% | −86,265−4.6% | Reduced |
| Schroder Investment Management Group | 1,756,247 | $211.3M | 0.17% | +69,766+4.1% | Added |
| Rockefeller Capital Management L.P. | 1,752,898 | $210.9M | 0.37% | +30,752+1.8% | Added |
| Storebrand Asset Management AS | 1,748,762 | $210.4M | 0.60% | +53,896+3.2% | Added |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 1,705,178 | $205.1M | 0.19% | −38,554−2.2% | Reduced |
| Fayez Sarofim & Co | 1,700,379 | $204.5M | 0.52% | −39,510−2.3% | Reduced |
| Janney Montgomery Scott LLC | 1,679,664 | $202.0M | 0.50% | −132,888−7.3% | Reduced |
| SG Americas Securities, LLC | 1,665,520 | $200.3M | 0.22% | +274,129+19.7% | Added |
| SEB Asset Management AB | 1,642,285 | $197.6M | 0.84% | +1,642,285 | New |
| Alecta Pensionsforsakring, Omsesidigt | 1,640,300 | $197.3M | 0.96% | 00.0% | Unchanged |
| Cerity Partners LLC | 1,639,510 | $197.2M | 0.28% | −79,940−4.6% | Reduced |
| Omers Administration Corp | 1,598,927 | $192.3M | 1.24% | +1,323,314+480.1% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 1,586,105 | $190.8M | 0.47% | −39,209−2.4% | Reduced |
| Mondrian Investment Partners LTD | 1,581,527 | $190.2M | 3.29% | −28,705−1.8% | Reduced |
| Nomura Asset Management Co Ltd | 1,579,855 | $190.0M | 0.49% | +194,263+14.0% | Added |
| Great Lakes Advisors, LLC | 1,569,387 | $188.8M | 1.57% | −107,724−6.4% | Reduced |
| US Bancorp | 1,554,747 | $187.0M | 0.23% | −26,074−1.6% | Reduced |
| Fifth Third Bancorp | 1,543,397 | $185.7M | 0.34% | +954,428+162.1% | Added |
| Pictet Asset Management Holding SA | 1,486,425 | $178.8M | 0.19% | +20,204+1.4% | Added |
| APG Asset Management N.V. | 1,708,121 | $178.3M | 0.57% | +55,172+3.3% | Added |
| PFA Pension, Forsikringsaktieselskab | 1,467,839 | $176.6M | 0.53% | −52,607−3.5% | Reduced |
| M&T Bank Corp | 1,459,782 | $175.6M | 0.58% | −16,424−1.1% | Reduced |
| Bank of Nova Scotia | 1,457,238 | $175.3M | 0.31% | −498,962−25.5% | Reduced |
| Asset Management One Co.,Ltd. | 1,441,306 | $173.4M | 0.51% | +91,333+6.8% | Added |
| Antipodes Partners Ltd | 1,441,266 | $173.4M | 3.34% | −134,545−8.5% | Reduced |
| Colony Group, LLC | 1,435,704 | $172.7M | 0.19% | +8,160+0.6% | Added |
| Swiss Life Asset Management Ltd | 1,381,851 | $166.2M | 0.82% | +163,951+13.5% | Added |
| State of Wisconsin Investment Board | 1,366,001 | $164.3M | 0.38% | +71,905+5.6% | Added |
| Nomura Asset Management International Inc. | 1,345,718 | $161.9M | 0.28% | −618,069−31.5% | Reduced |
| Brown Advisory Inc | 1,341,293 | $161.3M | 0.27% | +36,367+2.8% | Added |
| Quantinno Capital Management LP | 1,333,289 | $160.4M | 0.27% | +327,035+32.5% | Added |
| Candriam Luxembourg S.C.A. | 1,322,654 | $159.1M | 0.83% | +46,967+3.7% | Added |
| Regions Financial Corp | 1,317,370 | $158.5M | 1.03% | +39,692+3.1% | Added |
| Creative Planning | 1,308,297 | $157.4M | 0.11% | +61,646+4.9% | Added |
| Wealth Enhancement Advisory Services, LLC | 1,431,644 | $157.3M | 0.35% | −365,790−20.4% | Reduced |
| DJE Kapital AG | 1,306,098 | $156.7M | 3.47% | +1,306,098 | New |
| Kames Capital plc | 1,274,506 | $153.1M | 2.03% | −25,252−1.9% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 1,253,128 | $150.7M | 0.43% | −38,375−3.0% | Reduced |
| CIBC World Markets Inc. | 1,239,951 | $149.2M | 0.26% | −61,793−4.7% | Reduced |
