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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, 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
3,675
+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
1,380 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.

Institutional holdersQ4 2025: 3,675 institutions
Q1 2021: 2,693 institutionsQ2 2021: 2,684 institutionsQ3 2021: 2,658 institutionsQ4 2021: 2,910 institutionsQ1 2022: 2,962 institutionsQ2 2022: 3,020 institutionsQ3 2022: 2,997 institutionsQ4 2022: 3,244 institutionsQ1 2023: 3,188 institutionsQ2 2023: 3,262 institutionsQ3 2023: 3,222 institutionsQ4 2023: 3,444 institutionsQ1 2024: 3,547 institutionsQ2 2024: 3,558 institutionsQ3 2024: 3,502 institutionsQ4 2024: 3,619 institutionsQ1 2025: 3,460 institutionsQ2 2025: 3,338 institutionsQ3 2025: 3,320 institutionsQ4 2025: 3,675 institutionsQ1 2026: 3,813 institutionsQ2 2026: 3,855 institutions
Value heldQ4 2025: $206.6B
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 20263,813$231.9B
Q4 20253,675$206.6B
Q3 20253,320$159.8B
Q2 20253,338$155.9B
Q1 20253,460$177.7B
Q4 20243,619$196.9B
Q3 20243,502$221.8B
Q2 20243,558$242.3B
Q1 20243,547$256.9B
Q4 20233,444$211.6B
Q3 20233,222$197.7B
Q2 20233,262$222.8B
Q1 20233,188$205.1B
Q4 20223,244$212.2B
Q3 20222,997$162.7B
Q2 20223,020$171.5B
Q1 20222,962$152.1B
Q4 20212,910$142.2B
Q3 20212,658$138.8B
Q2 20212,684$144.3B
Q1 20212,693$143.2B

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q3 2025.

