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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
Viawealth, LLC5,504$494.0K0.30%−45−0.8%Reduced
Campbell Deegan Wealth Management, LLC5,504$494.1K0.57%−409−6.9%Reduced
Sendero Wealth Management, LLC5,507$494.3K0.07%+421+8.3%Added
Horan Securities, Inc.5,511$494.7K0.19%−927−14.4%Reduced
Sweeney & Michel, LLC6,278$495.7K0.22%+6,278New
Addison Advisors LLC5,528$496.2K0.14%−147−2.6%Reduced
Maxele Advisors, LLC5,536$496.9K0.48%−208−3.6%Reduced
Lyell Wealth Management, LP5,539$497.2K0.05%−1,175−17.5%Reduced
Potentia Wealth5,550$498.2K0.23%−830−13.0%Reduced
CWC Advisors, LLC.5,552$498.3K0.28%+472+9.3%Added
RB Capital Management, LLC5,557$498.8K0.12%−318−5.4%Reduced
First Bank & Trust5,566$499.6K0.10%−790−12.4%Reduced
Wagner Wealth Management, LLC5,578$500.7K0.12%−154−2.7%Reduced
Congress Park Capital LLC5,581$501.0K0.19%−500−8.2%Reduced
Ironwood Financial, llc5,589$501.7K0.11%−193−3.3%Reduced
Westover Capital Advisors, LLC5,593$502.0K0.11%−32,631−85.4%Reduced
Lakeshore Capital Group, Inc.5,595$502.2K0.48%+227+4.2%Added
Argonautica Private Wealth Management, Inc5,597$502.4K0.17%00.0%Unchanged
Gibbs Wealth Management5,597$502.4K0.12%+793+16.5%Added
Readystate Asset Management LP5,599$502.6K0.03%−8,235−59.5%Reduced
Shayne & Co., LLC5,611$503.6K0.12%00.0%Unchanged
Chemistry Wealth Management LLC5,615$504.0K0.12%−36−0.6%Reduced
Osprey Private Wealth LLC5,625$504.9K0.30%+2,500+80.0%Added
Cortland Associates Inc5,623$505.0K0.06%+32+0.6%Added
Carl P. Sherr & Co., LLC5,637$506.0K0.28%−585−9.4%Reduced
Summit Financial Strategies, Inc.5,641$506.4K0.05%+241+4.5%Added
Campion Asset Management LLC5,642$506.4K0.39%00.0%Unchanged
Defined Wealth Management, LLC5,652$507.3K0.34%+69+1.2%Added
Liontrust Investment Partners LLP5,660$508.0K0.01%−5,506−49.3%Reduced
Versor Investments LP5,666$508.6K0.08%+5,666New
Eagle Wealth Strategies LLC5,677$509.6K0.31%−690−10.8%Reduced
Capital City Trust Co5,688$510.6K0.14%+220+4.0%Added
JNBA Financial Advisors5,695$511.2K0.05%00.0%Unchanged
Cary Street Partner Investment Advisory LLC5,712$512.7K0.30%−412−6.7%Reduced
Clayton Financial Group LLC5,718$513.2K0.19%−76−1.3%Reduced
C2P Capital Advisory Group, LLC d.b.a. Prosperity Capital Advisors5,909$514.8K0.04%−133−2.2%Reduced
Lionshead Wealth Management, LLC5,686$514.9K0.53%+344+6.4%Added
Trail Ridge Investment Advisors, LLC5,741$515.3K0.27%−1,364−19.2%Reduced
MFA Wealth Services5,745$515.7K0.42%−533−8.5%Reduced
Vishria Bird Financial Group, LLC5,755$516.6K0.18%00.0%Unchanged
Bedel Financial Consulting, Inc.6,537$516.7K0.07%+64+1.0%Added
Enterprise Bank & Trust Co5,761$517.1K0.20%00.0%Unchanged
Marietta Investment Partners LLC5,781$518.9K0.13%−15,504−72.8%Reduced
Nadler Financial Group, Inc.5,783$519.1K0.06%−996−14.7%Reduced
Boltwood Capital Management5,783$519.1K0.16%+45+0.8%Added
Delta Investment Management, LLC5,794$520.1K0.10%−901−13.5%Reduced
Fiduciary Financial Group, LLC6,746$523.1K0.11%−125−1.8%Reduced
My Legacy Advisors, LLC5,841$524.3K0.20%−151−2.5%Reduced
Trifecta Capital Advisors, LLC5,845$524.6K0.11%−3,820−39.5%Reduced
