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, Q4 2025
Institutional positions in Merck & Co., Inc. as of Dec 31, 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
- 3,674
- +428 vs. Q3 2025
- Shares held
- 1.96B
- +60.6M (+3.2%) vs. Q3 2025
- Total value
- $206.6B
- +$47.2B (+29.6%) vs. Q3 2025
- New holders
- 555
- 1,379 more added
- Sold out
- 127
- 1,404 more reduced
73 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| CORDA Investment Management, LLC. | 437,074 | $46.0M | 3.35% | −3,209−0.7% | Reduced |
| PensionDanmark Pensionsforsikringsaktieselskab | 436,052 | $45.9M | 0.42% | +436,052 | New |
| Vontobel Holding Ltd. | 432,903 | $45.6M | 0.15% | +34,451+8.6% | Added |
| Kahn Brothers Group Inc | 430,103 | $45.3M | 8.02% | −3,647−0.8% | Reduced |
| Andra AP-fonden | 428,100 | $45.1M | 0.56% | −116,300−21.4% | Reduced |
| S&CO Inc | 425,531 | $44.8M | 2.78% | +3,000+0.7% | Added |
| Edmond de Rothschild Holding S.A. | 424,416 | $44.7M | 0.63% | +214,440+102.1% | Added |
| Fiduciary Trust Co | 423,896 | $44.6M | 0.51% | −8,147−1.9% | Reduced |
| Raiffeisen Bank International AG | 420,318 | $44.6M | 0.58% | −279,916−40.0% | Reduced |
| USS Investment Management Ltd | 423,037 | $44.5M | 0.22% | +279+0.1% | Added |
| Cambridge Investment Research Advisors, Inc. | 421,930 | $44.4M | 0.12% | +15,560+3.8% | Added |
| FengHe Fund Management Pte. Ltd. | 420,400 | $44.3M | 2.49% | +420,400 | New |
| QRG Capital Management, Inc. | 419,909 | $44.2M | 0.49% | +36,295+9.5% | Added |
| Cardinal Capital Management, Inc. | 304,534 | $44.0M | 0.99% | +10,659+3.6% | Added |
| Northwestern Mutual Wealth Management Co | 416,488 | $43.8M | 0.03% | +112,341+36.9% | Added |
| Utah Retirement Systems | 416,297 | $43.8M | 0.42% | +150.0% | Added |
| Vaughan David Investments LLC | 413,995 | $43.6M | 0.95% | +1,754+0.4% | Added |
| Xponance, Inc. | 413,211 | $43.5M | 0.33% | +2,066+0.5% | Added |
| MML Investors Services, LLC | 412,767 | $43.4M | 0.11% | +66,863+19.3% | Added |
| Systematic Alpha Investments, LLC | 410,682 | $43.2M | 1.35% | 00.0% | Unchanged |
| NEOS Investment Management LLC | 409,550 | $43.1M | 0.25% | +61,866+17.8% | Added |
| Varma Mutual Pension Insurance Co | 396,874 | $41.8M | 0.25% | −5,900−1.5% | Reduced |
| GWM Advisors LLC | 396,431 | $41.7M | 0.15% | +55,273+16.2% | Added |
| CIBC Private Wealth Group, LLC | 396,195 | $41.7M | 0.07% | +3,416+0.9% | Added |
| Police & Firemen's Retirement System of New Jersey | 386,353 | $40.7M | 0.34% | −19,902−4.9% | Reduced |
| JustInvest LLC | 385,886 | $40.6M | 0.40% | +66,115+20.7% | Added |
| AIA Group Ltd | 382,294 | $40.2M | 0.60% | −113,339−22.9% | Reduced |
| Prudential PLC | 380,476 | $40.0M | 0.32% | −29,087−7.1% | Reduced |
| Meyer Handelman Co | 378,287 | $39.8M | 1.25% | +1,114+0.3% | Added |
| La Banque Postale Asset Management SA | 377,424 | $39.7M | 0.46% | −108,415−22.3% | Reduced |
