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, 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
- 3,319
- +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
- 1,427 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 | 3,854 | $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, 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 |
|---|---|---|---|---|---|
| Vanguard Group Inc | 252,136,910 | $21.2B | 0.32% | −777,516−0.3% | Reduced |
| BlackRock, Inc. | 214,876,600 | $18.0B | 0.32% | −3,464,232−1.6% | Reduced |
| State Street Corp | 118,180,178 | $10.0B | 0.35% | −313,686−0.3% | Reduced |
| Wellington Management Group LLP | 75,279,104 | $6.32B | 1.11% | −1,577,388−2.1% | Reduced |
| Geode Capital Management, LLC | 59,798,874 | $5.01B | 0.32% | +846,193+1.4% | Added |
| Charles Schwab Investment Management Inc | 53,699,460 | $4.51B | 0.72% | −166,006−0.3% | Reduced |
| Morgan Stanley | 44,586,535 | $3.74B | 0.23% | +385,841+0.9% | Added |
| JPMorgan Chase & Co | 35,201,647 | $2.95B | 0.19% | +3,379,875+10.6% | Added |
| FMR LLC | 33,426,750 | $2.81B | 0.15% | +1,860,625+5.9% | Added |
| Northern Trust Corp | 27,933,141 | $2.34B | 0.30% | −812,286−2.8% | Reduced |
| Bank of America Corp | 26,449,436 | $2.22B | 0.17% | −1,571,698−5.6% | Reduced |
| Fisher Asset Management, LLC | 24,068,126 | $2.02B | 0.73% | −945,571−3.8% | Reduced |
| Bank of New York Mellon Corp | 21,794,354 | $1.83B | 0.33% | −203,076−0.9% | Reduced |
| Legal & General Group Plc | 20,659,157 | $1.73B | 0.39% | +1,156,112+5.9% | Added |
| Invesco Ltd. | 19,844,936 | $1.67B | 0.26% | +2,821,766+16.6% | Added |
| UBS Asset Management Americas Inc | 19,749,865 | $1.66B | 0.36% | −5,383,464−21.4% | Reduced |
| Arrowstreet Capital, Limited Partnership | 18,708,703 | $1.57B | 0.99% | −747,393−3.8% | Reduced |
| UBS Group AG | 16,906,008 | $1.42B | 0.28% | +5,1940.0% | Added |
| Deutsche Bank AG | 16,846,361 | $1.41B | 0.47% | −196,261−1.2% | Reduced |
| Franklin Resources Inc | 16,746,990 | $1.41B | 0.35% | −10,285,611−38.0% | Reduced |
| Amundi | 15,214,187 | $1.35B | 0.43% | −1,318,470−8.0% | Reduced |
| Ameriprise Financial Inc | 15,933,909 | $1.34B | 0.31% | +2,735,459+20.7% | Added |
| Goldman Sachs Group Inc | 15,021,367 | $1.26B | 0.18% | −3,370,286−18.3% | Reduced |
| State Farm Mutual Automobile Insurance Co | 13,794,969 | $1.16B | 0.97% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 13,601,321 | $1.14B | 0.12% | +2,803,331+26.0% | Added |
| Royal Bank of Canada | 12,808,343 | $1.08B | 0.19% | −744,797−5.5% | Reduced |
| Dimensional Fund Advisors LP | 10,877,574 | $912.5M | 0.20% | +254,432+2.4% | Added |
| Wells Fargo & Company | 10,448,560 | $876.9M | 0.18% | −934,528−8.2% | Reduced |
| Nordea Investment Management AB | 10,945,187 | $876.6M | 0.77% | +209,759+2.0% | Added |
| AQR Capital Management LLC | 10,658,099 | $851.4M | 0.55% | +1,870,827+21.3% | Added |
| Harris Associates L PSuperinvestorHarris Associates (Oakmark) | 9,823,608 | $824.5M | 1.32% | +692,290+7.6% | Added |
