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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, 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

Q3 2026 data is still coming in: 53 institutions have reported holding MRK so far. See Q3 2026

Institutional holders
3,855
+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

53 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: 3,855 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 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 20263,855$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, 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
Maxele Advisors, LLC5,271$677.4K0.47%+5,271New
Mendel Capital Management LLC5,263$676.3K0.30%+29+0.6%Added
Rasp Wealth Solutions, LLC5,259$675.8K0.22%+5,259New
Carr Financial Group Corp5,252$674.9K0.16%+62+1.2%Added
Simon Quick Advisors, LLC5,250$674.7K0.03%+304+6.1%Added
Vantus Wealth LLC5,250$674.6K0.36%+5,250New
Cohen Investment Advisors LLC5,231$672.2K0.30%−490−8.6%Reduced
Galvin, Gaustad & Stein, LLC5,221$670.9K0.05%+35+0.7%Added
Atlas Capital Advisors LLC5,216$670.3K0.07%−1,581−23.3%Reduced
Werba Rubin Papier Wealth Management5,214$670.0K0.08%+97+1.9%Added
Ironwood Financial, llc5,395$669.2K0.10%00.0%Unchanged
Arsenal Capital Advisors LLC5,179$665.5K0.39%+15+0.3%Added
Arcataur Capital Management LLC5,177$665.2K0.16%+87+1.7%Added
Royal Palms Capital LLC5,158$662.8K0.58%+28+0.5%Added
Clark Wealth Partners5,121$662.4K0.37%−168−3.2%Reduced
Worthington Financial Partners, LLC5,149$661.6K0.55%−267−4.9%Reduced
Topsail Wealth Management, LLC5,112$661.2K0.08%+11+0.2%Added
MOR Wealth Management, LLC5,136$660.0K0.26%+5,136New
Beacon Investment Advisors LLC5,120$658.0K0.21%−10.0%Reduced
McLaughlin Asset Management, Inc.5,110$656.9K0.45%+7+0.1%Added
Investment Partners, Ltd.5,098$655.0K0.20%+121+2.4%Added
Presilium Private Wealth, LLC5,084$653.3K0.10%+1,710+50.7%Added
Blake Schutter Theil Wealth Advisors, LLC5,065$650.9K0.44%00.0%Unchanged
Congress Park Capital LLC5,060$650.2K0.18%00.0%Unchanged
Summit Financial Strategies, Inc.5,052$649.2K0.05%−1,005−16.6%Reduced
Lake Street Financial LLC5,051$649.1K0.07%−33−0.6%Reduced
Green Ridge Wealth Planning LLC5,048$648.7K0.27%−322−6.0%Reduced
Successful Portfolios LLC5,204$648.2K0.30%−10.0%Reduced
Golden Reserve Retirement LLC5,044$648.2K0.10%+2,410+91.5%Added
Salvus Wealth Management, LLC5,037$647.3K0.36%+500+11.0%Added
Floyd Financial Group LLC5,359$647.3K0.42%−17−0.3%Reduced
Snowwater Investment Partners, LLC4,988$645.1K0.45%+54+1.1%Added
Fortis Capital Advisors, LLC5,018$644.8K0.07%+1,350+36.8%Added
Westmount Partners, LLC5,013$644.1K0.14%+123+2.5%Added
Pavaki Capital Management LLC5,000$642.5K0.37%00.0%Unchanged
Indiana Trust & Investment Management CO4,996$642.0K0.18%00.0%Unchanged
Cora Capital Advisors LLC4,994$641.7K0.18%+24+0.5%Added
CrossGen Wealth, LLC4,992$641.5K0.50%−512−9.3%Reduced
Laurel Wealth Advisors LLC4,984$640.4K0.06%00.0%Unchanged
Ullmann Financial Group, Inc.4,982$640.1K0.06%+222+4.7%Added
Element Wealth, LLC4,981$640.0K0.24%+4+0.1%Added
NFP Retirement, Inc.4,976$639.4K0.04%−131−2.6%Reduced
Novak & Powell Financial Services, Inc.4,975$639.3K0.30%+15+0.3%Added
S.A. Mason LLC4,968$638.3K0.20%+8+0.2%Added
Founders Grove Wealth Partners, LLC4,961$637.5K0.13%+652+15.1%Added
