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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: 20 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
Dickmeyer Boyce Financial Management, Inc.10,129$1.30M0.67%+891+9.6%Added
First Washington CORP10,130$1.30M0.32%00.0%Unchanged
Plotkin Financial Advisors, LLC10,131$1.30M0.54%00.0%Unchanged
Leisure Capital Management10,142$1.30M0.41%00.0%Unchanged
Notis-McConarty Edward10,150$1.30M0.56%00.0%Unchanged
Wealth Effects LLC10,164$1.31M0.35%+350+3.6%Added
Wellington Shields Capital Management, LLC10,175$1.31M0.17%+3,201+45.9%Added
CSM Advisors, LLC10,162$1.31M0.03%−981−8.8%Reduced
Spirepoint Private Client, LLC10,184$1.31M0.11%−1,347−11.7%Reduced
CSS LLC10,210$1.31M0.06%−3,655−26.4%Reduced
VeraBank, N.A.10,222$1.31M0.22%−377−3.6%Reduced
Aviso Wealth Management10,229$1.31M0.52%−68−0.7%Reduced
NBH Bank10,243$1.32M0.55%+10,243New
Navigation Group, LLC10,265$1.32M0.26%00.0%Unchanged
Oslo Pensjonsforsikring AS10,269$1.32M0.15%−1,378−11.8%Reduced
Patriot Financial Group Insurance Agency, LLC10,279$1.32M0.14%−11,053−51.8%Reduced
BankPlus Trust Department10,294$1.32M0.31%−1,008−8.9%Reduced
Quotient Wealth Partners, LLC10,346$1.33M0.03%+563+5.8%Added
Gateway Wealth Partners, LLC10,347$1.33M0.08%−6,284−37.8%Reduced
Formidable Asset Management, LLC11,070$1.33M0.21%−200−1.8%Reduced
Baxter Bros Inc10,391$1.34M0.15%+824+8.6%Added
Dynasty Wealth Management, LLC10,391$1.34M0.01%−136−1.3%Reduced
BluePath Capital Management, LLC10,393$1.34M0.73%−652−5.9%Reduced
Zullo Investment Group, Inc.10,396$1.34M0.46%−726−6.5%Reduced
Eagle Wealth Strategies LLC10,404$1.34M0.51%−74−0.7%Reduced
AdvisorNet Financial, Inc10,405$1.34M0.06%−295−2.8%Reduced
Old Mission Investment Co LLC10,342$1.34M0.28%−10−0.1%Reduced
Advisor Resource Council10,570$1.34M0.45%+2,407+29.5%Added
Trust Co of the South10,430$1.34M0.19%−133−1.3%Reduced
Unified Investment Management10,446$1.34M1.25%+306+3.0%Added
Sage Rhino Capital LLC10,448$1.34M0.22%+34+0.3%Added
Hedges Asset Management LLC10,450$1.34M0.88%+10,450New
Gilman Hill Asset Management, LLC10,457$1.34M0.18%−400−3.7%Reduced
Westbourne Investment Advisors, Inc.10,461$1.34M0.37%+200+1.9%Added
Klingman & Associates, LLC10,463$1.34M0.06%+166+1.6%Added
Severin Investments, LLC10,464$1.34M1.01%−1,409−11.9%Reduced
Murphy, Middleton, Hinkle & Parker, Inc.10,472$1.35M0.55%+9+0.1%Added
Crewe Advisors LLC10,490$1.35M0.10%+665+6.8%Added
CRA Financial Services, LLC10,499$1.35M0.16%+136+1.3%Added
B&L Asset Management LLC10,538$1.35M0.47%+358+3.5%Added
Langley Wealth Management, LLC10,546$1.36M1.32%+10,546New
WBH Advisory Inc10,549$1.36M0.09%−413−3.8%Reduced
Westco Advisory Services Inc10,558$1.36M0.82%−328−3.0%Reduced
Millstone Evans Group, LLC10,569$1.36M0.73%−3,017−22.2%Reduced
Allen Capital Group, LLC10,589$1.36M0.11%−26−0.2%Reduced
Retirement Planning Co of New England, Inc.10,597$1.36M0.49%+31+0.3%Added
Summit Financial Wealth Advisors, LLC10,611$1.36M0.17%+754+7.6%Added
Venturi Wealth Management, LLC10,622$1.36M0.05%+502+5.0%Added
