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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, Q1 2025

Institutional positions in Merck & Co., Inc. as of Mar 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
3,459
−96 vs. Q4 2024
Shares held
1.98B
+20.8M (+1.1%) vs. Q4 2024
Total value
$177.7B
−$17.2B (−8.8%) vs. Q4 2024
New holders
180
1,354 more added
Sold out
276
1,598 more reduced

63 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2024: 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.

Institutional holdersQ1 2025: 3,459 institutions
Q1 2021: 2,693 institutionsQ2 2021: 2,684 institutionsQ3 2021: 2,658 institutionsQ4 2021: 2,910 institutionsQ1 2022: 2,961 institutionsQ2 2022: 3,019 institutionsQ3 2022: 2,996 institutionsQ4 2022: 3,243 institutionsQ1 2023: 3,187 institutionsQ2 2023: 3,261 institutionsQ3 2023: 3,221 institutionsQ4 2023: 3,443 institutionsQ1 2024: 3,546 institutionsQ2 2024: 3,557 institutionsQ3 2024: 3,501 institutionsQ4 2024: 3,618 institutionsQ1 2025: 3,459 institutionsQ2 2025: 3,337 institutionsQ3 2025: 3,319 institutionsQ4 2025: 3,674 institutionsQ1 2026: 3,812 institutionsQ2 2026: 3,855 institutions
Value heldQ1 2025: $177.7B
Q1 2021: $143.2BQ2 2021: $144.3BQ3 2021: $138.8BQ4 2021: $142.2BQ1 2022: $152.1BQ2 2022: $171.5BQ3 2022: $162.7BQ4 2022: $212.2BQ1 2023: $205.1BQ2 2023: $222.8BQ3 2023: $197.7BQ4 2023: $211.6BQ1 2024: $256.9BQ2 2024: $242.3BQ3 2024: $221.8BQ4 2024: $196.9BQ1 2025: $177.7BQ2 2025: $155.9BQ3 2025: $159.8BQ4 2025: $206.6BQ1 2026: $231.9BQ2 2026: $254.3B
Institutions holding MRK and their total value by quarter
QuarterHoldersValue
Q2 20263,855$254.3B
Q1 20263,812$231.9B
Q4 20253,674$206.6B
Q3 20253,319$159.8B
Q2 20253,337$155.9B
Q1 20253,459$177.7B
Q4 20243,618$196.9B
Q3 20243,501$221.8B
Q2 20243,557$242.3B
Q1 20243,546$256.9B
Q4 20233,443$211.6B
Q3 20233,221$197.7B
Q2 20233,261$222.8B
Q1 20233,187$205.1B
Q4 20223,243$212.2B
Q3 20222,996$162.7B
Q2 20223,019$171.5B
Q1 20222,961$152.1B
Q4 20212,910$142.2B
Q3 20212,658$138.8B
Q2 20212,684$144.3B
Q1 20212,693$143.2B

Institutions, Q1 2025

Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q4 2024.