St. Clair Advisors, LLC5,848$524.9K0.15%00.0%Unchanged
Certified Advisory Corp5,849$525.0K0.06%−499−7.9%Reduced
New Covenant Trust Company, N.A.5,884$525.0K0.55%−315−5.1%Reduced
Sanders Morris Harris LLC5,983$525.6K0.08%−83−1.4%Reduced
SeaBridge Investment Advisors LLC5,864$526.4K0.11%−9,359−61.5%Reduced
Vestor Capital, LLC5,873$527.0K0.04%−89−1.5%Reduced
O'Rourke & Company, Inc5,875$527.3K0.26%−201−3.3%Reduced
Steigerwald, Gordon & Koch Inc.5,875$527.3K0.06%+63+1.1%Added
Neumann Capital Management, LLC5,885$528.2K0.18%00.0%Unchanged
Paloma Partners Management Co5,885$528.2K0.10%+5,885New
Fermata Advisors, LLC5,886$528.4K0.10%+985+20.1%Added
Garde Capital, Inc.5,902$529.8K0.03%−158−2.6%Reduced
KDT Advisors, LLC5,926$531.9K0.78%00.0%Unchanged
Robinson Smith Wealth Advisors LLC5,927$532.0K0.45%+440+8.0%Added
Carr Financial Group Corp5,930$532.3K0.17%−2,718−31.4%Reduced
Sage Private Wealth Group, LLC5,933$532.6K0.40%+27+0.5%Added
Moseley Investment Management Inc5,935$532.7K0.21%−444−7.0%Reduced
James J. Burns & Company, LLC5,950$534.1K0.10%−351−5.6%Reduced
Aspire Growth Partners LLC6,752$534.2K0.47%+137+2.1%Added
Tempus Wealth Planning, LLC5,953$534.3K0.16%+170+2.9%Added
Commonwealth Financial Services, LLC5,963$535.3K0.11%−521−8.0%Reduced
Cohen Capital Management, Inc.5,967$535.6K0.09%00.0%Unchanged
TFG Advisers LLC5,968$535.7K0.19%−350−5.5%Reduced
Embree Financial Group5,968$535.7K0.09%+1,617+37.2%Added
Crew Capital Management, Ltd.5,969$535.8K0.44%+28+0.5%Added
American Capital Advisory, LLC5,981$536.9K0.29%−177−2.9%Reduced
Ifrah Financial Services, Inc.5,988$537.4K0.15%−409−6.4%Reduced
Lathrop Investment Management Corp5,995$538.0K0.11%+24+0.4%Added
Beacon Capital Management, LLC6,017$540.1K0.07%+252+4.4%Added
L2 Asset Management, LLC6,020$540.4K0.11%+6,020New
Perkins Coie Trust Co6,021$540.4K0.12%+136+2.3%Added
S.A. Mason LLC6,024$540.7K0.29%+9+0.1%Added
Bangor Savings Bank6,036$541.8K0.05%−237−3.8%Reduced
Compass Wealth Management LLC6,038$542.0K0.14%−177−2.8%Reduced
Nicolet Bankshares Inc6,048$542.9K0.11%00.0%Unchanged
Lester Murray Antman dba SimplyRich6,059$543.0K0.16%00.0%Unchanged
HCR Wealth Advisors6,057$543.7K0.07%−13,639−69.2%Reduced
Eubel Brady & Suttman Asset Management Inc6,066$544.0K0.07%+768+14.5%Added
Olistico Wealth, LLC6,063$544.2K0.34%−141−2.3%Reduced
FourThought Financial Partners, LLC6,092$546.8K0.06%+906+17.5%Added
PCG Asset Management, LLC6,093$546.9K0.51%+30+0.5%Added
Hall Capital Management Co Inc6,097$547.3K0.25%−14,729−70.7%Reduced
Bolthouse Investments, LLC6,119$549.2K0.57%00.0%Unchanged
Roehl & Yi Investment Advisors, LLC6,125$549.7K0.30%+117+1.9%Added
Cottonwood Capital Advisors, LLC6,129$550.1K0.40%00.0%Unchanged
Prelude Capital Management, LLC6,133$550.5K0.06%−232−3.6%Reduced
Ocean Capital Management, LLC6,140$551.1K0.13%+141+2.4%Added
Pines Wealth Management, LLC6,981$551.1K0.25%+154+2.3%Added
Roberts Capital Advisors, LLC6,141$551.2K0.48%+6,141New
First American Trust, FSB6,151$552.1K0.05%+7+0.1%Added
BOK Financial Private Wealth, Inc.6,102$553.1K0.04%−1,671−21.5%Reduced