| Stifel Financial Corp | 8,720,884 | $731.9M | 0.67% | +963,749+12.4% | Added |
| HSBC Holdings PLC | 8,387,858 | $701.9M | 0.41% | +600,157+7.7% | Added |
| Swedbank AB | 8,344,126 | $700.3M | 0.71% | +469,360+6.0% | Added |
| Alliancebernstein L.P. | 8,229,793 | $690.7M | 0.22% | −624,383−7.1% | Reduced |
| The PNC Financial Services Group, Inc. | 7,867,962 | $660.4M | 0.40% | +144,703+1.9% | Added |
| Aristotle Capital Management, LLC | 7,817,938 | $656.2M | 1.27% | −317,614−3.9% | Reduced |
| California Public Employees Retirement System | 7,566,306 | $635.0M | 0.38% | −110,704−1.4% | Reduced |
| Massachusetts Financial Services Co | 7,549,020 | $633.6M | 0.20% | −130,846−1.7% | Reduced |
| Barclays PLC | 7,512,887 | $630.6M | 0.23% | +1,616,919+27.4% | Added |
| Barrow Hanley Mewhinney & Strauss LLC | 7,415,270 | $622.4M | 1.98% | −1,291,412−14.8% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 7,366,188 | $618.2M | 0.36% | −70,408−0.9% | Reduced |
| Swiss National Bank | 7,238,251 | $607.5M | 0.35% | −379,300−5.0% | Reduced |
| Lazard Asset Management LLC | 7,063,672 | $592.9M | 0.80% | +454,605+6.9% | Added |
| Raymond James Financial Inc | 7,007,453 | $588.1M | 0.19% | −629,712−8.2% | Reduced |
| Nuveen, LLC | 6,908,110 | $579.8M | 0.15% | −1,110,643−13.9% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 6,625,350 | $556.1M | 1.57% | +155,777+2.4% | Added |
| BNP Paribas Arbitrage, SA | 5,730,421 | $481.0M | 0.38% | −913,912−13.8% | Reduced |
| National Pension Service | 5,707,385 | $479.0M | 0.37% | +175,582+3.2% | Added |
| Assenagon Asset Management S.A. | 5,496,664 | $461.3M | 0.68% | +3,618,532+192.7% | Added |
| Bank of Montreal | 5,398,269 | $453.1M | 0.20% | +722,407+15.4% | Added |
| Van Eck Associates Corp | 5,325,033 | $446.9M | 0.42% | +2,029,342+61.6% | Added |
| LSV Asset Management | 5,299,273 | $444.8M | 0.98% | −37,163−0.7% | Reduced |
| Pacer Advisors, Inc. | 5,237,153 | $439.6M | 1.13% | −804,609−13.3% | Reduced |
| Principal Financial Group Inc | 5,209,360 | $437.2M | 0.22% | −420,231−7.5% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 5,172,952 | $434.4M | 0.31% | +195,133+3.9% | Added |
| DekaBank Deutsche Girozentrale | 5,427,912 | $424.7M | 0.71% | 00.0% | Unchanged |
| First Trust Advisors LP | 5,011,611 | $420.6M | 0.31% | −38,130−0.8% | Reduced |
| Clearbridge Investments, LLC | 4,970,487 | $417.2M | 0.31% | +79,420+1.6% | Added |
| Beutel, Goodman & Co Ltd. | 4,852,678 | $407.3M | 2.45% | −251,758−4.9% | Reduced |
| Caisse de Depot Et Placement du Quebec | 4,767,070 | $400.1M | 0.72% | +346,959+7.8% | Added |
| Victory Capital Management Inc | 4,733,323 | $397.3M | 0.25% | +301,155+6.8% | Added |
| American Century Companies Inc | 4,559,640 | $382.7M | 0.19% | +787,181+20.9% | Added |
| Citigroup Inc | 4,522,390 | $379.6M | 0.26% | −585,368−11.5% | Reduced |
| Standard Life Aberdeen plc | 4,479,623 | $363.0M | 0.57% | −46,708−1.0% | Reduced |
| Rhumbline Advisers | 4,100,358 | $344.1M | 0.28% | −8,850−0.2% | Reduced |
