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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; 3,854 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 2026

Institutional positions in Merck & Co., Inc. as of Jun 30, 2026. 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
3,854
+96 vs. Q1 2026
Shares held
1.98B
+52.6M (+2.7%) vs. Q1 2026
Total value
$254.3B
+$23.0B (+9.9%) vs. Q1 2026
New holders
214
1,635 more added
Sold out
118
1,508 more reduced

54 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2026: 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 holdersQ2 2026: 3,854 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: 3,618 institutionsQ1 2025: 3,459 institutionsQ2 2025: 3,337 institutionsQ3 2025: 3,319 institutionsQ4 2025: 3,674 institutionsQ1 2026: 3,812 institutionsQ2 2026: 3,854 institutions
Value heldQ2 2026: $254.3B
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 20263,854$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 20243,502$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, Q2 2026

Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q1 2026.

Institutions holding MRK in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Strategic Family Wealth Counselors, L.L.C.2,806$360.6K0.08%−23−0.8%Reduced
Osborne Partners Capital Management, LLC2,811$361.2K0.02%+400+16.6%Added
Bank of Nova Scotia Trust Co2,811$361.2K0.03%−3,627−56.3%Reduced
Evansbrook LLC2,813$361.5K0.22%+446+18.8%Added
TFB Advisors LLC2,814$361.6K0.16%−10−0.4%Reduced
Aspire Private Capital, LLC2,819$362.1K0.07%−658−18.9%Reduced
Agp Franklin, LLC2,822$362.6K0.16%00.0%Unchanged
Catalyst Private Wealth, LLC2,825$363.0K0.18%+2,825New
Grant Street Asset Management, Inc.2,829$363.6K0.06%+709+33.4%Added
Vantage Point Financial LLC2,831$363.8K0.11%+90+3.3%Added
Prosperitas Financial LLC2,835$364.3K0.12%+585+26.0%Added
AGH Wealth Advisors, LLC2,841$365.1K0.23%+74+2.7%Added
BKM Wealth Management, LLC2,845$365.6K0.13%−9−0.3%Reduced
Cooper Capital Advisors LLC2,854$366.7K0.16%+2,854New
Wealth Quarterback LLC2,856$367.0K0.11%−298−9.4%Reduced
Chelsea Counsel Co2,840$367.4K0.16%00.0%Unchanged
Dorsey Wright & Associates2,862$367.8K0.06%−8,363−74.5%Reduced
Veratis Advisors, Inc.2,863$367.9K0.26%+2,863New
Consilio Wealth Advisors, LLC2,867$368.5K0.09%−11−0.4%Reduced
Parvin Asset Management, LLC2,875$369.4K0.30%−150−5.0%Reduced
Panoramic Investment Advisors, LLC2,875$369.4K0.18%00.0%Unchanged
Invera Wealth Advisors, LLC2,879$370.0K0.20%−314−9.8%Reduced
HBE Wealth Management, LLC2,882$370.3K0.27%+17+0.6%Added
Salomon & Ludwin, LLC2,954$370.3K0.03%−68−2.3%Reduced
Cedarwood Wealth LLC2,889$371.3K0.28%+84+3.0%Added
Horst & Graben Wealth Management LLC2,962$371.3K0.05%+398+15.5%Added
Braun-Bostich & Associates Inc.2,891$371.5K0.21%−363−11.2%Reduced
Grandview Asset Management LLC2,892$371.6K0.09%+2+0.1%Added
Vista Investment Partners II, LLC2,895$372.0K0.15%−27−0.9%Reduced
Cornerstone Wealth, LLC3,012$372.4K0.19%00.0%Unchanged
Strategic Investment Solutions, Inc.2,899$372.5K0.09%+5+0.2%Added
Kellett Schaffner Wealth Advisors LLC2,903$373.1K0.17%+81+2.9%Added
Prentiss Smith & Co Inc2,904$373.2K0.20%−70−2.4%Reduced
Pekao Towarzystwo Funduszy Inwestycyjnych S.A.2,905$373.3K0.24%+2,905New
ETF Store, Inc.2,910$373.9K0.31%+15+0.5%Added
River Street Advisors LLC2,923$375.6K0.11%00.0%Unchanged
Hoxton Planning & Management, LLC2,925$375.9K0.10%−55−1.8%Reduced
Kaydan Wealth Management, Inc.2,925$375.9K0.11%00.0%Unchanged
Bond & Devick Financial Network, Inc.2,927$376.1K0.09%00.0%Unchanged
