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 | 3,812 | $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 | 3,501 | $221.8B |
| Q2 2024 | 3,557 | $242.3B |
| Q1 2024 | 3,546 | $256.9B |
| Q4 2023 | 3,443 | $211.6B |
| Q3 2023 | 3,221 | $197.7B |
| Q2 2023 | 3,261 | $222.8B |
| Q1 2023 | 3,187 | $205.1B |
| Q4 2022 | 3,243 | $212.2B |
| Q3 2022 | 2,996 | $162.7B |
| Q2 2022 | 3,019 | $171.5B |
| Q1 2022 | 2,961 | $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 |
|---|---|---|---|---|---|
| Capstone Financial Advisors, Inc. | 8,863 | $932.9K | 0.05% | −150−1.7% | Reduced |
| Pettee Investors, Inc. | 8,873 | $934.0K | 0.52% | +157+1.8% | Added |
| Graham Capital Management, L.P. | 8,887 | $935.4K | 0.03% | −6,124−40.8% | Reduced |
| Washington Trust Advisors, Inc. | 8,893 | $936.0K | 0.07% | −50−0.6% | Reduced |
| KPP Advisory Services LLC | 8,903 | $937.1K | 0.14% | −451−4.8% | Reduced |
| Foster Dykema Cabot & Partners, LLC | 8,860 | $940.3K | 0.06% | −1,337−13.1% | Reduced |
| LBMC Investment Advisors, LLC | 8,940 | $941.0K | 0.06% | −120−1.3% | Reduced |
| Aurora Private Wealth, Inc. | 8,961 | $943.0K | 0.62% | +8,961 | New |
| Quotient Wealth Partners, LLC | 8,985 | $945.7K | 0.03% | −452−4.8% | Reduced |
| West Michigan Advisors, LLC | 8,929 | $947.2K | 0.22% | +1,477+19.8% | Added |
| Adirondack Trust Co | 9,014 | $948.8K | 0.31% | −596−6.2% | Reduced |
| Sara-Bay Financial | 8,946 | $948.8K | 0.28% | −338−3.6% | Reduced |
| Murphy & Mullick Capital Management Corp | 9,014 | $948.8K | 0.68% | +236+2.7% | Added |
| SGL Investment Advisors, Inc. | 7,926 | $949.1K | 0.38% | −664−7.7% | Reduced |
| Peddock Capital Advisors, LLC | 9,029 | $950.4K | 0.20% | 00.0% | Unchanged |
| Bank of New Hampshire | 9,033 | $950.8K | 0.21% | +275+3.1% | Added |
| Legal Advantage Investments, Inc. | 9,040 | $951.5K | 0.44% | 00.0% | Unchanged |
| Mendel Money Management | 9,050 | $952.6K | 0.40% | +347+4.0% | Added |
| Larry Mathis Financial Planning, LLC | 9,052 | $952.8K | 0.84% | +9,052 | New |
| Carnegie Lake Advisors LLC | 9,064 | $954.1K | 0.36% | +232+2.6% | Added |
| First National Bank of Mount Dora, Trust Investment Services | 9,073 | $955.0K | 0.21% | −132−1.4% | Reduced |
| Continuum Advisory, LLC | 9,074 | $955.1K | 0.10% | +1,145+14.4% | Added |
| Rogco, LP | 9,078 | $955.5K | 0.32% | −38−0.4% | Reduced |
| Net Worth Advisory Group | 9,087 | $956.5K | 0.19% | +3,507+62.8% | Added |
| Autumn Glory Partners, LLC | 9,100 | $957.9K | 0.34% | +1,338+17.2% | Added |
| 71 West Capital Partners | 9,108 | $958.7K | 0.04% | +9,108 | New |
| Gilbert & Cook, Inc. | 9,109 | $958.8K | 0.12% | +407+4.7% | Added |
| Burford Brothers, Inc. | 9,196 | $967.9K | 0.40% | +9,196 | New |
| Connecticut Wealth Management, LLC | 9,214 | $969.9K | 0.04% | +115+1.3% | Added |