Institutions holding MRK in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Samalin Investment Counsel, LLC7,162$642.9K0.26%−39−0.5%Reduced
G&S Capital LLC7,162$642.9K0.27%+7,162New
Acorn Wealth Advisors, LLC7,168$643.4K0.27%+64+0.9%Added
Pinnacle Bancorp, Inc.7,195$645.8K0.21%−97−1.3%Reduced
Pring Turner Capital Group Inc7,195$645.8K0.40%+130+1.8%Added
Savvy Advisors, Inc.7,214$647.5K0.07%−129−1.8%Reduced
Vigilare Wealth Management7,220$648.1K0.26%+154+2.2%Added
Prepared Retirement Institute LLC7,240$649.9K0.41%−470−6.1%Reduced
Plan Group Financial, LLC7,255$651.2K0.23%+4,472+160.7%Added
Grace & White Inc7,267$652.3K0.12%00.0%Unchanged
Duncan Williams Asset Management, LLC7,281$653.5K0.24%−375−4.9%Reduced
Cerro Pacific Wealth Advisors LLC6,574$654.0K0.21%−92−1.4%Reduced
Insight 2811, Inc.7,298$655.1K0.33%−310−4.1%Reduced
Systematic Financial Management LP7,300$655.2K0.02%00.0%Unchanged
Zevin Asset Management LLC7,306$656.0K0.10%−519−6.6%Reduced
First Affirmative Financial Network7,309$656.0K0.40%00.0%Unchanged
First Fiduciary Investment Counsel, Inc.7,318$657.0K0.14%−256−3.4%Reduced
Vista Wealth Management Group, LLC7,320$657.0K0.04%−618−7.8%Reduced
Lake Street Financial LLC7,324$657.4K0.11%−162−2.2%Reduced
Financial Engines Advisors L.L.C.7,332$658.5K0.00%−226−3.0%Reduced
Cassaday & Co Wealth Management LLC7,345$659.2K0.02%−232−3.1%Reduced
Sentry Investment Management LLC8,143$661.0K0.45%−2,432−23.0%Reduced
Beddow Capital Management Inc7,375$662.0K0.25%−100−1.3%Reduced
Meeder Asset Management Inc7,386$663.0K0.04%−210−2.8%Reduced
US Asset Management LLC7,383$663.0K0.63%−27−0.4%Reduced
Yoffe Investment Management, LLC7,388$663.2K0.97%+10.0%Added
Cross Staff Investments Inc7,398$664.0K0.50%00.0%Unchanged
Payden & Rygel7,410$665.0K0.06%−104,140−93.4%Reduced
AssuredPartners Investment Advisors, LLC7,421$666.1K0.13%−471−6.0%Reduced
Morton Capital Management LLC7,426$666.6K0.13%+67+0.9%Added
Argentarii, LLC7,449$668.7K0.33%+3,523+89.7%Added
Mosaic Financial Group, LLC7,455$669.0K0.54%−488−6.1%Reduced
Petrus Trust Company, LTA7,465$670.1K0.06%+3,910+110.0%Added
Game Creek Capital, LP7,500$673.2K0.42%−500−6.3%Reduced
Legacy Capital Wealth Partners, LLC7,518$674.8K0.17%+1,410+23.1%Added
Navellier & Associates Inc8,149$675.1K0.09%−6,604−44.8%Reduced
Cromwell Holdings LLC7,473$676.8K0.44%+1,371+22.5%Added
SOA Wealth Advisors, LLC.7,553$678.0K0.14%−19−0.3%Reduced
Sivia Capital Partners, LLC7,553$678.0K0.32%+624+9.0%Added
Pioneer Trust Bank N A7,558$678.4K0.18%+81+1.1%Added
Red Wave Investments LLC7,578$680.2K0.24%−65−0.9%Reduced
Mattern Wealth Management LLC7,583$680.7K0.15%+244+3.3%Added
Marshall Wace, LLP7,607$682.8K0.00%+7,276+2,198.2%Added
Gray Private Wealth, LLC7,624$684.3K0.41%00.0%Unchanged
Sachetta, LLC7,625$686.1K0.28%−611−7.4%Reduced
Compass Capital Corp8,815$686.4K0.36%−6,899−43.9%Reduced
Arlington Trust Co LLC7,655$687.1K0.15%−294−3.7%Reduced
Good Steward Wealth Advisors,LLC7,663$687.8K0.63%+7,663New
Midland Wealth Advisors LLC7,673$688.7K0.04%−888−10.4%Reduced
