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
- 3,319
- +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 | 3,855 | $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 |
|---|---|---|---|---|---|
| ING Groep NV | 855,931 | $71.8M | 0.39% | +79,001+10.2% | Added |
| Mediolanum International Funds Ltd | 897,288 | $70.5M | 0.74% | +246,759+37.9% | Added |
| Keybank National Association | 836,940 | $70.2M | 0.25% | −28,640−3.3% | Reduced |
| Groupama Asset Managment | 832,605 | $69.9M | 1.02% | +49,541+6.3% | Added |
| Forsta Ap-Fonden | 831,800 | $69.8M | 0.41% | +38,500+4.9% | Added |
| FIL Ltd | 824,241 | $69.2M | 0.05% | +150,667+22.4% | Added |
| Blair William & Co | 812,366 | $68.2M | 0.18% | −60,101−6.9% | Reduced |
| Jones Financial Companies LLLP | 838,536 | $66.5M | 0.05% | −15,360−1.8% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 791,735 | $66.5M | 1.05% | −9,018−1.1% | Reduced |
| Banque Pictet & Cie SA | 788,353 | $66.2M | 0.66% | −246,821−23.8% | Reduced |
| Tudor Investment Corp Et Al | 787,366 | $66.1M | 0.43% | +787,366 | New |
| Donaldson Capital Management, LLC | 786,883 | $66.0M | 2.09% | +313,652+66.3% | Added |
| Compass Capital Management, Inc | 786,868 | $66.0M | 3.49% | +32,011+4.2% | Added |
| Ieq Capital, LLC | 786,169 | $66.0M | 0.20% | +229,758+41.3% | Added |
| J. Safra Sarasin Holding AG | 771,964 | $64.8M | 1.05% | −9,352−1.2% | Reduced |
| MUFG Securities EMEA plc | 768,809 | $64.5M | 1.62% | +761,389+10,261.3% | Added |
| Millennium Management LLC | 763,368 | $64.1M | 0.05% | −226,426−22.9% | Reduced |
| Midwest Trust Co | 759,124 | $63.7M | 0.83% | +24,910+3.4% | Added |
| DnB Asset Management AS | 748,427 | $62.8M | 0.23% | −5,667−0.8% | Reduced |
| Ferguson Wellman Capital Management, Inc | 747,581 | $62.7M | 1.02% | −7,307−1.0% | Reduced |
| Harvest Portfolios Group Inc. | 745,829 | $62.6M | 1.15% | +57,528+8.4% | Added |
| State of Michigan Retirement System | 737,790 | $61.9M | 0.30% | −7,300−1.0% | Reduced |
| Arizona State Retirement System | 733,588 | $61.6M | 0.33% | −2,061−0.3% | Reduced |
| First Financial Bankshares Inc | 721,010 | $60.5M | 1.24% | +13,189+1.9% | Added |
| Commerce Bank | 718,072 | $60.3M | 0.34% | −12,864−1.8% | Reduced |
| Mercer Global Advisors Inc | 716,051 | $60.1M | 0.10% | +101,040+16.4% | Added |
| Guggenheim Capital LLC | 713,993 | $59.9M | 0.44% | +100,798+16.4% | Added |
| Old Republic International Corporation | 705,600 | $59.2M | 2.20% | 00.0% | Unchanged |
| Boston Partners | 702,882 | $59.0M | 0.06% | −61,111−8.0% | Reduced |
| Epoch Investment Partners, Inc. | 693,112 | $58.2M | 0.32% | −27,546−3.8% | Reduced |
| Compagnie Lombard Odier SCmA | 692,904 | $58.2M | 0.64% | −1,405−0.2% | Reduced |
| Nisa Investment Advisors, LLC | 683,912 | $58.0M | 0.22% | −125,886−15.5% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 693,898 | $57.9M | 0.09% | +12,770+1.9% | Added |
| Voya Investment Management LLC | 685,693 | $57.6M | 0.06% | −114,584−14.3% | Reduced |
| Balyasny Asset Management LLC | 684,957 | $57.5M | 0.12% | +669,324+4,281.5% | Added |
| Raiffeisen Bank International AG | 700,234 | $55.0M | 0.73% | −18,759−2.6% | Reduced |
| 1832 Asset Management L.P. | 653,405 | $54.8M | 0.09% | +99,621+18.0% | Added |
| Jane Street Group, LLC | 651,084 | $54.6M | 0.06% | +642,719+7,683.4% | Added |
| AustralianSuper Pty Ltd | 648,251 | $54.4M | 0.26% | −85,502−11.7% | Reduced |
| Holocene Advisors, LP | 646,011 | $54.2M | 0.12% | +646,011 | New |
| Allspring Global Investments Holdings, LLC | 595,539 | $53.7M | 0.09% | +147,220+32.8% | Added |
| Czech National Bank | 634,385 | $53.2M | 0.37% | +20,600+3.4% | Added |
| Tredje AP-fonden | 631,065 | $53.0M | 0.43% | +55,902+9.7% | Added |
| Ofi Invest Asset Management | 733,819 | $52.4M | 1.10% | +17,761+2.5% | Added |
| Intech Investment Management LLC | 621,810 | $52.2M | 0.47% | −412,916−39.9% | Reduced |
| Quantinno Capital Management LP | 620,499 | $52.1M | 0.14% | +215,559+53.2% | Added |
| MetLife Investment Management | 620,110 | $52.0M | 0.25% | −19,855−3.1% | Reduced |
| Heritage Wealth Advisors | 614,097 | $51.5M | 2.26% | +24,697+4.2% | Added |
| Fort Washington Investment Advisors Inc | 612,688 | $51.4M | 0.28% | +72,407+13.4% | Added |
