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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
Tobam57,588$5.17M2.21%−7,566−11.6%Reduced
North Star Investment Management Corp.57,576$5.17M0.38%−1,064−1.8%Reduced
Morgan Dempsey Capital Management LLC57,056$5.17M2.16%−4,121−6.7%Reduced
Buckingham Strategic Partners57,510$5.16M0.08%+12,616+28.1%Added
Primecap Management Co57,500$5.16M0.00%−2,900−4.8%Reduced
J. W. Coons Advisors, LLC57,390$5.15M1.36%+85+0.1%Added
Exchange Capital Management, Inc.57,322$5.15M0.83%−308−0.5%Reduced
China Universal Asset Management Co., Ltd.56,566$5.12M0.48%+6,850+13.8%Added
Rockline Wealth Management, LLC56,857$5.10M1.42%+963+1.7%Added
First National Bank of Omaha56,747$5.09M0.35%−38,301−40.3%Reduced
Ninety One UK Ltd56,695$5.09M0.01%+11,708+26.0%Added
Covenant Asset Management, LLC56,518$5.07M1.28%−1,325−2.3%Reduced
Bridges Investment Management Inc56,446$5.07M0.07%−2,743−4.6%Reduced
Eisler Capital Management Ltd.56,110$5.03M0.15%−99,084−63.8%Reduced
BigSur Wealth Management LLC55,410$5.02M1.36%−300−0.5%Reduced
Resources Investment Advisors, LLC.55,900$5.02M0.06%−4,946−8.1%Reduced
Principal Securities, Inc.50,120$4.99M0.11%+50+0.1%Added
Inscription Capital, LLC37,647$4.97M0.83%+37,647New
Centre Asset Management, LLC55,132$4.95M1.27%+55,132New
V-Square Quantitative Management LLC55,064$4.94M0.72%+2,072+3.9%Added
Unigestion Holding SA54,996$4.94M0.29%+30,778+127.1%Added
Resources Management Corp54,944$4.93M0.69%+7,617+16.1%Added
Wendell David Associates Inc54,909$4.93M0.49%+4,740+9.4%Added
Monte Financial Group, LLC63,123$4.92M2.16%+8,505+15.6%Added
Oak Harvest Investment Services54,728$4.91M0.69%+5,999+12.3%Added
Plimoth Trust Co LLC54,681$4.91M1.28%+6,535+13.6%Added
Searle & Co.54,674$4.91M1.40%+809+1.5%Added
Parallel Advisors, LLC54,626$4.90M0.11%−4,299−7.3%Reduced
Ascent Group, LLC54,516$4.89M0.21%+11,506+26.8%Added
River Wealth Advisors LLC54,165$4.86M0.68%+7,648+16.4%Added
Equitable Trust Co53,982$4.85M0.27%−2,321−4.1%Reduced
Sound View Wealth Advisors Group, LLC53,957$4.84M0.40%+1,967+3.8%Added
KMG Fiduciary Partners, LLC53,952$4.84M0.40%+3,739+7.4%Added
Northeast Investment Management53,851$4.83M0.23%−10,705−16.6%Reduced
BKD Wealth Advisors, LLC53,834$4.83M0.12%+3,014+5.9%Added
Personal Cfo Solutions, LLC53,822$4.83M0.98%−406−0.7%Reduced
Meridian Wealth Advisors, LLC53,810$4.83M0.82%+3,121+6.2%Added
GWN Securities Inc.63,715$4.80M0.27%+49,137+337.1%Added
Trajan Wealth LLC53,320$4.79M0.26%+6,451+13.8%Added
Mairs & Power Inc53,159$4.77M0.05%−741−1.4%Reduced
Philadelphia Trust Co52,966$4.75M0.41%−4,317−7.5%Reduced
Pinnacle Wealth Management Advisory Group, LLC52,961$4.75M0.44%−1,861−3.4%Reduced
PKO Investment Management Joint-Stock Co52,892$4.75M0.54%+10,216+23.9%Added
Jackson Hole Capital Partners, LLC52,873$4.75M0.94%+2,111+4.2%Added
New Hampshire Trust52,803$4.74M1.08%+3,427+6.9%Added
Flagship Harbor Advisors, LLC52,697$4.73M0.25%+5,099+10.7%Added
Keel Point, LLC52,330$4.70M0.36%+11,303+27.6%Added
Sentry LLC52,287$4.69M0.91%+2,930+5.9%Added
Cypress Capital Group51,987$4.67M0.61%+5,207+11.1%Added
Ronald Blue Trust, Inc.51,935$4.66M0.06%+3,596+7.4%Added