Dover Advisors, LLC12,880$1.37M0.56%+1,456+12.7%Added
Payne Capital LLC10,637$1.37M1.14%00.0%Unchanged
Breakwater Capital Group10,650$1.37M0.16%−1,765−14.2%Reduced
WNY Asset Management, LLC10,678$1.37M0.12%−81−0.8%Reduced
M. Kraus & Co10,698$1.37M0.36%00.0%Unchanged
Corundum Group, Inc.10,703$1.38M0.41%+205+2.0%Added
Ami Asset Management Corp10,718$1.38M0.08%+222+2.1%Added
Marble Wealth, LLC10,741$1.38M0.21%−362−3.3%Reduced
VUB Generali dochodkova spravcovska spolocnost, a.s.10,748$1.38M0.95%00.0%Unchanged
Meadow Creek Wealth Advisors LLC10,790$1.39M0.85%−1,589−12.8%Reduced
Apriem Advisors10,808$1.39M0.12%+231+2.2%Added
Lyell Wealth Management, LP10,816$1.39M0.09%+5,141+90.6%Added
Focus Financial Network, Inc.10,855$1.39M0.04%+141+1.3%Added
Forza Wealth Management, LLC10,879$1.40M0.43%00.0%Unchanged
Wolff Financial Management LLC10,886$1.40M0.28%−199−1.8%Reduced
Forum Financial Management, LP10,899$1.40M0.02%+406+3.9%Added
Mechanics Financial Corp10,915$1.40M0.50%+312+2.9%Added
MBA Advisors LLC10,918$1.40M0.48%+181+1.7%Added
Tradewinds, LLC.2,016$1.40M0.44%−5,271−72.3%Reduced
Cornerstone Advisory, LLC10,923$1.40M0.12%+448+4.3%Added
Hilltop National Bank10,944$1.41M0.30%−252−2.3%Reduced
Wimmer Associates 1, LLC10,952$1.41M0.64%−112−1.0%Reduced
Elevated Private Wealth, LLC10,972$1.41M1.34%+10,972New
Physicians Financial Services, Inc.10,970$1.41M0.35%−50−0.5%Reduced
Wealth Group, Ltd.10,970$1.41M0.35%+8,303+311.3%Added
Drive Wealth Management, LLC10,904$1.41M0.25%+1,892+21.0%Added
Weaver C. Barksdale & Associates, Inc.10,979$1.41M1.27%−28−0.3%Reduced
North Star Asset Management Inc10,981$1.41M0.06%+30+0.3%Added
Pullen Investment Management, LLC10,982$1.41M0.65%+127+1.2%Added
London & Capital Asset Management Ltd10,993$1.41M0.01%−296−2.6%Reduced
Pegasus Asset Management, Inc.10,995$1.41M0.40%00.0%Unchanged
Headlands Technologies LLC10,997$1.41M0.15%+10,997New
FSM Wealth Advisors, LLC11,015$1.42M0.15%+826+8.1%Added
Annandale Capital, LLC11,035$1.42M0.21%+6,310+133.5%Added
Cambria Investment Management, L.P.11,069$1.42M0.07%+3,799+52.3%Added
Providence Wealth Advisors, LLC11,036$1.42M0.84%−92−0.8%Reduced
City Holding Co11,085$1.42M0.16%+109+1.0%Added
CVA Family Office, LLC11,140$1.43M0.13%+157+1.4%Added
Rogco, LP11,143$1.43M0.44%+2,139+23.8%Added
Hardman Johnston Global Advisors LLC11,210$1.44M0.05%00.0%Unchanged
Johnson & White Wealth Management, LLC11,213$1.44M0.54%−29−0.3%Reduced
Carlton Hofferkamp & Jenks Wealth Management, LLC11,335$1.44M0.47%−239−2.1%Reduced
Bank Hapoalim BM11,273$1.45M0.10%−246−2.1%Reduced
Diligent Investors, LLC11,294$1.45M0.32%−169−1.5%Reduced
KC Investment Advisors, LLC11,335$1.46M0.28%+923+8.9%Added
Ark Wealth Advisors LLC11,374$1.46M1.30%+194+1.7%Added
Harbor Investment Advisory, LLC11,386$1.46M0.10%+342+3.1%Added
Caption Management, LLC11,400$1.46M0.05%+4,900+75.4%Added
Clear Creek Financial Management, LLC11,408$1.47M0.09%+1,549+15.7%Added
Capital Fund Management S.A.11,423$1.47M0.01%+11,423New
Center for Financial Planning, Inc.11,433$1.47M0.14%−44−0.4%Reduced
MidFirst Bank11,438$1.47M0.10%00.0%Unchanged