Financial Enhancement Group LLC4,955$636.7K0.08%+101+2.1%Added
Accretive Wealth Partners, LLC4,954$636.6K0.15%+20.0%Added
BOS Asset Management, LLC4,935$634.1K0.15%00.0%Unchanged
Redwood Investment Management, LLC4,933$634.0K0.06%+37+0.8%Added
Financial Solutions Advisory Group, Inc.5,069$633.9K0.08%00.0%Unchanged
MKT Advisors LLC4,919$633.8K0.20%00.0%Unchanged
ABLE Financial Group, LLC4,923$632.6K0.11%00.0%Unchanged
Palumbo Wealth Management LLC4,918$631.9K0.13%+58+1.2%Added
Sound Income Strategies, LLC4,917$631.9K0.03%+172+3.6%Added
Affinity Capital Advisors, LLC4,984$631.9K0.08%+107+2.2%Added
MEMBERS Trust Co4,917$631.8K0.02%−342−6.5%Reduced
Lynx Investment Advisory4,906$630.3K0.21%+1,585+47.7%Added
Fairscale Capital, LLC4,863$629.0K0.38%00.0%Unchanged
Caliber Wealth Management, LLC4,890$628.4K0.06%−12−0.2%Reduced
Hollencrest Capital Management4,878$626.9K0.04%+101+2.1%Added
Wedge Capital Management L L P4,873$626.2K0.01%−596−10.9%Reduced
Operose Advisors LLC4,872$626.1K0.12%−158−3.1%Reduced
MWA Asset Management4,866$625.3K0.28%00.0%Unchanged
Accel Wealth Management4,862$624.8K0.14%+3+0.1%Added
Plan A Wealth LLC4,860$624.5K0.27%+52+1.1%Added
Keyvantage Wealth, LLC4,857$624.1K0.24%−672−12.2%Reduced
Spartan Planning & Wealth Management4,853$623.7K0.42%−680−12.3%Reduced
Strata Wealth Advisors, LLC4,849$623.1K0.15%+178+3.8%Added
Annex Advisory Services, LLC4,837$621.5K0.01%−250−4.9%Reduced
360 Financial, Inc.4,833$621.1K0.16%+8+0.2%Added
Union Savings Bank4,833$621.0K0.25%00.0%Unchanged
Emprise Bank4,825$620.0K0.23%−68−1.4%Reduced
Liberty Capital Management, Inc.4,814$618.6K0.11%+4,814New
Secured Retirement Advisors, LLC4,813$618.5K0.32%−19,084−79.9%Reduced
Crown Wealth Group, LLC4,810$618.1K0.16%+18+0.4%Added
Sovereign Financial Group, Inc.4,808$617.8K0.09%00.0%Unchanged
Campion Asset Management LLC4,806$617.6K0.38%+45+0.9%Added
Elefante Mark B4,800$616.8K0.27%00.0%Unchanged
Jacobsen Capital Management4,798$616.5K0.18%+40+0.8%Added
Capital City Trust Co4,790$615.5K0.13%+308+6.9%Added
Paulson Wealth Management Inc.4,775$613.6K0.13%+191+4.2%Added
Brady Family Wealth, LLC4,774$613.5K0.18%−1,307−21.5%Reduced
Fairvoy Private Wealth, LLC4,768$612.7K0.12%+326+7.3%Added
Piedmont Capital Management, LLC4,767$612.6K0.37%+496+11.6%Added
Seamount Financial Group Inc4,766$612.4K0.25%00.0%Unchanged
Acima Private Wealth, LLC4,764$612.2K0.18%00.0%Unchanged
Financial Advisors Network, Inc.4,759$611.5K0.07%+28+0.6%Added
Luts & Greenleigh Group, Inc4,755$611.0K0.46%+113+2.4%Added
CWC Advisors, LLC.4,753$610.8K0.27%−85−1.8%Reduced
Smith Thornton Advisors LLC4,908$608.7K0.27%+473+10.7%Added
Fortis Group Advisors, LLC4,715$605.9K0.10%00.0%Unchanged
First Citizens Financial Corp4,715$605.9K0.25%00.0%Unchanged
Core Wealth Advisors, Inc.4,713$605.6K0.12%−493−9.5%Reduced
Mirabaud Asset Management Ltd4,675$604.9K0.50%−7,944−63.0%Reduced
Ninety One SA (PTY) Ltd4,749$603.6K0.03%00.0%Unchanged
Southern Michigan Bank & Trust4,691$602.8K0.21%+2,100+81.0%Added
Tower Wealth Partners, Inc.4,683$601.7K0.30%+159+3.5%Added
UMA Financial Services, Inc.4,682$601.7K0.07%+104+2.3%Added
Cottage Street Advisors LLC4,680$601.3K0.23%+3+0.1%Added
Walser Wealth Management Company, A Ltd Liability Co4,678$601.1K0.25%+937+25.0%Added