| Maple Capital Management, Inc. | 9,218 | $970.3K | 0.06% | +354+4.0% | Added |
| Patriot Investment Management Inc. | 9,227 | $971.2K | 0.06% | −718−7.2% | Reduced |
| Xxi Wealth, LLC | 9,240 | $972.6K | 0.59% | +9,240 | New |
| Alliance Wealth Management Group | 9,246 | $973.2K | 0.21% | +45+0.5% | Added |
| Towercrest Capital Management | 9,246 | $973.2K | 0.15% | +45+0.5% | Added |
| Spirit of America Management Corp | 9,250 | $973.7K | 0.21% | −700−7.0% | Reduced |
| B&L Asset Management LLC | 9,250 | $973.7K | 0.44% | +2,453+36.1% | Added |
| Oxford Wealth Group, LLC | 9,267 | $975.4K | 0.47% | +9,267 | New |
| Frisch Financial Group, Inc. | 9,199 | $976.1K | 0.22% | −356−3.7% | Reduced |
| BridgePort Financial Solutions, LLC | 9,274 | $976.2K | 0.26% | −163−1.7% | Reduced |
| Shore Point Advisors, LLC | 9,297 | $978.6K | 0.41% | 00.0% | Unchanged |
| MSH Capital Advisors LLC | 9,306 | $979.5K | 0.21% | +2,350+33.8% | Added |
| Gratus Wealth Advisors, LLC | 9,317 | $980.7K | 0.14% | −1,121−10.7% | Reduced |
| Investors Research Corp | 9,325 | $981.5K | 0.18% | 00.0% | Unchanged |
| Trustco Bank Corp N Y | 9,331 | $982.2K | 0.89% | +200+2.2% | Added |
| Blodgett Wealth Advisors, LLC | 9,331 | $982.2K | 0.69% | +10.0% | Added |
| Formidable Asset Management, LLC | 11,733 | $984.8K | 0.14% | −1,634−12.2% | Reduced |
| Farmers National Bank | 9,396 | $989.0K | 0.22% | −195−2.0% | Reduced |
| Coston, McIsaac & Partners | 9,421 | $991.0K | 0.23% | −438−4.4% | Reduced |
| Paulson Wealth Management Inc. | 9,464 | $996.2K | 0.23% | −261−2.7% | Reduced |
| Caldwell Sutter Capital, Inc. | 9,469 | $996.7K | 0.42% | +211+2.3% | Added |
| Magnus Financial Group LLC | 9,483 | $998.2K | 0.08% | +1,704+21.9% | Added |
| Sittner & Nelson, LLC | 8,212 | $1.00M | 0.35% | +1,570+23.6% | Added |
| Corundum Group, Inc. | 9,557 | $1.01M | 0.34% | −187−1.9% | Reduced |
| Venturi Wealth Management, LLC | 9,558 | $1.01M | 0.04% | +960+11.2% | Added |
| Institute for Wealth Management, LLC. | 9,566 | $1.01M | 0.11% | +642+7.2% | Added |
| Fielder Capital Group LLC | 9,567 | $1.01M | 0.21% | +5,641+143.7% | Added |
| Round Rock Advisors, LLC | 9,579 | $1.01M | 0.15% | −21−0.2% | Reduced |
| Alta Advisers Ltd | 9,584 | $1.01M | 0.37% | −3,000−23.8% | Reduced |
| Taylor Hoffman Capital Management LLC | 9,585 | $1.01M | 0.31% | −800−7.7% | Reduced |
| Barr E S & Co | 9,586 | $1.01M | 0.05% | +5,523+135.9% | Added |
| Plan Group Financial, LLC | 9,590 | $1.01M | 0.26% | +885+10.2% | Added |
| CoreFirst Bank & Trust | 9,599 | $1.01M | 0.55% | −499−4.9% | Reduced |
| Clear Creek Financial Management, LLC | 9,607 | $1.01M | 0.08% | +893+10.2% | Added |
| ADAR1 Capital Management, LLC | 9,640 | $1.01M | 0.08% | −8,900−48.0% | Reduced |
