Merck & Co., Inc.
MRK- Exchange
- NYSE
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0000310158
No open-market purchases or sales by Merck & Co., Inc. insiders were filed in the last 90 days; 3,874 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, Q2 2026
Institutional positions in Merck & Co., Inc. as of Jun 30, 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
Q3 2026 data is still coming in: 3,523 institutions have reported holding MRK so far. See Q3 2026
- Institutional holders
- 3,874
- +98 vs. Q1 2026
- Shares held
- 1.98B
- +52.6M (+2.7%) vs. Q1 2026
- Total value
- $254.3B
- +$23.0B (+9.9%) vs. Q1 2026
- New holders
- 216
- 1,640 more added
- Sold out
- 118
- 1,517 more reduced
48 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 | 3,874 | $254.3B |
| Q1 2026 | 3,824 | $231.9B |
| Q4 2025 | 3,685 | $206.6B |
| Q3 2025 | 3,328 | $162.9B |
| Q2 2025 | 3,343 | $155.9B |
| Q1 2025 | 3,465 | $177.7B |
| Q4 2024 | 3,623 | $197.0B |
| Q3 2024 | 3,505 | $221.8B |
| Q2 2024 | 3,559 | $242.3B |
| Q1 2024 | 3,547 | $256.9B |
| Q4 2023 | 3,446 | $211.6B |
| Q3 2023 | 3,223 | $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 | 2,911 | $142.2B |
| Q3 2021 | 2,659 | $138.8B |
| Q2 2021 | 2,684 | $144.3B |
| Q1 2021 | 2,693 | $143.2B |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 226,999,837 | $29.2B | 0.43% | +1,169,507+0.5% | Added |
| Vanguard Capital Management LLC | 161,323,174 | $20.7B | 0.44% | +335,550+0.2% | Added |
| State Street Corp | 120,413,256 | $15.6B | 0.46% | +1,087,583+0.9% | Added |
| Wellington Management Group LLP | 86,249,283 | $11.1B | 1.91% | +1,934,312+2.3% | Added |
| Vanguard Portfolio Management LLC | 67,738,969 | $8.70B | 0.39% | +434,664+0.6% | Added |
| Geode Capital Management, LLC | 60,744,214 | $7.79B | 0.42% | +1,186,060+2.0% | Added |
| Charles Schwab Investment Management Inc | 54,365,289 | $6.99B | 0.93% | +4,600,064+9.2% | Added |
| Morgan Stanley | 48,641,158 | $6.25B | 0.33% | +1,008,671+2.1% | Added |
| FMR LLC | 45,440,355 | $5.84B | 0.25% | +924,345+2.1% | Added |
| JPMorgan Chase & Co | 43,886,420 | $5.68B | 0.33% | −9,086,563−17.2% | Reduced |
| Fisher Asset Management, LLC | 38,516,263 | $4.95B | 1.47% | +12,079,979+45.7% | Added |
| Norges Bank | 36,983,784 | $4.75B | 0.47% | +36,983,784 | New |
| Bank of America Corp | 30,535,208 | $3.92B | 0.25% | −239,013−0.8% | Reduced |
| Northern Trust Corp | 26,275,718 | $3.38B | 0.39% | −814,305−3.0% | Reduced |
| Goldman Sachs Group Inc | 22,075,139 | $2.84B | 0.30% | +1,941,760+9.6% | Added |
| Franklin Resources Inc | 19,548,585 | $2.51B | 0.54% | +3,281,380+20.2% | Added |
| UBS Asset Management Americas Inc | 19,547,171 | $2.51B | 0.46% | −867,648−4.3% | Reduced |
| Legal & General Group Plc | 18,873,343 | $2.43B | 0.51% | −665,202−3.4% | Reduced |
| Invesco Ltd. | 18,611,171 | $2.39B | 0.19% | −3,243,930−14.8% | Reduced |
| Price T Rowe Associates Inc | 18,518,796 | $2.38B | 0.24% | −4,524,046−19.6% | Reduced |
| Bank of New York Mellon Corp | 18,340,173 | $2.36B | 0.39% | −373,190−2.0% | Reduced |
| Dimensional Fund Advisors LP | 17,486,486 | $2.25B | 0.41% | +2,030,447+13.1% | Added |
| Ameriprise Financial Inc | 17,387,435 | $2.24B | 0.45% | +1,124,727+6.9% | Added |
| Capital International Investors | 15,386,689 | $1.98B | 0.41% | +14,516,428+1,668.1% | Added |
