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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
CFC Planning Co LLC23,994$3.08M1.82%−1,121−4.5%Reduced
MCF Advisors LLC23,882$3.08M0.11%−427−1.8%Reduced
Hayek Kallen Investment Management24,059$3.09M0.94%+347+1.5%Added
Counterweight Ventures, LLC24,081$3.09M1.54%−1,005−4.0%Reduced
Oakmont Investment Advisors, Inc.24,110$3.10M2.15%+101+0.4%Added
Naviter Wealth, LLC24,004$3.10M0.28%+2,375+11.0%Added
Northstar Group, Inc.24,202$3.11M0.40%−44−0.2%Reduced
AlTi Global, Inc.24,188$3.13M0.06%+674+2.9%Added
3Chopt Investment Partners, LLC24,198$3.13M0.59%+2,004+9.0%Added
Marino, Stram & Associates LLC24,413$3.14M0.50%−553−2.2%Reduced
Fiduciary Group LLC24,429$3.14M0.25%+385+1.6%Added
Thompson Investment Management, Inc.24,470$3.14M0.36%+17+0.1%Added
Argent Advisors, Inc.24,547$3.15M0.79%−211−0.9%Reduced
Matrix Trust Co24,606$3.16M0.46%−1,458−5.6%Reduced
Univest Financial Corp24,610$3.16M0.16%−429−1.7%Reduced
Pekin Hardy Strauss, Inc.24,621$3.16M0.28%−84−0.3%Reduced
Personal Cfo Solutions, LLC24,511$3.17M0.46%+607+2.5%Added
P.A.W. Capital Corp24,715$3.18M2.43%−950−3.7%Reduced
Howe & Rusling Inc24,744$3.18M0.18%+1,035+4.4%Added
Old Point Trust & Financial Services N A24,771$3.18M0.97%+1,313+5.6%Added
International Assets Investment Management, LLC25,392$3.18M0.19%−1,606−5.9%Reduced
Stratos Wealth Advisors, LLC24,837$3.19M0.18%+463+1.9%Added
Ellis Investment Partners, LLC24,852$3.19M0.48%−250−1.0%Reduced
Cypress Capital, LLC24,880$3.20M0.87%−751−2.9%Reduced
Curbstone Financial Management Corp24,914$3.20M0.55%+850+3.5%Added
McKinley Carter Wealth Services, Inc.24,973$3.21M0.17%+227+0.9%Added
Jain Global LLC24,975$3.21M0.04%−20,697−45.3%Reduced
Truvestments Capital LLC25,027$3.22M0.48%+811+3.3%Added
Linden Thomas Advisory Services, LLC25,106$3.23M0.26%+582+2.4%Added
Parkside Financial Bank & Trust25,116$3.23M0.22%−709−2.7%Reduced
SageView Advisory Group, LLC25,250$3.24M0.11%+1,929+8.3%Added
SevenBridge Financial Group, LLC25,263$3.25M0.48%−1,640−6.1%Reduced
Huber Capital Management LLC25,293$3.25M0.48%00.0%Unchanged
Beacon Investment Advisory Services, Inc.25,298$3.25M0.12%−1,286−4.8%Reduced
McAdam, LLC25,372$3.26M0.13%+1,376+5.7%Added
AIMZ Investment Advisors, LLC25,475$3.27M0.90%+151+0.6%Added
Sterling Investment Advisors, Ltd.25,499$3.28M0.55%−554−2.1%Reduced
Aries Wealth Management25,514$3.28M0.64%−18−0.1%Reduced
Cornerstone Select Advisors, LLC25,523$3.28M1.38%+2,762+12.1%Added
Mitchell McLeod Pugh & Williams Inc25,603$3.29M0.40%+2,213+9.5%Added
BDF-Gestion42,451$3.29M0.98%−4,773−10.1%Reduced
Meridian Wealth Advisors, LLC25,697$3.30M0.38%−20.0%Reduced
First National Bank & Trust Co of Newtown25,369$3.30M0.67%−809−3.1%Reduced
LMG Wealth Partners, LLC25,729$3.31M0.53%+642+2.6%Added
Silvant Capital Management LLC25,811$3.32M0.10%00.0%Unchanged
Sargent Investment Group, LLC25,863$3.32M0.40%+264+1.0%Added
Parr McKnight Wealth Management Group, LLC25,951$3.33M0.40%+1,220+4.9%Added
Armis Advisers, LLC26,444$3.35M0.31%+329+1.3%Added
First Financial Bank - Trust Division26,128$3.36M0.24%+47+0.2%Added
