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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, Q4 2021

Institutional positions in Merck & Co., Inc. as of Dec 31, 2021. 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
2,910
+294 vs. Q3 2021
Shares held
1.85B
+9.41M (+0.5%) vs. Q3 2021
Total value
$142.2B
+$3.54B (+2.6%) vs. Q3 2021
New holders
388
1,257 more added
Sold out
94
961 more reduced

42 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2021: 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 holdersQ4 2021: 2,910 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 heldQ4 2021: $142.2B
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, Q4 2021

Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q3 2021.

Institutions holding MRK in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Camber Capital Management LP2,500,000$191.6M7.39%+1,000,000+66.7%Added
Neuberger Berman Group LLC2,527,148$190.9M0.15%+1,995,842+375.6%Added
Employees Provident Fund Board2,436,348$186.7M3.08%−186,980−7.1%Reduced
Allspring Global Investments Holdings, LLC2,398,083$183.8M0.20%+2,398,083New
Mitsubishi UFJ Trust & Banking Corp2,381,012$182.5M0.38%−51,189−2.1%Reduced
First Republic Investment Management, Inc.2,379,135$182.3M0.39%+599,176+33.7%Added
Thrivent Financial for Lutherans2,373,956$182.0M0.35%+321,589+15.7%Added
State of Wisconsin Investment Board2,334,208$178.9M0.35%+19,679+0.9%Added
Cullen Capital Management LLC2,331,485$178.7M1.67%−22,815−1.0%Reduced
Parnassus Investments2,306,548$176.8M0.34%+349,615+17.9%Added
Thornburg Investment Management Inc2,291,893$175.7M2.06%+66,304+3.0%Added
Citadel Advisors LLC2,217,206$169.9M0.18%−871,326−28.2%Reduced
AXA S.A.2,444,482$166.7M0.43%+5,234+0.2%Added
Susquehanna International Group, LLP2,151,609$164.9M0.25%−2,301,093−51.7%Reduced
Mackenzie Financial Corp2,145,707$164.4M0.22%+160,345+8.1%Added
Smead Capital Management, Inc.2,131,511$163.4M4.25%+397,372+22.9%Added
Aviva PLC2,110,672$161.8M0.68%+213,185+11.2%Added
M&T Bank Corp2,103,878$161.2M0.68%+11,549+0.6%Added
Public Employees Retirement Association of Colorado2,075,078$159.0M0.65%−31,413−1.5%Reduced
NN Investment Partners Holdings N.V.2,050,427$157.1M0.79%+333,005+19.4%Added
Capital Research Global Investors2,035,947$156.0M0.03%−275,548−11.9%Reduced
STRS Ohio2,022,823$155.0M0.54%−172,996−7.9%Reduced
Acadian Asset Management LLC2,005,058$153.6M0.57%+63,326+3.3%Added
Brandywine Global Investment Management, LLC1,998,147$153.1M1.09%+1,962,547+5,512.8%Added
LPL Financial LLC1,989,805$152.5M0.13%+75,918+4.0%Added
Antipodes Partners Ltd1,965,468$150.6M5.41%+62,956+3.3%Added
Korea Investment CORP1,962,598$150.4M0.39%−515,621−20.8%Reduced
Boston Partners1,942,780$148.9M0.18%−846,752−30.4%Reduced
Mn Services Vermogensbeheer B.V.1,931,199$148.0M0.87%+42,400+2.2%Added
US Bancorp1,910,708$146.4M0.23%+7,428+0.4%Added
Man Group plc1,906,168$146.1M0.47%+978,320+105.4%Added
Shapiro Capital Management LLC1,880,216$144.1M2.63%+421,118+28.9%Added
SRB Corp1,844,014$141.3M7.38%00.0%Unchanged
Eagle Asset Management Inc1,816,199$140.1M0.61%+92,031+5.3%Added
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main1,803,801$138.6M0.20%−856,449−32.2%Reduced
OrbiMed Advisors LLC1,779,300$136.4M1.77%−1,953,100−52.3%Reduced
Adage Capital Partners GP, L.L.C.1,761,676$135.0M0.24%−39,430−2.2%Reduced
AMF Pensionsforsakring AB1,727,563$132.7M0.91%−214,366−11.0%Reduced
Retirement Systems of Alabama1,710,066$131.1M0.46%−145,517−7.8%Reduced
Lazard Freres Gestion S.A.S.1,712,784$126.5M3.42%+9,180+0.5%Added
KBC Group NV1,641,558$125.8M0.41%+262,944+19.1%Added
Sound Shore Management Inc1,633,518$125.2M3.47%−38,280−2.3%Reduced
Janney Montgomery Scott LLC1,616,336$123.9M0.48%+18,166+1.1%Added
Chevy Chase Trust Holdings, Inc.1,581,118$121.2M0.39%−40,093−2.5%Reduced
