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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, Q3 2025

Institutional positions in Merck & Co., Inc. as of Sep 30, 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
3,320
+42 vs. Q2 2025
Shares held
1.90B
−25.7M (−1.3%) vs. Q2 2025
Total value
$159.8B
+$6.99B (+4.6%) vs. Q2 2025
New holders
191
1,361 more added
Sold out
149
1,428 more reduced

60 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2025: 3,320 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 heldQ3 2025: $159.8B
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, Q3 2025

Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q2 2025.

Institutions holding MRK in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Rede Wealth, LLC5,269$446.9K0.35%+5,269New
Sutton Place Investors LLC5,326$447.0K0.25%−383−6.7%Reduced
Good Steward Wealth Advisors,LLC5,340$448.2K0.31%−627−10.5%Reduced
Range Financial Group LLC5,340$448.2K0.16%+266+5.2%Added
Sound Income Strategies, LLC5,137$449.5K0.02%−144−2.7%Reduced
Steadtrust LLC5,369$450.6K0.31%−147−2.7%Reduced
Crew Capital Management, Ltd.5,391$452.5K0.30%−325−5.7%Reduced
Annis Gardner Whiting Capital Advisors, LLC5,364$452.5K0.09%+1,166+27.8%Added
Hazlett, Burt & Watson, Inc.5,394$453.0K0.16%−214−3.8%Reduced
Raleigh Capital Management Inc.5,401$453.3K0.17%−734−12.0%Reduced
Steinberganna Wealth Management5,407$453.8K0.21%+5,407New
Liberty Capital Management, Inc.5,409$454.0K0.09%+200+3.8%Added
Floyd Financial Group LLC5,298$454.0K0.34%+409+8.4%Added
Penobscot Wealth Management5,417$454.6K0.15%−41−0.8%Reduced
Terry L. Blaker5,419$454.8K0.02%00.0%Unchanged
Drive Wealth Management, LLC5,379$455.7K0.10%+1,281+31.3%Added
Indiana Trust & Investment Management CO5,434$456.1K0.14%+123+2.3%Added
Capital City Trust Co5,436$456.2K0.11%−825−13.2%Reduced
Embree Financial Group5,449$457.3K0.06%−222−3.9%Reduced
Covestor Ltd5,450$458.0K0.25%+423+8.4%Added
Baader Bank INC5,727$458.5K0.04%−673−10.5%Reduced
ABLE Financial Group, LLC5,467$458.8K0.10%−2,187−28.6%Reduced
Henshaw Capital LLC5,500$461.6K0.02%00.0%Unchanged
Denali Advisors LLC5,500$461.6K0.05%+5,500New
James J. Burns & Company, LLC5,503$461.9K0.07%−143−2.5%Reduced
Zevin Asset Management LLC5,506$462.0K0.07%00.0%Unchanged
Campbell Deegan Wealth Management, LLC5,506$462.1K0.41%00.0%Unchanged
Ramiah Investment Group5,517$463.0K0.41%+246+4.7%Added
Michael B. Yongue5,522$463.5K0.33%−334−5.7%Reduced
Hill Investment Group Partners, LLC5,524$463.6K0.06%00.0%Unchanged
Ironwood Financial, llc5,557$466.4K0.08%−32−0.6%Reduced
Congress Park Capital LLC5,560$466.7K0.15%00.0%Unchanged
Encompass More Asset Management5,567$467.2K0.09%+958+20.8%Added
Baldwin Investment Management, LLC5,570$467.5K0.05%00.0%Unchanged
Strathmore Capital Advisors, Inc.5,575$467.9K0.19%−256−4.4%Reduced
Net Worth Advisory Group5,580$468.3K0.14%−933−14.3%Reduced
Northwest Wealth Management, LLC5,585$468.8K0.08%+2,514+81.9%Added
Vicus Capital5,608$470.6K0.04%−618−9.9%Reduced
Trail Ridge Investment Advisors, LLC5,608$470.7K0.21%+10+0.2%Added
Lionshead Wealth Management, LLC5,611$470.9K0.37%+8+0.1%Added
Shayne & Co., LLC5,611$470.9K0.15%00.0%Unchanged
Argonautica Private Wealth Management, Inc5,628$472.4K0.14%+31+0.6%Added
Bright Futures Wealth Management, LLC.5,628$472.4K0.37%+5,628New
ORG Partners LLC5,735$472.9K0.09%+3,731+186.2%Added