Coastal Bridge Advisors, LLC51,837$4.65M0.67%+41,410+397.1%Added
Town & Country Bank & Trust CO dba First Bankers Trust CO51,611$4.63M1.83%−5,263−9.3%Reduced
Burney Co51,414$4.61M0.17%+3,485+7.3%Added
Alley Investment Management Company, LLC51,258$4.60M0.58%−53,729−51.2%Reduced
Park National Corp51,233$4.60M0.17%−2,432−4.5%Reduced
tru Independence LLC50,977$4.58M1.42%+2,374+4.9%Added
Signaturefd, LLC50,949$4.57M0.09%−2,398−4.5%Reduced
APG Asset Management US Inc.52,382$4.56M0.03%00.0%Unchanged
GQG Partners LLC50,782$4.56M0.01%−7,151−12.3%Reduced
HBK Sorce Advisory LLC50,728$4.55M0.13%+1,783+3.6%Added
Boston Family Office LLC50,485$4.53M0.32%−235−0.5%Reduced
Excalibur Management Corp50,427$4.53M1.78%+385+0.8%Added
Martin Investment Management, LLC50,091$4.50M1.13%−49−0.1%Reduced
Hallmark Capital Management Inc49,835$4.47M0.34%+10,601+27.0%Added
Bailard, Inc.49,749$4.47M0.12%+2,572+5.5%Added
Hohimer Wealth Management, LLC49,604$4.45M0.87%+41,923+545.8%Added
Caldwell Trust Co49,366$4.43M0.48%−6,356−11.4%Reduced
Secure Asset Management, LLC49,265$4.42M0.89%+20,818+73.2%Added
Wealthspire Advisors, LLC49,095$4.41M0.03%−5,470−10.0%Reduced
Meeder Advisory Services, Inc.49,026$4.40M0.26%+2,539+5.5%Added
Thematics Asset Management49,015$4.40M0.22%−24,642−33.5%Reduced
Pekin Hardy Strauss, Inc.48,956$4.39M0.53%−1,402−2.8%Reduced
Pine Valley Investments Ltd Liability Co48,785$4.39M0.28%−1,297−2.6%Reduced
Ipswich Investment Management Co., Inc.48,920$4.39M1.09%−2,858−5.5%Reduced
Glassy Mountain Advisors, Inc.48,694$4.37M1.55%−93−0.2%Reduced
Letson Investment Management, Inc.48,647$4.37M1.76%+231+0.5%Added
Shorepoint Capital Partners LLC48,582$4.36M0.99%+2,284+4.9%Added
Altrius Capital Management Inc48,539$4.36M1.06%+3,233+7.1%Added
Mesirow Financial Investment Management, Inc.48,493$4.35M0.08%+118+0.2%Added
GAMMA Investing LLC48,267$4.33M0.33%+5,337+12.4%Added
Pittenger & Anderson Inc48,240$4.33M0.16%+875+1.8%Added
Asset Advisors Investment Management, LLC48,212$4.33M0.45%−8,365−14.8%Reduced
Modera Wealth Management, LLC48,165$4.32M0.06%−4,493−8.5%Reduced
Oddo BHF Asset Management SAS47,969$4.31M0.18%−40,456−45.8%Reduced
Leonteq Securities AG47,870$4.29M0.33%+13,857+40.7%Added
Walled Lake Planning & Wealth Management, LLC47,765$4.29M1.52%+1,125+2.4%Added
Patrick M Sweeney & Associates, Inc47,692$4.28M3.20%+20.0%Added
Moody Lynn & Lieberson, LLC47,671$4.28M0.27%−26,544−35.8%Reduced
Brooks, Moore & Associates, Inc.47,581$4.27M2.41%−175−0.4%Reduced
Global Wealth Management Investment Advisory, Inc.47,256$4.24M0.85%+2,199+4.9%Added
Chemung Canal Trust Co47,192$4.24M0.93%−8,812−15.7%Reduced
R.H. Dinel Investment Counsel, Inc.47,142$4.23M2.89%00.0%Unchanged
Prosperity Consulting Group, LLC47,141$4.23M0.33%−1,827−3.7%Reduced
Stonebridge Financial Group, LLC47,004$4.22M0.45%+6,025+14.7%Added
Newman Dignan & Sheerar, Inc.46,985$4.22M1.15%−4,035−7.9%Reduced
Machina Capital S.A.S.46,952$4.21M1.25%+26,542+130.0%Added
Oakworth Capital, Inc.46,754$4.20M0.29%+23,622+102.1%Added
Community Bank & Trust, Waco, Texas46,688$4.19M0.99%+26+0.1%Added
Edgemoor Investment Advisors, Inc.46,665$4.19M0.39%−2,268−4.6%Reduced
Univest Financial Corp46,476$4.17M0.27%+401+0.9%Added