| Kempen Capital Management N.V. | 606,735 | $50.9M | 0.45% | +27,831+4.8% | Added |
| Cacti Asset Management LLC | 644,798 | $50.7M | 3.43% | +500+0.1% | Added |
| Empowered Funds, LLC | 602,792 | $50.6M | 0.51% | +129,923+27.5% | Added |
| Fifth Third Bancorp | 600,532 | $50.4M | 0.16% | −22,445−3.6% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 599,809 | $50.3M | 0.25% | −16,035−2.6% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 595,441 | $50.0M | 0.40% | +10,440+1.8% | Added |
| Gotham Asset Management, LLC | 592,307 | $49.7M | 0.22% | +113,226+23.6% | Added |
| ProShare Advisors LLC | 583,766 | $49.0M | 0.10% | −27,967−4.6% | Reduced |
| Rockland Trust Co | 580,339 | $48.7M | 2.00% | +30,061+5.5% | Added |
| Whittier Trust Co | 539,409 | $48.1M | 0.55% | +696+0.1% | Added |
| DJE Kapital AG | 608,720 | $48.1M | 1.17% | 00.0% | Unchanged |
| Peapack Gladstone Financial Corp | 565,881 | $47.5M | 0.62% | −32,701−5.5% | Reduced |
| Daiwa Securities Group Inc. | 565,237 | $47.4M | 0.16% | +8,257+1.5% | Added |
| Edgar Lomax Co | 560,200 | $47.0M | 3.68% | −164,405−22.7% | Reduced |
| Distillate Capital Partners LLC | 557,983 | $46.8M | 2.43% | −7,370−1.3% | Reduced |
| Perpetual Ltd | 554,455 | $46.5M | 0.58% | −269,658−32.7% | Reduced |
| Oppenheimer Asset Management Inc. | 553,998 | $46.5M | 0.51% | +32,959+6.3% | Added |
| D.A. Davidson & Co. | 552,383 | $46.4M | 0.30% | +6,467+1.2% | Added |
| Illinois Municipal Retirement Fund | 548,945 | $46.1M | 0.59% | +4,568+0.8% | Added |
| Tocqueville Asset Management L.P. | 547,200 | $45.9M | 0.67% | −123,158−18.4% | Reduced |
| Aquatic Capital Management LLC | 545,395 | $45.8M | 0.85% | +291,559+114.9% | Added |
| Kornitzer Capital Management Inc | 545,054 | $45.7M | 0.92% | +6,788+1.3% | Added |
| Andra AP-fonden | 544,400 | $45.7M | 0.58% | −17,200−3.1% | Reduced |
| Glenmede Investment Management, LP | 539,875 | $45.3M | 0.22% | −89,706−14.2% | Reduced |
| Douglas Lane & Associates, LLC | 539,350 | $45.3M | 0.63% | +19,449+3.7% | Added |
| Gateway Investment Advisers LLC | 536,474 | $45.0M | 0.44% | +2,840+0.5% | Added |
| Capital Fund Management S.A. | 533,350 | $44.8M | 0.45% | −420,203−44.1% | Reduced |
| Retirement Systems of Alabama | 532,822 | $44.7M | 0.15% | −5,995−1.1% | Reduced |
| Radnor Capital Management, LLC | 521,049 | $43.7M | 6.65% | −1,659−0.3% | Reduced |
| Sanibel Captiva Trust Company, Inc. | 520,181 | $43.7M | 1.24% | +400.0% | Added |
| Banco Bilbao Vizcaya Argentaria, S.A. | 519,889 | $43.5M | 0.33% | +44,028+9.3% | Added |
| Bridgewater Associates, LP | 513,943 | $43.1M | 0.17% | −636,779−55.3% | Reduced |
| Calamos Advisors LLC | 510,200 | $42.8M | 0.17% | −130.0% | Reduced |
| RNC Capital Management LLC | 504,850 | $42.4M | 1.95% | +133,326+35.9% | Added |
| Aristotle Atlantic Partners, LLC | 496,610 | $41.7M | 1.21% | 00.0% | Unchanged |
| AIA Group Ltd | 495,633 | $41.6M | 0.74% | −185,881−27.3% | Reduced |
| TCW Group Inc | 494,085 | $41.5M | 0.35% | +255,607+107.2% | Added |
| Benjamin Edwards Inc | 493,935 | $41.5M | 0.47% | +19,680+4.1% | Added |
| Federation des caisses Desjardins du Quebec | 491,480 | $41.2M | 0.16% | +64,796+15.2% | Added |
| La Banque Postale Asset Management SA | 485,839 | $40.8M | 0.50% | +149,928+44.6% | Added |
| Boston Trust Walden Corp | 480,181 | $40.3M | 0.30% | −160,552−25.1% | Reduced |
| IFM Investors Pty Ltd | 509,374 | $40.0M | 0.35% | +4,909+1.0% | Added |
| CIBC Asset Management Inc | 475,299 | $39.9M | 0.12% | +3,968+0.8% | Added |
| Amalgamated Bank | 475,288 | $39.9M | 0.29% | −9,994−2.1% | Reduced |
| SRB Corp | 473,365 | $39.7M | 2.28% | −23,181−4.7% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 470,436 | $39.5M | 0.25% | +22,358+5.0% | Added |
| Pathstone Holdings, LLC | 465,592 | $39.1M | 0.15% | +2,966+0.6% | Added |
| Cubist Systematic Strategies, LLC | 458,259 | $38.5M | 0.54% | +453,859+10,315.0% | Added |
| Nichols & Pratt Advisers LLP | 454,832 | $38.2M | 2.41% | +6,081+1.4% | Added |
| Fukoku Mutual Life Insurance Co | 448,059 | $37.6M | 2.32% | −11,738−2.6% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 447,210 | $37.5M | 0.33% | −1,088−0.2% | Reduced |