Nilsine Partners, LLC26,144$3.36M0.23%−334−1.3%Reduced
Burling Wealth Partners, LLC26,244$3.37M0.49%−719−2.7%Reduced
Charter Research & Investment Group, Inc.26,258$3.37M2.05%00.0%Unchanged
Wellington Grp LLC26,263$3.37M0.89%−19−0.1%Reduced
LCNB Corp26,283$3.38M1.04%−889−3.3%Reduced
Little House Capital LLC26,318$3.38M0.76%+842+3.3%Added
Infrastructure Capital Advisors, LLC26,324$3.38M0.26%+4,347+19.8%Added
Regal Investment Advisors LLC26,367$3.39M0.18%−493−1.8%Reduced
Patten Group, Inc.26,376$3.39M0.53%−940−3.4%Reduced
KMG Fiduciary Partners, LLC26,379$3.39M0.31%−26,888−50.5%Reduced
Windward Capital Management Co26,382$3.39M0.26%+290+1.1%Added
ZWJ Investment Counsel Inc26,437$3.40M0.11%+306+1.2%Added
Red Spruce Capital, LLC26,440$3.40M1.18%+347+1.3%Added
Aaron Wealth Advisors26,456$3.40M0.17%−733−2.7%Reduced
EverSource Wealth Advisors, LLC26,464$3.40M0.11%−4,568−14.7%Reduced
Inscription Capital, LLC26,514$3.41M0.30%+2,164+8.9%Added
Bailard, Inc.26,669$3.43M0.07%+2,160+8.8%Added
Mogy Joel R Investment Counsel Inc26,683$3.43M0.20%00.0%Unchanged
CFS Investment Advisory Services, LLC26,467$3.43M0.23%−130.0%Reduced
Blue Fin Capital, Inc.26,735$3.44M0.50%+110+0.4%Added
Foundations Investment Advisors, LLC26,833$3.45M0.04%+6,533+32.2%Added
Main Street Financial Solutions, LLC26,862$3.45M0.22%+272+1.0%Added
Valmark Advisers, Inc.26,899$3.46M0.04%−1,442−5.1%Reduced
Victrix Investment Advisors26,958$3.46M1.45%+2,244+9.1%Added
American National Bank26,998$3.47M0.30%00.0%Unchanged
TRUE Private Wealth Advisors27,029$3.47M0.30%−1,368−4.8%Reduced
William B. Walkup & Associates, Inc.27,033$3.47M1.67%+316+1.2%Added
HBW Advisory Services LLC27,037$3.47M0.31%+127+0.5%Added
Chicago Capital, LLC27,111$3.48M0.08%+55+0.2%Added
Freestone Grove Partners LP27,158$3.49M0.02%+27,158New
Prosperity Consulting Group, LLC27,182$3.49M0.13%+1,550+6.0%Added
Wedmont Private Capital28,290$3.49M0.10%+2,429+9.4%Added
Pettyjohn, Wood & White, Inc27,200$3.50M0.51%−395−1.4%Reduced
Essex LLC27,256$3.50M0.53%+617+2.3%Added
New England Research & Management, Inc.27,279$3.51M1.36%+750+2.8%Added
Waterloo Capital, L.P.27,308$3.51M0.20%+238+0.9%Added
Stelac Advisory Services LLC27,275$3.51M0.65%−10,750−28.3%Reduced
Ssa Swiss Advisors AG27,275$3.51M1.32%−10,750−28.3%Reduced
Archford Capital Strategies, LLC27,354$3.52M0.36%−6,991−20.4%Reduced
Wright Investors Service Inc27,422$3.52M0.96%−506−1.8%Reduced
Integrated Investment Consultants, LLC27,502$3.53M0.70%−49−0.2%Reduced
DoubleLine ETF Adviser LP27,527$3.54M1.46%−3,383−10.9%Reduced
Emerald Investment Advisers, LLC27,592$3.55M0.24%+788+2.9%Added
Capital International Sarl27,611$3.55M0.05%+27,611New
Trust Asset Management LLC27,624$3.55M0.22%−448−1.6%Reduced
Garrett Investment Advisors LLC27,689$3.56M0.26%−654−2.3%Reduced
Employees Retirement System of Texas27,704$3.56M0.03%00.0%Unchanged
Castle Rock Wealth Management, LLC28,419$3.56M0.70%+590+2.1%Added
Harbor Capital Advisors, Inc.27,785$3.57M0.24%−784−2.7%Reduced
WESPAC Advisors, LLC27,798$3.57M1.74%00.0%Unchanged
Sax Wealth Advisors, LLC29,762$3.58M0.15%+2,034+7.3%Added