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, Q2 2025
Institutional positions in Merck & Co., Inc. as of Jun 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
- 3,337
- −73 vs. Q1 2025
- Shares held
- 1.97B
- −5.75M (−0.3%) vs. Q1 2025
- Total value
- $155.9B
- −$21.3B (−12.0%) vs. Q1 2025
- New holders
- 178
- 1,301 more added
- Sold out
- 251
- 1,539 more reduced
49 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wiley Bros.-Aintree Capital, LLC | 448,078 | $35.5M | 0.27% | −53,701−10.7% | Reduced |
| Weiss Asset Management LP | 447,390 | $35.4M | 0.56% | +447,390 | New |
| Worldquant Millennium Advisors LLC | 446,356 | $35.3M | 0.18% | −1,420,189−76.1% | Reduced |
| Pinnacle Associates Ltd | 442,824 | $35.1M | 0.51% | −549−0.1% | Reduced |
| Ilmarinen Mutual Pension Insurance Co | 433,000 | $34.3M | 0.28% | +30,000+7.4% | Added |
| CORDA Investment Management, LLC. | 432,038 | $34.2M | 2.52% | +21,675+5.3% | Added |
| Xponance, Inc. | 430,831 | $34.1M | 0.28% | −195,665−31.2% | Reduced |
| Fiduciary Trust Co | 429,269 | $34.0M | 0.42% | −19,910−4.4% | Reduced |
| Federation des caisses Desjardins du Quebec | 426,684 | $33.8M | 0.15% | +81,867+23.7% | Added |
| S&CO Inc | 425,871 | $33.7M | 2.16% | −712−0.2% | Reduced |
| USS Investment Management Ltd | 422,758 | $33.4M | 0.21% | +5,036+1.2% | Added |
| Utah Retirement Systems | 417,202 | $33.0M | 0.34% | −2,942−0.7% | Reduced |
| Systematic Alpha Investments, LLC | 410,682 | $32.5M | 1.15% | 00.0% | Unchanged |
| CIBC Private Wealth Group, LLC | 408,873 | $32.4M | 0.06% | −604,959−59.7% | Reduced |
| Quantinno Capital Management LP | 404,940 | $32.1M | 0.14% | +76,495+23.3% | Added |
| Vaughan David Investments LLC | 403,577 | $31.9M | 0.71% | +11,898+3.0% | Added |
| LGT Group Foundation | 403,468 | $31.9M | 0.40% | +9,870+2.5% | Added |
| Prudential PLC | 398,170 | $31.5M | 0.19% | +56,360+16.5% | Added |
| British Columbia Investment Management Corp | 396,445 | $31.4M | 0.18% | −87,325−18.1% | Reduced |
| RMB Capital Management, LLC | 392,788 | $31.3M | 0.59% | +65,987+20.2% | Added |
| Martingale Asset Management L P | 389,127 | $30.8M | 0.76% | +62,249+19.0% | Added |
| Union Bancaire Privee, UBP SA | 367,101 | $30.5M | 0.51% | +280,275+322.8% | Added |
| Police & Firemen's Retirement System of New Jersey | 382,594 | $30.3M | 0.28% | +13,126+3.6% | Added |
| Vontobel Holding Ltd. | 382,066 | $30.2M | 0.10% | +37,364+10.8% | Added |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 379,060 | $30.0M | 0.27% | −14,614−3.7% | Reduced |
| Banco Santander, S.A. | 371,531 | $29.4M | 0.28% | +54,618+17.2% | Added |
| RNC Capital Management LLC | 371,524 | $29.4M | 1.43% | −22,163−5.6% | Reduced |
| Meyer Handelman Co | 371,148 | $29.4M | 0.97% | +926+0.3% | Added |
| Glenview Trust Co | 369,889 | $29.3M | 0.51% | −1,637−0.4% | Reduced |
| Varma Mutual Pension Insurance Co | 369,674 | $29.3M | 0.22% | −12,400−3.2% | Reduced |