| SNS Financial Group, LLC | 9,566 | $1.02M | 0.09% | +407+4.4% | Added |
| Lederer & Associates Investment Counsel | 9,664 | $1.02M | 0.68% | −69−0.7% | Reduced |
| Storgate, LLC | 9,673 | $1.02M | 0.84% | +9,673 | New |
| Mirabaud Asset Management Ltd | 11,768 | $1.02M | 0.49% | −1,602−12.0% | Reduced |
| Crewe Advisors LLC | 9,684 | $1.02M | 0.09% | +57+0.6% | Added |
| Lafayette Investments, Inc. | 9,686 | $1.02M | 0.19% | −48−0.5% | Reduced |
| Jackson Square Capital, LLC | 9,701 | $1.02M | 0.20% | +9,701 | New |
| Acorn Financial Advisory Services Inc | 9,702 | $1.02M | 0.15% | −299−3.0% | Reduced |
| Empirical Asset Management, LLC | 12,481 | $1.02M | 0.29% | −222−1.7% | Reduced |
| Asahi Life Asset Management Co., Ltd. | 9,720 | $1.02M | 0.57% | −8,540−46.8% | Reduced |
| Lighthouse Financial Services Inc | 9,728 | $1.02M | 0.24% | +9,728 | New |
| Pinnacle West Asset Management, Inc. | 9,745 | $1.03M | 0.67% | +100+1.0% | Added |
| Coco Enterprises, LLC | 9,751 | $1.03M | 0.52% | −198−2.0% | Reduced |
| Guardian Wealth Advisors, LLC | 9,806 | $1.03M | 0.06% | −154−1.5% | Reduced |
| Saxon Interests, Inc. | 9,813 | $1.03M | 0.37% | −2,019−17.1% | Reduced |
| LFG Wealth Partners, LLC | 9,813 | $1.03M | 0.66% | +9,813 | New |
| Wealth Effects LLC | 9,814 | $1.03M | 0.32% | −700−6.7% | Reduced |
| Summit Financial Wealth Advisors, LLC | 9,863 | $1.04M | 0.15% | −161−1.6% | Reduced |
| Kentucky Trust Co | 9,864 | $1.04M | 0.55% | −50−0.5% | Reduced |
| Baxter Bros Inc | 9,867 | $1.04M | 0.12% | −60−0.6% | Reduced |
| Compass Capital Corp | 8,896 | $1.04M | 0.40% | +376+4.4% | Added |
| GeoWealth Management, LLC | 9,917 | $1.04M | 0.04% | +356+3.7% | Added |
| Guerra Pan Advisors, LLC | 9,926 | $1.04M | 0.62% | 00.0% | Unchanged |
| Patriot Financial Group Insurance Agency, LLC | 9,933 | $1.05M | 0.12% | −26−0.3% | Reduced |
| Capital Advisors Inc | 9,958 | $1.05M | 0.02% | +844+9.3% | Added |
| Allen Capital Group, LLC | 9,994 | $1.05M | 0.10% | −251−2.4% | Reduced |
| Kidder Stephen W | 10,008 | $1.05M | 0.30% | −246−2.4% | Reduced |
| Hickory Point Bank & Trust | 10,015 | $1.05M | 0.76% | +50+0.5% | Added |
| Everstar Asset Management, LLC | 10,019 | $1.05M | 0.57% | −642−6.0% | Reduced |
| Lipe & Dalton | 10,023 | $1.05M | 0.52% | −346−3.3% | Reduced |
| Graybill Bartz & Assoc Ltd | 10,047 | $1.06M | 0.31% | 00.0% | Unchanged |
| Laurel Oak Wealth Management, LLC | 10,055 | $1.06M | 0.18% | +10,055 | New |
| Total Wealth Planning & Management, Inc. | 10,063 | $1.06M | 0.84% | +10,063 | New |
| Forefront Wealth Management Inc. | 10,072 | $1.06M | 0.76% | −90−0.9% | Reduced |
| Winnow Wealth LLC | 10,028 | $1.06M | 0.79% | −2,626−20.8% | Reduced |
| Lynch Asset Management, Inc. | 10,100 | $1.06M | 0.33% | +1,100+12.2% | Added |