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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: 11 institutions have reported holding MRK so far. See Q3 2026

Institutional holders
3,855
+95 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
213
1,635 more added
Sold out
118
1,509 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: 2,962 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 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 20263,813$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, 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
Advisor OS, LLC36,859$4.74M0.32%+613+1.7%Added
Brown Shipley& Co Ltd36,729$4.72M2.44%+880+2.5%Added
Prestige Wealth Management Group LLC36,409$4.71M0.86%−685−1.8%Reduced
Keel Point, LLC36,633$4.71M0.28%−2,754−7.0%Reduced
BLB&B Advisors, LLC36,377$4.67M0.17%−1,930−5.0%Reduced
Proficio Capital Partners LLC36,360$4.67M0.17%+17,526+93.1%Added
NorthRock Partners, LLC36,249$4.66M0.07%+1,987+5.8%Added
Manchester Capital Management LLC36,199$4.65M0.61%−55−0.2%Reduced
Insigneo Advisory Services, LLC36,076$4.64M0.17%+20,653+133.9%Added
Lineweaver Wealth Advisors, LLC35,950$4.62M0.55%+2,306+6.9%Added
BFSG, LLC35,943$4.62M0.41%−391−1.1%Reduced
Symphony Financial, Ltd. Co.35,684$4.61M0.50%+471+1.3%Added
Aprio Wealth Management, LLC35,856$4.61M0.23%+125+0.3%Added
Marshall Financial Group LLC35,820$4.60M0.67%+3,378+10.4%Added
Primecap Management Co35,700$4.59M0.00%−200−0.6%Reduced
Boyd Watterson Asset Management LLC35,559$4.57M1.23%00.0%Unchanged
Dorsey & Whitney Trust CO LLC35,490$4.56M0.22%−768−2.1%Reduced
Caldwell Trust Co35,474$4.56M0.37%−1,486−4.0%Reduced
Palisade Asset Management, LLC35,395$4.55M0.42%+196+0.6%Added
Northside Capital Management, LLC35,283$4.53M0.37%−670−1.9%Reduced
Family Legacy, Inc.35,196$4.52M1.21%+80.0%Added
Osprey Private Wealth LLC35,180$4.52M1.17%+1,360+4.0%Added
Opus Investment Management Inc35,000$4.50M2.46%00.0%Unchanged
Ally Financial Inc.35,000$4.50M0.58%+10,000+40.0%Added
Wealthcare Advisory Partners LLC34,872$4.48M0.08%−2,513−6.7%Reduced
Tower Bridge Advisors34,852$4.48M0.40%−399−1.1%Reduced
Magnolia Capital Advisors LLC34,718$4.46M0.77%−86−0.2%Reduced
Jackson Square Capital, LLC34,686$4.46M0.62%−281−0.8%Reduced
Family Management Corp34,626$4.45M0.47%−869−2.4%Reduced
Community Trust & Investment Co34,265$4.40M0.23%−4,216−11.0%Reduced
Frec Markets, Inc.34,217$4.40M0.39%+7,406+27.6%Added
White Pine Capital LLC34,201$4.39M1.04%−749−2.1%Reduced
Berkshire Asset Management LLC34,092$4.38M0.17%−932−2.7%Reduced
Beech Hill Advisors, Inc.34,051$4.38M1.93%+62+0.2%Added
Avidian Wealth Solutions, LLC33,988$4.37M0.12%+3,234+10.5%Added
Visionary Wealth Advisors33,945$4.36M0.17%+165+0.5%Added
Profund Advisors LLC33,549$4.31M0.12%−204−0.6%Reduced
Kovitz Investment Group Partners, LLC33,485$4.30M0.10%−33,273−49.8%Reduced
Washington Trust Co33,197$4.27M0.13%−1,233−3.6%Reduced
WealthPlan Investment Management, LLC33,167$4.26M0.21%−1,826−5.2%Reduced
Westpac Banking Corp33,068$4.25M0.26%−2,751−7.7%Reduced
Brown, Lisle/Cummings, Inc.33,055$4.25M0.95%−18−0.1%Reduced
KCM Capital Inc33,000$4.24M0.69%00.0%Unchanged
Morse Asset Management, Inc32,843$4.22M0.70%+150.0%Added
Lodestone Wealth Management LLC32,793$4.21M1.49%+291+0.9%Added
Holderness Investments Co32,731$4.21M0.70%−359−1.1%Reduced