Henson-Edgewater Management, LLC2,835$376.8K0.20%+870+44.3%Added
Stirlingshire Investments, Inc.2,923$377.8K0.28%−185−6.0%Reduced
DMG Group, LLC2,940$377.8K0.26%−10.0%Reduced
Fortitude Family Office, LLC2,950$379.1K0.07%+928+45.9%Added
North Capital, Inc.2,957$379.9K0.29%+37+1.3%Added
Hudson Portfolio Management LLC2,961$380.5K0.29%00.0%Unchanged
Walker Asset Management, LLC2,964$380.9K0.19%+20+0.7%Added
Tamar Securities, LLC2,966$381.1K0.04%+543+22.4%Added
Vista Capital Partners, Inc.2,968$381.4K0.03%+336+12.8%Added
J. M. Brown & Associates Inc.2,974$382.2K0.22%+2,974New
Cadent Capital Advisors, LLC2,978$382.7K0.08%+18+0.6%Added
Lifestyle Asset Management, Inc.2,979$382.8K0.10%−10.0%Reduced
E6 Portfolios, LLC2,981$383.1K0.31%+582+24.3%Added
TBH Global Asset Management, LLC2,984$383.5K0.07%+408+15.8%Added
Directional Asset Management2,985$383.6K0.37%−33−1.1%Reduced
SLT Holdings LLC2,987$383.8K0.24%+2,987New
Aufman Associates Inc2,990$384.2K0.15%−685−18.6%Reduced
Monument Group Wealth Advisors, LLC4,935$384.5K0.18%+2,405+95.1%Added
Vista Investment Management2,993$384.6K0.12%−37−1.2%Reduced
CDKV Holdings LLC2,994$384.7K0.30%00.0%Unchanged
Evanson Financial, LLC2,997$385.1K0.02%+2,997New
Canvas Wealth Advisors, LLC2,978$385.2K0.05%−12−0.4%Reduced
Opal Wealth Advisors, LLC2,998$385.3K0.08%+15+0.5%Added
SummitTX Capital, L.P.3,000$385.5K0.01%+3,000New
RWM Asset Management, LLC2,963$385.8K0.05%−404−12.0%Reduced
Wetzel Investment Advisors, Inc.2,983$385.9K0.13%−421−12.4%Reduced
Oakmont Advisory Group, LLC3,005$386.2K0.32%+158+5.5%Added
Cornerstone Planning Group LLC3,033$386.7K0.05%+53+1.8%Added
Northwest Quadrant Wealth Management, LLC3,013$387.2K0.07%+6+0.2%Added
TrustBank3,013$387.2K0.13%−42−1.4%Reduced
Cascades Capital Asset Management, LLC3,016$387.5K0.14%+4+0.1%Added
Tilson Financial Group, Inc.3,020$388.1K0.11%+89+3.0%Added
Lorne Steinberg Wealth Management Inc.3,023$388.5K0.08%00.0%Unchanged
Carson Advisory Inc.3,024$388.6K0.18%+16+0.5%Added
Westside Investment Management, Inc.3,026$388.9K0.05%+10.0%Added
Byrne Asset Management LLC3,027$389.0K0.21%−10−0.3%Reduced
KRS Capital Management, LLC3,029$389.2K0.18%+19+0.6%Added
Harrell Investment Partners, LLC3,030$389.4K0.08%+5+0.2%Added
August Group Capital Ltd3,033$389.7K0.43%−20−0.7%Reduced
FDx Advisors, Inc.3,036$390.0K0.12%+346+12.9%Added
Westfuller Advisors, LLC3,016$390.1K0.14%−45−1.5%Reduced
TriaGen Wealth Management LLC3,037$390.3K0.10%00.0%Unchanged
Dumont & Blake Investment Advisors LLC3,043$391.0K0.09%−60−1.9%Reduced
CPA Asset Management LLC3,048$391.7K0.11%00.0%Unchanged
Balance Wealth, LLC3,051$392.0K0.10%+9+0.3%Added
Henderson Brothers Financial Partners, LLC3,051$392.1K0.19%−3,164−50.9%Reduced
Wilkerson Advisory Group LLC3,053$392.4K0.12%−592−16.2%Reduced
True Wealth Design, LLC3,064$393.7K0.09%+75+2.5%Added
Buckhead Capital Management LLC3,066$393.9K0.14%00.0%Unchanged
Green Harvest Asset Management LLC3,066$394.0K0.00%+653+27.1%Added
Schneider Downs Wealth Management Advisors, LP3,068$394.2K0.04%+37+1.2%Added
JMN Financial LLC3,048$394.2K0.31%−286−8.6%Reduced
BXM Wealth LLC3,073$394.9K0.21%00.0%Unchanged
Whelan Financial3,078$395.5K0.11%+216+7.5%Added
Partners Wealth Management, LLC3,079$395.7K0.39%00.0%Unchanged
Morris Financial Concepts, Inc.3,079$395.7K0.12%+33+1.1%Added
Mission Creek Capital Partners, Inc.3,080$395.8K0.07%−380−11.0%Reduced
Pin Oak Investment Advisors Inc3,079$396.0K0.28%−187−5.7%Reduced
TMB Capital Partners, LLC3,085$396.4K0.12%−1,049−25.4%Reduced
DB&C Advisors, LLC3,091$397.2K0.43%+19+0.6%Added
Knollwood Investment Advisory, LLC3,100$398.4K0.04%00.0%Unchanged