| GWM Advisors LLC | 366,389 | $29.0M | 0.15% | −39,977−9.8% | Reduced |
| Erste Asset Management GmbH | 362,147 | $28.6M | 0.24% | +123,154+51.5% | Added |
| CIBC World Markets Corp | 359,218 | $28.4M | 0.19% | +10,794+3.1% | Added |
| Smith Chas P & Associates Pa Cpas | 355,248 | $28.1M | 1.58% | +14,013+4.1% | Added |
| Wesbanco Bank Inc | 351,604 | $27.8M | 0.83% | −4,855−1.4% | Reduced |
| Capital Investment Advisors, LLC | 349,905 | $27.7M | 0.50% | +12,958+3.8% | Added |
| Letko, Brosseau & Associates Inc | 347,289 | $27.5M | 0.53% | +106,380+44.2% | Added |
| New York Life Investment Management LLC | 345,823 | $27.4M | 0.26% | +4,031+1.2% | Added |
| Sanctuary Advisors, LLC | 340,662 | $27.0M | 0.17% | −47,329−12.2% | Reduced |
| Nissay Asset Management Corp | 337,781 | $26.7M | 0.16% | +10,841+3.3% | Added |
| Toroso Investments, LLC | 337,536 | $26.7M | 0.17% | +23,314+7.4% | Added |
| Spears Abacus Advisors LLC | 337,358 | $26.7M | 0.54% | +2,301+0.7% | Added |
| Alps Advisors Inc | 335,927 | $26.6M | 0.15% | −1,674−0.5% | Reduced |
| La Banque Postale Asset Management SA | 335,911 | $26.6M | 0.37% | −8,513−2.5% | Reduced |
| Waters Parkerson & Co., LLC | 333,082 | $26.4M | 1.32% | +12,665+4.0% | Added |
| MML Investors Services, LLC | 332,019 | $26.3M | 0.08% | −170,554−33.9% | Reduced |
| Welch & Forbes LLC | 331,608 | $26.3M | 0.33% | −5,950−1.8% | Reduced |
| Public Employees Retirement Association of Colorado | 329,891 | $26.1M | 0.10% | −1,282,446−79.5% | Reduced |
| Heritage Investors Management Corp | 328,920 | $26.0M | 0.82% | +8,073+2.5% | Added |
| State of Alaska, Department of Revenue | 327,444 | $25.9M | 0.28% | −14,645−4.3% | Reduced |
| Hancock Whitney Corp | 327,036 | $25.9M | 0.49% | +291,063+809.1% | Added |
| Gabelli Funds LLC | 326,115 | $25.8M | 0.18% | −23,500−6.7% | Reduced |
| CapWealth Advisors, LLC | 325,526 | $25.8M | 2.54% | +95,162+41.3% | Added |
| JustInvest LLC | 322,630 | $25.6M | 0.29% | +26,484+8.9% | Added |
| Steward Partners Investment Advisory, LLC | 317,405 | $25.1M | 0.20% | −174,112−35.4% | Reduced |
| Private Wealth Partners, LLC | 316,764 | $25.1M | 1.96% | −13,723−4.2% | Reduced |
| O'Shaughnessy Asset Management, LLC | 314,139 | $24.9M | 0.17% | +36,826+13.3% | Added |
| Howard Capital Management Group, LLC | 311,309 | $24.6M | 1.71% | +14,126+4.8% | Added |
| Haverford Trust Co | 309,256 | $24.5M | 0.23% | −244,933−44.2% | Reduced |
| Stephens Inc | 307,789 | $24.4M | 0.33% | −18,575−5.7% | Reduced |
| Becker Capital Management Inc | 303,925 | $24.3M | 0.76% | −4,218−1.4% | Reduced |
| Bradley Foster & Sargent Inc | 303,980 | $24.1M | 0.38% | −16,887−5.3% | Reduced |
| Private Advisor Group, LLC | 303,396 | $24.0M | 0.13% | −1,640−0.5% | Reduced |
| Northwest & Ethical Investments L.P. | 302,560 | $24.0M | 0.59% | −73,132−19.5% | Reduced |
| Ethic Inc. | 300,648 | $23.8M | 0.43% | +8,003+2.7% | Added |