Public Employees Retirement System of Ohio1,570,002$120.3M0.40%−35,212−2.2%Reduced
Storebrand Asset Management AS1,555,974$119.2M0.53%+47,439+3.1%Added
Pictet Asset Management SA1,548,216$118.7M0.12%−141,118−8.4%Reduced
Regions Financial Corp1,499,914$115.0M0.90%−3,284−0.2%Reduced
King Luther Capital Management Corp1,491,178$114.3M0.52%−46,421−3.0%Reduced
State of New Jersey Common Pension Fund D1,487,430$114.0M0.33%−2,378−0.2%Reduced
Keybank National Association1,473,781$113.0M0.45%−233,680−13.7%Reduced
Brandes Investment Partners, LP1,457,931$111.7M2.44%+9,377+0.6%Added
Asset Management One Co.,Ltd.1,449,822$111.5M0.39%+36,854+2.6%Added
Commonwealth Equity Services, LLC1,444,474$110.7M0.25%+74,728+5.5%Added
Ensign Peak Advisors, Inc1,426,099$109.3M0.21%−1,315,527−48.0%Reduced
Mariner, LLC1,424,719$109.2M0.46%+179,720+14.4%Added
Railway Pension Investments Ltd1,418,709$108.7M0.81%+647,200+83.9%Added
Caisse de Depot Et Placement du Quebec1,370,273$105.0M0.23%−154,027−10.1%Reduced
Bessemer Group Inc1,328,547$101.8M0.20%−279,784−17.4%Reduced
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.1,314,026$101.0M0.40%+167,387+14.6%Added
Crawford Investment Counsel Inc1,315,173$100.8M1.91%−24,792−1.9%Reduced
BNP Paribas Arbitrage, SA1,308,118$100.3M0.24%−327,203−20.0%Reduced
Marathon Asset Mgmt Ltd1,282,819$99.2M1.23%−857,683−40.1%Reduced
Standard Life Aberdeen plc1,266,230$97.0M0.21%−266,709−17.4%Reduced
State of Tennessee, Treasury Department1,229,184$94.2M0.35%+801,354+187.3%Added
Connor, Clark & Lunn Investment Management Ltd.1,203,796$92.3M0.45%+77,005+6.8%Added
Factory Mutual Insurance Co1,180,424$91.7M1.32%−185,967−13.6%Reduced
Skandinaviska Enskilda Banken AB (publ)1,164,951$89.9M0.46%+518,657+80.3%Added
Artisan Partners Limited Partnership1,159,266$88.8M0.11%−6,708−0.6%Reduced
Treasurer of the State of North Carolina1,120,939$85.9M0.45%+13,823+1.2%Added
Virginia Retirement Systems Et Al1,107,394$84.9M0.78%+150,000+15.7%Added
BNP PARIBAS ASSET MANAGEMENT Holding S.A.1,096,330$84.0M0.28%+213,022+24.1%Added
Teacher Retirement System of Texas1,089,620$83.5M0.37%+23,377+2.2%Added
Millennium Management LLC1,048,499$80.4M0.09%+64,223+6.5%Added
Advisor Group Holdings, Inc.1,024,426$78.5M0.15%+80,489+8.5%Added
CIBC Private Wealth Group, LLC1,019,332$78.1M0.16%+27,719+2.8%Added
Natixis Advisors, L.P.1,010,111$77.4M0.30%+137,380+15.7%Added
Mirae Asset Global Investments Co., Ltd.996,099$76.7M0.16%−9,563−1.0%Reduced
Old Republic International Corporation996,500$76.4M1.45%00.0%Unchanged
CIBC World Markets Corp953,771$73.1M0.39%+192,342+25.3%Added
Jupiter Asset Management Ltd946,367$73.0M0.80%+910,200+2,516.7%Added
Handelsbanken Fonder AB937,400$71.8M0.35%−268,402−22.3%Reduced
Martingale Asset Management L P932,739$71.5M0.92%−58,955−5.9%Reduced
Commerce Bank925,425$70.9M0.46%+13,181+1.4%Added
National Bank of Canada919,355$70.5M0.30%+919,355New
Guggenheim Capital LLC916,392$70.2M0.37%+39,983+4.6%Added
Zacks Investment Management909,658$69.7M0.98%+259,858+40.0%Added
Fort Washington Investment Advisors Inc905,881$69.4M0.42%+152,749+20.3%Added
Haverford Trust Co903,611$69.3M0.75%+28,248+3.2%Added
Tocqueville Asset Management L.P.902,606$69.2M0.95%−22,635−2.4%Reduced
Atalanta Sosnoff Capital, LLC885,735$67.9M1.46%+401,858+83.0%Added
Royal London Asset Management Ltd878,952$67.4M0.25%−27,826−3.1%Reduced
SEI Investments Co859,005$65.8M0.12%+39,756+4.9%Added
Glenmede Trust Co NA855,434$65.6M0.31%+32,545+4.0%Added
Nisa Investment Advisors, LLC791,010$64.5M0.48%−13,334−1.7%Reduced
ProShare Advisors LLC818,801$62.8M0.12%+186,485+29.5%Added
Boston Trust Walden Corp812,852$62.3M0.50%−36,715−4.3%Reduced
Fifth Third Bancorp803,931$61.6M0.24%+61,647+8.3%Added
Nomura Asset Management Co Ltd801,391$61.4M0.31%−16,600−2.0%Reduced
Calamos Advisors LLC799,178$61.2M0.25%−10,590−1.3%Reduced