| Royal Bank of Canada | 14,293,086 | $1.84B | 0.31% | +1,091,364+8.3% | Added |
| Vanguard Fiduciary Trust Co | 13,869,309 | $1.78B | 0.39% | −94,870−0.7% | Reduced |
| State Farm Mutual Automobile Insurance Co | 13,794,969 | $1.77B | 1.21% | 00.0% | Unchanged |
| UBS Group AG | 13,744,783 | $1.77B | 0.28% | −188,847−1.4% | Reduced |
| Amundi | 12,342,274 | $1.59B | 0.38% | −1,422,680−10.3% | Reduced |
| Alliancebernstein L.P. | 13,131,942 | $1.58B | 0.56% | +1,830,456+16.2% | Added |
| Harris Associates L PSuperinvestorHarris Associates (Oakmark) | 12,073,109 | $1.55B | 2.06% | −293,824−2.4% | Reduced |
| Deutsche Bank AG | 11,964,180 | $1.54B | 0.45% | −576,594−4.6% | Reduced |
| Wells Fargo & Company | 11,658,434 | $1.50B | 0.26% | +211,589+1.8% | Added |
| Nuveen, LLC | 9,662,399 | $1.24B | 0.30% | −437,365−4.3% | Reduced |
| Stifel Financial Corp | 8,169,394 | $1.05B | 0.87% | −122,432−1.5% | Reduced |
| AQR Capital Management LLC | 8,134,262 | $1.04B | 0.36% | −494,224−5.7% | Reduced |
| HSBC Holdings PLC | 7,734,965 | $994.1M | 0.48% | +100,853+1.3% | Added |
| Barrow Hanley Mewhinney & Strauss LLC | 7,331,418 | $942.1M | 2.86% | −586,448−7.4% | Reduced |
| The PNC Financial Services Group, Inc. | 7,286,803 | $936.4M | 0.46% | −243,638−3.2% | Reduced |
| Swiss National Bank | 6,973,251 | $896.1M | 0.47% | −310,900−4.3% | Reduced |
| Barclays PLC | 6,793,897 | $873.0M | 0.28% | −763,621−10.1% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 6,785,008 | $871.9M | 1.96% | −228,769−3.3% | Reduced |
| Aristotle Capital Management, LLC | 6,578,570 | $845.4M | 1.77% | −315,862−4.6% | Reduced |
| Voya Investment Management LLC | 6,484,756 | $833.3M | 0.72% | +1,325,632+25.7% | Added |
| Swedbank AB | 6,360,649 | $817.3M | 0.70% | −731,062−10.3% | Reduced |
| Raymond James Financial Inc | 6,236,773 | $801.4M | 0.22% | −348,741−5.3% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 6,184,340 | $794.6M | 0.44% | +402,011+7.0% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 6,169,107 | $792.7M | 0.45% | −100,209−1.6% | Reduced |
| National Pension Service | 5,791,782 | $744.2M | 0.48% | +29,696+0.5% | Added |
| Vanguard Asset Management, Ltd | 5,593,255 | $718.7M | 0.49% | +589,632+11.8% | Added |
| Bank of Montreal | 5,565,728 | $715.2M | 0.26% | +734,567+15.2% | Added |
| Vanguard Global Advisers, LLC | 5,512,538 | $708.4M | 0.33% | −73,156−1.3% | Reduced |
| California Public Employees Retirement System | 5,398,744 | $693.7M | 0.39% | −1,984,344−26.9% | Reduced |
| LSV Asset Management | 5,299,408 | $681.0M | 1.24% | +210,699+4.1% | Added |
| DekaBank Deutsche Girozentrale | 5,427,912 | $638.7M | 1.08% | 00.0% | Unchanged |
| American Century Companies Inc | 4,865,967 | $625.3M | 0.28% | −681,891−12.3% | Reduced |
| Principal Financial Group Inc | 4,751,479 | $610.6M | 0.30% | +41,537+0.9% | Added |
| Capital Wealth Planning, LLC | 4,708,599 | $605.1M | 3.02% | +191,869+4.2% | Added |
| Caisse de Depot Et Placement du Quebec | 4,448,107 | $571.6M | 0.81% | +648,728+17.1% | Added |
| Standard Life Aberdeen plc | 4,309,756 | $553.8M | 0.78% | −355,437−7.6% | Reduced |
| Canada Pension Plan Investment Board | 4,176,604 | $536.7M | 0.30% | +559,734+15.5% | Added |
| Victory Capital Management Inc | 4,143,885 | $532.5M | 0.30% | +354,128+9.3% | Added |