| Northwestern Mutual Wealth Management Co | 300,352 | $23.8M | 0.02% | −14,140−4.5% | Reduced |
| GW&K Investment Management, LLC | 300,280 | $23.8M | 0.21% | −4,321−1.4% | Reduced |
| Aware Super Pty Ltd as trustee of Aware Super | 299,433 | $23.7M | 0.35% | +156,788+109.9% | Added |
| Sequoia Financial Advisors, LLC | 299,098 | $23.7M | 0.16% | +18,652+6.7% | Added |
| Highland Capital Management, LLC | 297,656 | $23.6M | 1.27% | +10,000+3.5% | Added |
| Advisors Asset Management, Inc. | 296,789 | $23.5M | 0.42% | +9,009+3.1% | Added |
| Bridgeway Capital Management, LLC | 292,184 | $23.1M | 0.55% | +45,671+18.5% | Added |
| Horizon Investments, LLC | 291,494 | $23.1M | 0.37% | +256,061+722.7% | Added |
| Mutual of America Capital Management LLC | 287,539 | $22.8M | 0.25% | −6,207−2.1% | Reduced |
| Vestcor Inc | 286,103 | $22.6M | 0.68% | −10,675−3.6% | Reduced |
| Beacon Pointe Advisors, LLC | 285,720 | $22.6M | 0.24% | +7,369+2.6% | Added |
| Thompson Siegel & Walmsley LLC | 285,310 | $22.6M | 0.38% | +12,888+4.7% | Added |
| Douglass Winthrop Advisors, LLC | 283,590 | $22.4M | 0.41% | −12,143−4.1% | Reduced |
| SRS Capital Advisors, Inc. | 283,142 | $22.4M | 1.05% | +270,881+2,209.3% | Added |
| Citizens Financial Group Inc | 281,090 | $22.3M | 0.36% | −39,355−12.3% | Reduced |
| Factory Mutual Insurance Co | 281,024 | $22.2M | 0.24% | −206,756−42.4% | Reduced |
| Bryn Mawr Trust Co | 280,292 | $22.2M | 0.39% | −13,849−4.7% | Reduced |
| Yousif Capital Management, LLC | 277,645 | $22.0M | 0.24% | −2,604−0.9% | Reduced |
| ASR Vermogensbeheer N.V. | 277,356 | $22.0M | 0.28% | −449−0.2% | Reduced |
| Congress Wealth Management LLC | 274,803 | $21.8M | 0.21% | −19,741−6.7% | Reduced |
| Huntington National Bank | 271,418 | $21.5M | 0.14% | −19,474−6.7% | Reduced |
| Eastern Bank | 271,365 | $21.5M | 0.41% | −12,160−4.3% | Reduced |
| Saudi Central Bank | 268,432 | $21.5M | 0.88% | +267,437+26,878.1% | Added |
| Kestra Advisory Services, LLC | 271,088 | $21.5M | 0.10% | −34,699−11.3% | Reduced |
| Omers Administration Corp | 270,845 | $21.4M | 0.17% | +13,764+5.4% | Added |
| Whittier Trust Co of Nevada Inc | 270,155 | $21.4M | 0.48% | +6,322+2.4% | Added |
| OP Asset Management Ltd | 269,869 | $21.4M | 0.31% | +2,295+0.9% | Added |
| Boston Common Asset Management, LLC | 269,727 | $21.4M | 0.60% | −30,618−10.2% | Reduced |
| Cardinal Capital Management, Inc. | 269,671 | $21.3M | 0.67% | +3,065+1.1% | Added |
| Rafferty Asset Management, LLC | 268,382 | $21.2M | 0.07% | +30,670+12.9% | Added |
| Transcend Wealth Collective, LLC | 268,371 | $21.2M | 1.65% | −6,261−2.3% | Reduced |
| Avantax Advisory Services, Inc. | 264,814 | $21.0M | 0.12% | +34,861+15.2% | Added |
| Silvercrest Asset Management Group LLC | 263,734 | $20.9M | 0.14% | −398−0.2% | Reduced |
| Quintet Private Bank (Europe) S.A. | 263,690 | $20.9M | 1.21% | −26,866−9.2% | Reduced |
| Wilkins Investment Counsel Inc | 263,576 | $20.9M | 2.95% | +11,019+4.4% | Added |