| Vanguard Investments Australia, Ltd. | 1,238,154 | $148.9M | 0.43% | +1,238,154 | New |
| Ci Investments Inc. | 1,237,783 | $148.9M | 0.72% | +243,661+24.5% | Added |
| Commonwealth Equity Services, LLC | 1,222,577 | $147.1M | 0.21% | −85,622−6.5% | Reduced |
| KBC Group NV | 1,217,611 | $146.5M | 0.37% | −60,520−4.7% | Reduced |
| KLP Kapitalforvaltning AS | 1,196,870 | $144.8M | 0.57% | −78,400−6.1% | Reduced |
| Cetera Investment Advisers | 1,193,872 | $143.6M | 0.15% | +55,456+4.9% | Added |
| Commerce Bank | 1,188,031 | $142.9M | 0.69% | +255,241+27.4% | Added |
| Quilter Plc | 1,186,720 | $142.8M | 2.51% | −4,589−0.4% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 1,182,179 | $142.2M | 0.78% | +385,150+48.3% | Added |
| Baird Financial Group, Inc. | 1,163,093 | $139.9M | 0.22% | −132,928−10.3% | Reduced |
| Treasurer of the State of North Carolina | 1,147,989 | $138.1M | 0.43% | +16,424+1.5% | Added |
| Lazard Freres Gestion S.A.S. | 1,132,358 | $136.2M | 2.69% | −61,557−5.2% | Reduced |
| BI Asset Management Fondsmaeglerselskab A/S | 1,127,730 | $134.6M | 1.41% | −229,569−16.9% | Reduced |
| UniSuper Management Pty Ltd | 1,099,802 | $132.3M | 0.87% | +2410.0% | Added |
| STRS Ohio | 1,098,353 | $132.1M | 0.52% | −60,624−5.2% | Reduced |
| Zacks Investment Management | 1,085,250 | $130.5M | 1.05% | +4,128+0.4% | Added |
| Bessemer Group Inc | 1,081,897 | $130.1M | 0.20% | −972,240−47.3% | Reduced |
| Woodline Partners LP | 1,071,080 | $128.8M | 0.49% | +66,381+6.6% | Added |
| Artisan Partners Limited Partnership | 1,061,859 | $127.7M | 0.21% | −321,438−23.2% | Reduced |
| CIBC Bancorp USA Inc. | 1,047,115 | $126.0M | 0.17% | +1,047,115 | New |
| Public Employees Retirement System of Ohio | 1,043,669 | $125.5M | 0.41% | −14,067−1.3% | Reduced |
| Susquehanna International Group, LLP | 1,033,222 | $124.3M | 0.16% | −425,911−29.2% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1,024,300 | $123.2M | 0.27% | +70,033+7.3% | Added |
| CWM, LLC | 1,010,525 | $121.6M | 0.32% | −6,498−0.6% | Reduced |
| King Luther Capital Management Corp | 983,617 | $118.3M | 0.51% | +510+0.1% | Added |
| Actiam N.V. | 979,681 | $117.8M | 1.15% | +17,749+1.8% | Added |
| Mn Services Vermogensbeheer B.V. | 973,621 | $117.1M | 0.77% | −1,000−0.1% | Reduced |
| Zurich Insurance Group Ltd | 967,598 | $116.4M | 0.91% | +438,295+82.8% | Added |
| State of Tennessee, Treasury Department | 964,590 | $116.0M | 0.39% | +25,069+2.7% | Added |
| Toronto Dominion Bank | 961,055 | $115.6M | 0.22% | −160,593−14.3% | Reduced |
| J. Safra Sarasin Holding AG | 960,714 | $115.5M | 1.97% | +40,289+4.4% | Added |
| Ieq Capital, LLC | 941,353 | $113.2M | 0.53% | −1380.0% | Reduced |
| Point72 Asset Management, L.P. | 921,077 | $110.8M | 0.19% | −417,372−31.2% | Reduced |
| Blair William & Co | 901,789 | $108.5M | 0.31% | +67,765+8.1% | Added |
| DnB Asset Management AS | 897,124 | $107.9M | 0.38% | −53,210−5.6% | Reduced |
| Toroso Investments, LLC | 895,792 | $106.9M | 0.33% | +590,676+193.6% | Added |
| Groupama Asset Managment | 874,963 | $105.2M | 1.54% | −25,823−2.9% | Reduced |
| Macquarie Group Ltd | 870,918 | $104.8M | 0.62% | −897,114−50.7% | Reduced |
| Capital International Investors | 870,261 | $104.7M | 0.02% | +9,526+1.1% | Added |
| TCW Group Inc | 862,459 | $103.7M | 0.78% | +78,642+10.0% | Added |