| Erste Asset Management GmbH | 370,971 | $39.5M | 0.33% | +124,202+50.3% | Added |
| Smith Chas P & Associates Pa Cpas | 370,936 | $39.0M | 2.05% | +142,409+62.3% | Added |
| Letko, Brosseau & Associates Inc | 370,534 | $39.0M | 0.64% | +16,545+4.7% | Added |
| M&G Plc | 371,267 | $39.0M | 0.20% | +8,280+2.3% | Added |
| Glenview Trust Co | 367,276 | $38.7M | 0.60% | −1230.0% | Reduced |
| Sector Gamma AS | 363,651 | $38.3M | 8.73% | +41,151+12.8% | Added |
| Capital Investment Advisors, LLC | 362,811 | $38.2M | 0.58% | −1,106−0.3% | Reduced |
| Edgar Lomax Co | 358,495 | $37.7M | 2.87% | −201,705−36.0% | Reduced |
| Sanctuary Advisors, LLC | 357,508 | $37.6M | 0.21% | +20,852+6.2% | Added |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 345,008 | $37.2M | 0.34% | −18,793−5.2% | Reduced |
| Conning Inc. | 352,977 | $37.2M | 1.24% | −48,082−12.0% | Reduced |
| Waters Parkerson & Co., LLC | 351,723 | $37.0M | 1.82% | +10,810+3.2% | Added |
| Commerzbank Aktiengesellschaft | 350,758 | $36.9M | 0.75% | +3,509+1.0% | Added |
| Spears Abacus Advisors LLC | 345,940 | $36.4M | 0.68% | +648+0.2% | Added |
| CIBC World Markets Corp | 345,813 | $36.4M | 0.18% | +345,813 | New |
| Stephens Inc | 342,140 | $36.2M | 0.45% | +27,257+8.7% | Added |
| Advisors Asset Management, Inc. | 342,689 | $36.1M | 0.61% | +2,380+0.7% | Added |
| New York Life Investment Management LLC | 340,288 | $35.8M | 0.31% | +1,127+0.3% | Added |
| Pinebridge Investments LLC | 337,483 | $35.5M | 0.26% | +337,483 | New |
| Union Bancaire Privee, UBP SA | 285,569 | $35.5M | 0.59% | −105,312−26.9% | Reduced |
| LGT Group Foundation | 334,436 | $35.5M | 0.39% | +3,196+1.0% | Added |
| Nissay Asset Management Corp | 332,835 | $35.0M | 0.18% | +2,186+0.7% | Added |
| Heritage Investors Management Corp | 331,872 | $34.9M | 1.02% | +2,211+0.7% | Added |
| Rakuten Investment Management, Inc. | 327,509 | $34.9M | 0.12% | +320,391+4,501.1% | Added |
| Northwest & Ethical Investments L.P. | 328,648 | $34.6M | 0.78% | +24,118+7.9% | Added |
| Vinva Investment Management Ltd | 325,944 | $34.6M | 0.43% | +89,400+37.8% | Added |
| CapWealth Advisors, LLC | 328,315 | $34.6M | 2.37% | +2,335+0.7% | Added |
| Pinnacle Financial Partners, Inc. | 325,833 | $34.3M | 0.26% | +325,833 | New |
| Martingale Asset Management L P | 323,799 | $34.1M | 0.87% | −36,028−10.0% | Reduced |
| MAI Capital Management | 323,491 | $34.1M | 0.20% | +32,752+11.3% | Added |
| Public Sector Pension Investment Board | 322,582 | $34.0M | 0.11% | −23,855−6.9% | Reduced |
| Welch & Forbes LLC | 322,229 | $33.9M | 0.41% | −4,524−1.4% | Reduced |
| Public Employees Retirement Association of Colorado | 321,557 | $33.8M | 0.12% | −1,226−0.4% | Reduced |
| Lido Advisors, LLC | 359,473 | $33.8M | 0.13% | +594+0.2% | Added |
| Ethic Inc. | 318,145 | $33.5M | 0.51% | +27,079+9.3% | Added |