| Envestnet Asset Management Inc | 3,996,890 | $513.6M | 0.12% | +143,914+3.7% | Added |
| Arrowstreet Capital, Limited Partnership | 3,966,523 | $509.7M | 0.23% | +1,030,193+35.1% | Added |
| Jupiter Topco LLC | 3,901,539 | $501.2M | 0.20% | +3,901,539 | New |
| Allianz Asset Management GmbH | 3,845,071 | $494.1M | 0.46% | −119,819−3.0% | Reduced |
| LPL Financial LLC | 3,836,733 | $493.0M | 0.11% | +54,545+1.4% | Added |
| Rhumbline Advisers | 3,809,518 | $489.5M | 0.37% | +12,088+0.3% | Added |
| Thornburg Investment Management Inc | 3,787,976 | $486.8M | 4.66% | +59,303+1.6% | Added |
| California State Teachers Retirement System | 3,772,142 | $484.7M | 0.44% | −63,470−1.7% | Reduced |
| Bank Julius Baer & Co. Ltd, Zurich | 3,729,950 | $480.3M | 1.24% | +29,728+0.8% | Added |
| Acadian Asset Management LLC | 3,695,329 | $474.8M | 0.56% | −507,052−12.1% | Reduced |
| HighTower Advisors, LLC | 3,679,920 | $472.9M | 0.45% | +44,516+1.2% | Added |
| Citigroup Inc | 3,614,905 | $464.5M | 0.22% | +835,799+30.1% | Added |
| Neuberger Berman Group LLC | 3,533,955 | $454.2M | 0.30% | +253,104+7.7% | Added |
| Nordea Investment Management AB | 3,503,750 | $445.1M | 0.36% | −5,024,243−58.9% | Reduced |
| Ensign Peak Advisors, Inc | 3,364,831 | $432.4M | 0.71% | +751,822+28.8% | Added |
| Aviva PLC | 3,264,106 | $419.4M | 0.62% | +27,533+0.9% | Added |
| BNP Paribas Arbitrage, SA | 3,130,937 | $402.3M | 0.21% | +924,704+41.9% | Added |
| SG Americas Securities, LLC | 3,072,242 | $394.8M | 0.23% | +1,406,722+84.5% | Added |
| Royal London Asset Management Ltd | 2,987,037 | $383.8M | 0.71% | +90,883+3.1% | Added |
| New York State Common Retirement Fund | 2,909,819 | $373.9M | 0.47% | −606,206−17.2% | Reduced |
| Natixis Advisors, L.P. | 2,857,628 | $367.2M | 0.41% | −112,662−3.8% | Reduced |
| Federated Hermes, Inc. | 2,852,266 | $366.5M | 0.53% | −155,830−5.2% | Reduced |
| Great West Life Assurance Co | 2,816,256 | $361.1M | 0.58% | −157,846−5.3% | Reduced |
| Mariner, LLC | 2,781,786 | $357.5M | 0.38% | −13,435−0.5% | Reduced |
| D. E. Shaw & Co., Inc. | 2,738,023 | $351.8M | 0.22% | −659,559−19.4% | Reduced |
| Jennison Associates LLC | 2,728,958 | $350.7M | 0.21% | −3,520,379−56.3% | Reduced |
| Assenagon Asset Management S.A. | 2,702,992 | $347.3M | 0.45% | +1,959,778+263.7% | Added |
| First Trust Advisors LP | 2,591,856 | $333.1M | 0.20% | −1,873,713−42.0% | Reduced |
| Russell Investments Group, Ltd. | 2,578,024 | $331.9M | 0.29% | +51,393+2.0% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 2,581,691 | $331.8M | 0.33% | +265,596+11.5% | Added |
| Jones Financial Companies LLLP | 2,548,737 | $327.9M | 0.13% | −110,644−4.2% | Reduced |
| Alyeska Investment Group, L.P. | 2,480,590 | $318.8M | 0.82% | +175,016+7.6% | Added |
| Schroder Investment Management Group | 2,455,664 | $315.6M | 0.22% | +699,417+39.8% | Added |
| National Bank of Canada | 2,433,801 | $312.7M | 0.27% | +472,411+24.1% | Added |
| Eurizon Capital SGR S.p.A. | 2,398,834 | $308.7M | 0.83% | −423,589−15.0% | Reduced |
| CI Private Wealth, LLC | 2,391,313 | $307.3M | 0.43% | −36,963−1.5% | Reduced |
| Robeco Institutional Asset Management B.V. | 2,373,993 | $305.1M | 0.37% | +51,700+2.2% | Added |
| Mackenzie Financial Corp | 2,373,431 | $305.0M | 0.31% | −144,004−5.7% | Reduced |