Institutions holding MRK in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Syntegra Private Wealth Group, LLC4,390$462.1K0.04%−7−0.2%Reduced
Verity & Verity, LLC4,391$462.2K0.04%+449+11.4%Added
Keyvantage Wealth, LLC4,393$462.4K0.20%−300−6.4%Reduced
Palogic Value Management, L.P.4,395$462.6K0.20%00.0%Unchanged
Vantus Wealth LLC4,397$462.8K0.34%+4,397New
Kinloch Capital, LLC4,412$464.4K0.20%+48+1.1%Added
Lakeridge Wealth Management LLC4,415$464.7K0.21%+131+3.1%Added
Mainsail Financial Group, LLC4,416$464.8K0.19%−50−1.1%Reduced
Bedell Frazier Investment Counseling, LLC4,419$465.2K0.09%−593−11.8%Reduced
OneAscent Wealth Management LLC4,422$465.5K0.15%−839−15.9%Reduced
Osterweis Capital Management Inc4,431$466.4K0.02%+248+5.9%Added
Regatta Capital Group, LLC4,432$466.5K0.07%−96−2.1%Reduced
Smith Thornton Advisors LLC4,435$466.8K0.24%+56+1.3%Added
Bender Robert & Associates4,437$467.0K0.10%−375−7.8%Reduced
Clarus Group, Inc.4,439$467.3K0.17%−88−1.9%Reduced
Goldstone Financial Group, LLC4,443$467.6K0.05%+270+6.5%Added
Princeton Global Asset Management LLC4,446$468.0K0.08%+1,440+47.9%Added
Dupree Financial Group, LLC4,458$469.3K0.17%00.0%Unchanged
Clark Asset Management, LLC4,459$469.4K0.05%−345−7.2%Reduced
Summit Wealth & Retirement Planning, Inc.4,461$469.6K0.11%00.0%Unchanged
Apollon Financial, LLC4,462$469.6K0.07%+724+19.4%Added
Capital City Trust Co4,462$469.7K0.10%−974−17.9%Reduced
Eads & Heald Wealth Management4,468$470.3K0.23%−347−7.2%Reduced
Fairvoy Private Wealth, LLC4,471$470.6K0.11%+348+8.4%Added
Gateway Wealth Partners, LLC4,472$470.7K0.05%+755+20.3%Added
Cranbrook Wealth Management, LLC4,475$471.0K0.09%+464+11.6%Added
Walkner Condon Financial Advisors LLC4,476$471.1K0.07%+207+4.8%Added
Meridian Investment Counsel Inc.4,482$471.8K0.11%−295−6.2%Reduced
Capital Advisors, Ltd. LLC4,486$472.0K0.06%−101−2.2%Reduced
Miller Global Investments, LLC4,492$472.8K0.43%+4,492New
BOK Financial Private Wealth, Inc.4,465$473.8K0.03%−3−0.1%Reduced
Fortress Private Ledger, LLC4,504$474.1K0.16%+128+2.9%Added
Garton & Associates Financial Advisors LLC4,508$474.5K0.27%+4,508New
First Citizens Financial Corp4,515$475.2K0.23%00.0%Unchanged
Fell Capital Management4,515$475.2K0.46%+4,515New
Manchester Financial Inc4,523$476.1K0.09%+804+21.6%Added
Piedmont Capital Management, LLC4,524$476.2K0.31%+4,524New
Hollencrest Capital Management4,524$476.2K0.02%−340−7.0%Reduced
KG&L Capital Management,LLC4,520$476.7K0.12%−6,229−57.9%Reduced
DHJJ Financial Advisors, Ltd.4,532$477.0K0.16%00.0%Unchanged
Benin Management CORP4,536$477.5K0.11%00.0%Unchanged
Magnolia Capital Advisors LLC4,541$477.9K0.10%−468−9.3%Reduced
Roehl & Yi Investment Advisors, LLC4,541$478.0K0.19%−31−0.7%Reduced
HCR Wealth Advisors4,556$479.6K0.05%+65+1.4%Added
Cornerstone Capital, Inc.4,557$479.7K0.05%+459+11.2%Added
Steigerwald, Gordon & Koch Inc.4,562$480.2K0.05%−281−5.8%Reduced
Centric Wealth Management4,241$480.8K0.10%−161−3.7%Reduced
Sather Financial Group Inc4,571$481.1K0.03%−46−1.0%Reduced
Focused Alpha, LLC4,571$481.2K0.14%+4,571New
Westmount Partners, LLC4,571$481.2K0.12%−69−1.5%Reduced
Financial Partners Group, Inc4,365$481.3K0.06%+607+16.2%Added
United Bank4,575$481.6K0.06%00.0%Unchanged
Sunburst Financial Group, LLC4,577$481.7K0.10%+105+2.3%Added
Cardiff Park Advisors, LLC4,577$481.8K0.04%+13+0.3%Added
Seascape Capital Management4,583$482.0K0.14%−2,606−36.2%Reduced
Cortland Associates Inc4,580$482.0K0.06%−1,123−19.7%Reduced
Palumbo Wealth Management LLC4,596$483.8K0.12%+220+5.0%Added
Centurion Wealth Management LLC4,598$484.0K0.11%+371+8.8%Added
Farmers & Merchants Trust Co of Chambersburg PA4,600$484.0K0.14%−520−10.2%Reduced
Connors Investor Services Inc4,615$485.8K0.04%−110−2.3%Reduced
Central Pacific Bank - Trust Division4,617$486.0K0.06%−347−7.0%Reduced
Luts & Greenleigh Group, Inc4,631$487.5K0.41%−79−1.7%Reduced
Accretive Wealth Partners, LLC4,644$488.8K0.15%−545−10.5%Reduced
Strata Wealth Advisors, LLC4,646$489.0K0.14%−552−10.6%Reduced
Flatrock Wealth Partners LLC4,608$489.0K0.23%+4,608New
Presilium Private Wealth, LLC4,649$489.3K0.09%00.0%Unchanged
Garrett Wealth Advisory Group, LLC4,653$489.8K0.09%00.0%Unchanged
Bourne Lent Asset Management Inc4,657$490.2K0.16%00.0%Unchanged
Crown Wealth Group, LLC4,659$490.4K0.14%+356+8.3%Added
Perennial Investment Advisors, LLC4,661$490.5K0.04%+738+18.8%Added
O'Brien Greene & Co. Inc4,668$491.4K0.15%+186+4.1%Added
Sovereign Financial Group, Inc.4,669$491.4K0.09%−10−0.2%Reduced
Lumbard & Kellner, LLC4,671$491.7K0.17%00.0%Unchanged
Cottage Street Advisors LLC4,675$492.1K0.21%+20.0%Added
Tred Avon Family Wealth, LLC4,680$492.6K0.16%+2,219+90.2%Added
Northern Financial Advisors Inc4,681$492.8K0.56%−2,744−37.0%Reduced
RB Capital Management, LLC4,683$492.9K0.10%+577+14.1%Added
Victory Financial Group, LLC4,695$494.2K0.06%+1,155+32.6%Added
Operose Advisors LLC4,701$494.8K0.12%+796+20.4%Added
Annandale Capital, LLC4,703$495.0K0.08%00.0%Unchanged
Milestone Asset Management, LLC4,707$495.5K0.09%+250+5.6%Added
Jacobsen Capital Management4,711$495.9K0.16%−178−3.6%Reduced
Gemmer Asset Management LLC4,715$496.3K0.04%+71+1.5%Added
Affinity Capital Advisors, LLC4,730$497.9K0.07%+824+21.1%Added
DLK Investment Management, LLC4,736$498.5K0.19%00.0%Unchanged
Sawgrass Asset Management LLC4,755$500.5K0.06%+138+3.0%Added
Chase Investment Counsel Corp4,768$501.0K0.14%−2,668−35.9%Reduced
Roberts Glore & Co Inc4,762$501.2K0.13%−153−3.1%Reduced
Acima Private Wealth, LLC4,764$501.5K0.16%00.0%Unchanged
Seamount Financial Group Inc4,766$501.7K0.23%+16+0.3%Added
360 Financial, Inc.4,775$502.6K0.15%+36+0.8%Added
Baker Tilly Wealth Management, LLC4,776$502.7K0.12%−7,378−60.7%Reduced
Cahill Financial Advisors Inc4,780$503.2K0.06%−10−0.2%Reduced
Spartan Planning & Wealth Management4,783$503.5K0.37%+4,783New
Carolina Wealth Advisors, LLC4,791$504.3K0.22%+1,000+26.4%Added
Cowa, LLC4,792$504.4K0.15%+4,792New
Ameriflex Group, Inc.4,795$504.7K0.26%−3,263−40.5%Reduced
Guardian Capital, LLC4,796$504.9K0.45%+4,796New
Clark Wealth Partners4,798$505.0K0.31%00.0%Unchanged
Campion Asset Management LLC4,800$505.2K0.35%−12−0.2%Reduced