| Exchange Traded Concepts, LLC | 314,728 | $33.1M | 0.28% | +219,579+230.8% | Added |
| Willis Investment Counsel | 313,718 | $33.0M | 1.71% | −990.0% | Reduced |
| Private Wealth Partners, LLC | 311,787 | $32.8M | 2.33% | −6,512−2.0% | Reduced |
| State of Alaska, Department of Revenue | 311,175 | $32.8M | 0.35% | +510+0.2% | Added |
| Bridgewater Associates, LP | 310,221 | $32.7M | 0.12% | −203,722−39.6% | Reduced |
| Adams Diversified Equity Fund, Inc. | 308,800 | $32.5M | 1.08% | 00.0% | Unchanged |
| Natixis | 308,772 | $32.5M | 0.13% | −560,550−64.5% | Reduced |
| Generali Asset Management SPA SGR | 308,173 | $32.4M | 0.66% | −32,367−9.5% | Reduced |
| Douglass Winthrop Advisors, LLC | 307,330 | $32.3M | 0.57% | −1,597−0.5% | Reduced |
| Hancock Whitney Corp | 307,300 | $32.3M | 0.58% | −8,035−2.5% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 306,497 | $32.3M | 0.05% | −387,401−55.8% | Reduced |
| Sequoia Financial Advisors, LLC | 306,143 | $32.2M | 0.18% | −5,422−1.7% | Reduced |
| Toroso Investments, LLC | 305,116 | $32.1M | 0.13% | −52,481−14.7% | Reduced |
| Elo Mutual Pension Insurance Co | 304,605 | $32.1M | 0.49% | +16,394+5.7% | Added |
| Gabelli Funds LLC | 304,065 | $32.0M | 0.22% | −21,375−6.6% | Reduced |
| Howard Capital Management Group, LLC | 303,032 | $31.9M | 2.02% | −7,928−2.5% | Reduced |
| Thompson Siegel & Walmsley LLC | 301,882 | $31.8M | 0.54% | −505−0.2% | Reduced |
| Steward Partners Investment Advisory, LLC | 299,942 | $31.6M | 0.17% | +40,456+15.6% | Added |
| Quintet Private Bank (Europe) S.A. | 299,144 | $31.5M | 1.83% | +8,714+3.0% | Added |
| ARGA Investment Management, LP | 297,409 | $31.3M | 0.85% | −919−0.3% | Reduced |
| GW&K Investment Management, LLC | 295,331 | $31.1M | 0.27% | +12,221+4.3% | Added |
| SRS Capital Advisors, Inc. | 293,929 | $30.9M | 0.90% | −135,358−31.5% | Reduced |
| Kestra Advisory Services, LLC | 292,038 | $30.7M | 0.13% | +14,114+5.1% | Added |
| Beacon Pointe Advisors, LLC | 290,400 | $30.6M | 0.21% | +6,187+2.2% | Added |
| Investment Management Corp of Ontario | 290,226 | $30.5M | 0.41% | −12,927−4.3% | Reduced |
| Avanza Fonder AB | 289,720 | $30.5M | 0.77% | +25,344+9.6% | Added |
| Wesbanco Bank Inc | 289,400 | $30.5M | 0.84% | −17,179−5.6% | Reduced |
| Bradley Foster & Sargent Inc | 288,984 | $30.4M | 0.45% | −1,351−0.5% | Reduced |
| Becker Capital Management Inc | 285,455 | $30.3M | 0.87% | −10,972−3.7% | Reduced |
| Private Advisor Group, LLC | 285,130 | $30.0M | 0.14% | −14,718−4.9% | Reduced |
| Oregon Public Employees Retirement Fund | 284,228 | $29.9M | 0.38% | −1,337−0.5% | Reduced |
| TD Waterhouse Canada Inc. | 282,910 | $29.8M | 0.19% | +30,001+11.9% | Added |
| Shelton Capital Management | 279,686 | $29.4M | 0.58% | +91,910+48.9% | Added |
| Haverford Trust Co | 279,635 | $29.4M | 0.26% | −10,004−3.5% | Reduced |
| Tiaa Trust, National Association | 278,658 | $29.3M | 0.07% | +130,701+88.3% | Added |