| California State Teachers Retirement System | 4,060,037 | $340.8M | 0.35% | −3,272−0.1% | Reduced |
| HighTower Advisors, LLC | 3,869,125 | $324.7M | 0.37% | +102,336+2.7% | Added |
| Canada Pension Plan Investment Board | 3,848,556 | $323.0M | 0.23% | +211,556+5.8% | Added |
| New York State Common Retirement Fund | 3,667,999 | $307.9M | 0.40% | +45,709+1.3% | Added |
| Prudential Financial Inc | 3,580,045 | $300.5M | 0.36% | −249,296−6.5% | Reduced |
| Thornburg Investment Management Inc | 3,520,631 | $295.5M | 3.85% | −1,209,010−25.6% | Reduced |
| D. E. Shaw & Co., Inc. | 3,467,852 | $291.1M | 0.23% | −6,899,937−66.6% | Reduced |
| Great West Life Assurance Co | 3,693,267 | $290.1M | 0.42% | +60,374+1.7% | Added |
| Los Angeles Capital Management LLC | 3,412,448 | $286.4M | 0.97% | +956,879+39.0% | Added |
| Macquarie Group Ltd | 3,404,859 | $285.8M | 0.33% | −69,200−2.0% | Reduced |
| Envestnet Asset Management Inc | 3,396,041 | $285.0M | 0.08% | −349,341−9.3% | Reduced |
| Capital International Investors | 3,393,368 | $284.8M | 0.05% | −671,607−16.5% | Reduced |
| Russell Investments Group, Ltd. | 3,426,693 | $284.2M | 0.32% | −256,688−7.0% | Reduced |
| LPL Financial LLC | 3,372,059 | $283.0M | 0.08% | +59,942+1.8% | Added |
| Allianz Asset Management GmbH | 3,232,938 | $271.3M | 0.33% | +1,149,763+55.2% | Added |
| Royal London Asset Management Ltd | 3,199,871 | $268.6M | 0.58% | −206,475−6.1% | Reduced |
| Capital Wealth Planning, LLC | 3,191,442 | $267.9M | 1.89% | +1,604,656+101.1% | Added |
| Bank Julius Baer & Co. Ltd, Zurich | 3,063,051 | $257.1M | 0.72% | −5,656−0.2% | Reduced |
| Smead Capital Management, Inc. | 3,034,674 | $254.7M | 4.92% | −232,644−7.1% | Reduced |
| Robeco Institutional Asset Management B.V. | 3,006,132 | $252.3M | 0.37% | −157,285−5.0% | Reduced |
| Aviva PLC | 2,772,306 | $232.7M | 0.42% | +88,567+3.3% | Added |
| Ensign Peak Advisors, Inc | 2,772,025 | $232.7M | 0.38% | −379,724−12.0% | Reduced |
| Neuberger Berman Group LLC | 2,612,013 | $219.0M | 0.16% | +1,369,306+110.2% | Added |
| Man Group plc | 2,570,911 | $215.8M | 0.42% | −377,191−12.8% | Reduced |
| Mariner, LLC | 2,527,966 | $212.1M | 0.27% | +35,579+1.4% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 2,450,638 | $205.7M | 0.45% | +142,125+6.2% | Added |
| Brandes Investment Partners, LP | 2,422,667 | $203.3M | 1.63% | +510,439+26.7% | Added |
| CI Private Wealth, LLC | 2,427,066 | $202.7M | 0.32% | −2,510,882−50.8% | Reduced |
| Fayez Sarofim & Co | 2,406,322 | $202.0M | 0.47% | −214,403−8.2% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 2,405,583 | $201.9M | 0.34% | +79,491+3.4% | Added |
| Thrivent Financial for Lutherans | 2,379,666 | $199.7M | 0.39% | +158,324+7.1% | Added |
| Employees Provident Fund Board | 2,354,034 | $197.6M | 1.58% | +665,000+39.4% | Added |
| Cullen Capital Management LLC | 2,343,452 | $196.7M | 2.15% | +66,976+2.9% | Added |
| Two Sigma Advisers, LP | 2,320,900 | $194.8M | 0.39% | −3,357,700−59.1% | Reduced |