Capital Group Private Client Services, Inc.5,641$473.4K0.01%−90,339−94.1%Reduced
Atticus Wealth Management, LLC5,647$474.0K0.12%−493−8.0%Reduced
MEMBERS Trust Co5,668$475.7K0.02%−44−0.8%Reduced
Dempze Nancy E5,680$476.7K0.26%−1,535−21.3%Reduced
K2 Principal Fund, L.P.5,684$477.1K0.05%00.0%Unchanged
JNBA Financial Advisors5,695$478.0K0.04%00.0%Unchanged
FourThought Financial Partners, LLC5,696$478.0K0.04%−903−13.7%Reduced
Cove Private Wealth, LLC5,697$478.1K0.15%00.0%Unchanged
Summit Financial Strategies, Inc.5,697$478.2K0.04%−76−1.3%Reduced
MFA Wealth Services5,701$478.5K0.33%+168+3.0%Added
Cortland Associates Inc5,703$479.0K0.06%+40+0.7%Added
Beverly Hills Private Wealth, LLC5,722$480.2K0.08%−170−2.9%Reduced
Foundation Wealth Management, LLC5,739$481.7K0.19%−15−0.3%Reduced
My Personal CFO, LLC5,739$481.7K0.19%+5,739New
Boltwood Capital Management5,753$482.8K0.13%+25+0.4%Added
1858 Wealth Management, LLC5,759$483.4K0.34%−1,082−15.8%Reduced
Cynosure Management, LLC5,759$483.4K0.05%00.0%Unchanged
First Heartland Consultants, Inc.5,761$483.5K0.04%+62+1.1%Added
Delta Investment Management, LLC5,763$483.7K0.09%−72−1.2%Reduced
New Covenant Trust Company, N.A.5,766$483.9K0.45%−62−1.1%Reduced
Vestor Capital, LLC5,761$484.0K0.03%+5,238+1,001.5%Added
Compass Wealth Management LLC5,771$484.3K0.11%+687+13.5%Added
TFR Capital, LLC.5,777$484.9K0.16%−15,693−73.1%Reduced
Cohen Investment Advisors LLC5,778$484.9K0.24%+826+16.7%Added
Farmers Trust Co5,781$485.2K0.08%+1,331+29.9%Added
Bangor Savings Bank5,788$485.8K0.04%−219−3.6%Reduced
Second Line Capital, LLC5,749$487.3K0.10%−329−5.4%Reduced
Lathrop Investment Management Corp5,813$488.0K0.09%−77−1.3%Reduced
Trifecta Capital Advisors, LLC5,815$488.1K0.07%−2,582−30.7%Reduced
Phoenix Wealth Advisors5,820$488.5K0.19%−216−3.6%Reduced
Townsend Asset Management Corp5,835$489.7K0.17%−575−9.0%Reduced
Riversedge Advisors, LLC5,839$490.1K0.08%+5,839New
Planned Solutions, Inc.5,840$490.2K0.17%+3+0.1%Added
Demars Financial Group, LLC5,843$490.4K0.17%−551−8.6%Reduced
PCG Asset Management, LLC5,847$490.7K0.39%−160−2.7%Reduced
St. Clair Advisors, LLC5,868$492.5K0.13%+20+0.3%Added
Ignite Planners, LLC5,868$492.5K0.08%+134+2.3%Added
Select Asset Management & Trust5,876$493.0K0.15%00.0%Unchanged
Tower Wealth Partners, Inc.5,880$493.5K0.27%+255+4.5%Added
Simon Quick Advisors, LLC5,880$493.5K0.02%+602+11.4%Added
Cooper Financial Group5,891$494.4K0.05%+1,253+27.0%Added
Canton Hathaway, LLC5,898$495.0K0.10%00.0%Unchanged
Nadler Financial Group, Inc.5,905$495.6K0.05%+111+1.9%Added
Ocean Capital Management, LLC5,916$496.5K0.10%−31−0.5%Reduced
Ifrah Financial Services, Inc.5,920$496.9K0.13%−17−0.3%Reduced
KDT Advisors, LLC5,926$497.4K0.73%00.0%Unchanged
Monticello Wealth Management, LLC5,903$497.5K0.03%+1,333+29.2%Added
Garner Asset Management Corp5,929$497.7K0.20%+450+8.2%Added
Mattern Wealth Management LLC5,933$498.0K0.10%−1,600−21.2%Reduced
Eagle Wealth Strategies LLC5,946$499.1K0.25%+148+2.6%Added
Cottonwood Capital Advisors, LLC5,954$499.7K0.36%−221−3.6%Reduced
Midland Wealth Advisors LLC5,955$499.8K0.03%−1,290−17.8%Reduced
Facet Wealth, Inc.5,966$500.7K0.01%+934+18.6%Added
Cohen Capital Management, Inc.5,967$500.8K0.08%00.0%Unchanged
Weatherly Asset Management L. P.5,920$501.0K0.04%−275−4.4%Reduced
Alpha Family Trust5,975$501.5K0.24%00.0%Unchanged