Shepherd Financial Partners LLC32,703$4.20M0.35%−203−0.6%Reduced
Morningstar Investment Management LLC34,870$4.19M0.26%00.0%Unchanged
Mechanics Bank Trust Department32,592$4.19M0.52%+169+0.5%Added
Money Concepts Capital Corp32,575$4.19M0.19%+13,838+73.9%Added
Wynn Capital, LLC32,539$4.18M1.87%+182+0.6%Added
Lockheed Martin Investment Management Co32,500$4.18M0.17%−56,800−63.6%Reduced
DKRT Investments Corp.32,500$4.18M1.02%00.0%Unchanged
NVWM, LLC32,439$4.17M0.84%−448−1.4%Reduced
Brooks, Moore & Associates, Inc.32,419$4.17M1.87%+1,650+5.4%Added
GSB Wealth Management, LLC32,342$4.16M0.83%−377−1.2%Reduced
Jacobs Levy Equity Management, Inc32,254$4.14M0.01%+13,376+70.9%Added
Carolina Wealth Advisors, LLC32,171$4.13M1.62%−15,954−33.2%Reduced
VestGen Advisors, LLC32,161$4.13M0.12%+1,057+3.4%Added
Pathway Financial Advisers, LLC32,011$4.11M1.04%+521+1.7%Added
Banque Transatlantique SA35,317$4.10M0.09%+1,986+6.0%Added
McMillan Office, Inc.31,930$4.10M0.47%−40−0.1%Reduced
Resonant Capital Advisors, LLC31,697$4.10M0.20%+521+1.7%Added
Kentucky Farm Bureau Mutual Insurance Co31,718$4.08M1.13%00.0%Unchanged
Herold Advisors, Inc.31,620$4.07M0.80%−36−0.1%Reduced
Stolper Co31,675$4.07M1.05%+24,128+319.7%Added
Western Wealth Management, LLC31,663$4.07M0.13%−315−1.0%Reduced
Kingswood Wealth Advisors, LLC31,533$4.05M0.16%+360+1.2%Added
Penobscot Investment Management Company, Inc.31,382$4.03M0.28%−25−0.1%Reduced
R.H. Dinel Investment Counsel, Inc.31,365$4.03M3.10%00.0%Unchanged
Investor's Fiduciary Advisor Network, LLC31,358$4.03M1.37%−1,684−5.1%Reduced
W.G. Shaheen & Associates DBA Whitney & Co31,340$4.03M0.29%−77,810−71.3%Reduced
PFG Advisors31,306$4.02M0.20%+2,242+7.7%Added
Dymon Asia Capital (Singapore) Pte. Ltd.31,173$4.01M0.64%+21,173+211.7%Added
Hudock, Inc.31,152$4.00M0.51%−70.0%Reduced
MainStreet Investment Advisors LLC31,131$4.00M0.54%+386+1.3%Added
Quadrant Private Wealth Management, LLC30,878$3.99M0.89%−49−0.2%Reduced
DT Investment Partners, LLC30,995$3.98M0.30%+334+1.1%Added
Providence Capital Advisors, LLC30,948$3.98M0.60%+4,849+18.6%Added
Kathmere Capital Management, LLC30,944$3.98M0.21%+1,987+6.9%Added
IFP Advisors, Inc30,895$3.97M0.07%+1,202+4.0%Added
South State Corp.30,874$3.97M0.17%+638+2.1%Added
Arvest Investments, Inc.30,803$3.96M0.48%+2,198+7.7%Added
Legato Capital Management LLC30,800$3.96M0.33%−3,124−9.2%Reduced
Independence Bank of Kentucky30,740$3.95M0.45%−4,030−11.6%Reduced
Parcion Private Wealth LLC30,676$3.94M0.22%+613+2.0%Added
Coastline Trust Co30,609$3.93M0.35%−3,174−9.4%Reduced
Alpha Omega Wealth Management LLC30,580$3.93M0.60%−2,163−6.6%Reduced
Albion Financial Group30,544$3.92M0.23%+239+0.8%Added
Conscious Wealth Investments, LLC31,066$3.92M2.02%+31,066New
S-Bank Fund Management Ltd30,426$3.91M0.53%+450+1.5%Added
Belpointe Asset Management LLC30,259$3.89M0.13%+3,591+13.5%Added
Bridgewater Associates, LP30,254$3.89M0.02%+30,254New
EagleClaw Capital Managment, LLC30,088$3.87M0.52%−1,550−4.9%Reduced
Cito Capital Group, LLC29,864$3.86M1.04%00.0%Unchanged
Allegheny Financial Group LTD30,018$3.86M0.41%+307+1.0%Added
PKO Investment Management Joint-Stock Co30,000$3.85M0.28%+1,000+3.4%Added
Capital Investment Advisory Services, LLC29,988$3.85M0.24%+1,464+5.1%Added
Dean Investment Associates, LLC29,970$3.85M0.51%−2,007−6.3%Reduced
Shoker Investment Counsel, Inc.29,948$3.85M0.97%+1,376+4.8%Added