Aspetuck Financial Management LLC7,686$689.9K0.59%−6,124−44.3%Reduced
Regent Peak Wealth Advisors LLC7,689$690.2K0.16%−2,012−20.7%Reduced
Fulton Breakefield Broenniman LLC7,712$692.2K0.05%−488−6.0%Reduced
Edgewood Management LLC7,718$692.8K0.00%00.0%Unchanged
Texas Capital Bank Wealth Management Services Inc7,727$693.6K0.07%+5,452+239.6%Added
Cercano Management LLC7,730$693.8K0.02%00.0%Unchanged
Continuum Advisory, LLC7,740$694.7K0.09%−341−4.2%Reduced
Nelson, Van Denburg & Campbell Wealth Management Group, LLC7,743$695.0K0.03%−3,751−32.6%Reduced
Live Oak Investment Partners7,747$695.4K0.55%––
Michael B. Yongue7,756$696.2K0.89%−913−10.5%Reduced
Heartland Bank & Trust Co7,770$697.4K0.36%−435−5.3%Reduced
Monterey Private Wealth, Inc.7,785$698.8K0.21%−238−3.0%Reduced
Barnes Pettey Financial Advisors, LLC7,786$698.9K0.54%−113−1.4%Reduced
Claris Financial LLC7,034$699.8K0.46%00.0%Unchanged
Quent Capital, LLC7,810$701.0K0.07%−1,317−14.4%Reduced
Claret Asset Management Corp–$702.0K0.10%––
Davidson Trust Co7,852$704.8K0.34%+162+2.1%Added
Verus Capital Partners, LLC7,861$705.6K0.07%+104+1.3%Added
Orca Wealth Management, LLC7,894$708.6K0.63%+268+3.5%Added
ProVise Management Group, LLC7,896$708.7K0.06%−138−1.7%Reduced
RFP Financial Group LLC7,918$710.7K0.29%+10+0.1%Added
Tiemann Investment Advisors, LLC7,929$711.7K0.32%−465−5.5%Reduced
Barlow Wealth Partners, Inc.8,607$712.1K0.09%−800−8.5%Reduced
Wrapmanager Inc7,957$714.3K0.19%+354+4.7%Added
Ethos Financial Group, LLC7,123$714.5K0.07%00.0%Unchanged
Key Client Fiduciary Advisors, LLC7,968$715.2K0.33%+26+0.3%Added
SRN Advisors, LLC7,999$718.0K0.81%−218−2.7%Reduced
Mitsubishi UFJ Asset Management (UK) Ltd.8,000$718.0K0.39%+8,000New
Focused Wealth Management, Inc8,004$718.5K0.10%+484+6.4%Added
Fairtree Asset Management (Pty) Ltd8,011$719.1K0.58%+8,011New
ABLE Financial Group, LLC8,016$719.5K0.20%−162−2.0%Reduced
Willner & Heller, LLC8,017$719.6K0.67%+231+3.0%Added
Abel Hall, LLC8,019$719.8K0.43%+3,005+59.9%Added
Schear Investment Advisers, LLC8,023$720.1K0.41%−246−3.0%Reduced
Wealth Group, Ltd.8,032$721.0K0.47%−1,498−15.7%Reduced
Fox Run Management, L.L.C.8,036$721.3K0.11%+8,036New
Staley Capital Advisers Inc8,045$722.1K0.03%00.0%Unchanged
Amussen Hunsaker Associates LLC7,971$722.1K0.10%−271−3.3%Reduced
Ami Asset Management Corp8,057$723.2K0.04%−159−1.9%Reduced
Quotient Wealth Partners, LLC8,069$724.3K0.02%−1,177−12.7%Reduced
NWF Advisory Services Inc.8,073$724.7K0.10%−501−5.8%Reduced
United Advisor Group, LLC8,082$725.4K0.15%−2,334−22.4%Reduced
Occudo Quantitative Strategies LP8,138$726.2K0.10%+8,138New
Resolute Wealth Strategies, LLC8,096$726.7K0.41%+443+5.8%Added
Traphagen Investment Advisors LLC8,103$727.3K0.08%−391−4.6%Reduced
Matrix Private Capital Group LLC8,031$727.4K0.43%−340−4.1%Reduced
Eldridge Investment Advisors, Inc.8,105$727.5K0.17%+6+0.1%Added
Builder Investment Group Inc8,117$728.6K0.21%−77−0.9%Reduced
Beaumont Asset Management, L.L.C.8,134$730.1K0.44%+8,134New
Autumn Glory Partners, LLC8,141$730.8K0.37%00.0%Unchanged
Barton Investment Management8,158$732.3K0.09%00.0%Unchanged