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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
Loomis Sayles & Co L P412,857$31.6M0.04%−174,861−29.8%Reduced
Whittier Trust Co412,227$31.6M0.51%+7,293+1.8%Added
Systematic Alpha Investments, LLC410,682$31.5M1.46%00.0%Unchanged
MML Investors Services, LLC409,871$31.4M0.23%+63,975+18.5%Added
CORDA Investment Management, LLC.407,484$31.2M2.45%+16,125+4.1%Added
Tobias Financial Advisors, Inc.407,484$31.2M2.45%+407,484New
Alberta Investment Management Corp406,967$31.2M0.19%+17,267+4.4%Added
Simplex Trading, LLC403,118$30.9M1.01%+364,902+954.8%Added
Scotia Capital Inc.402,152$30.8M0.20%−1,102−0.3%Reduced
Welch & Forbes LLC401,444$30.8M0.46%−5,386−1.3%Reduced
CWM, LLC400,282$30.7M0.22%+400,282New
S&CO Inc395,973$30.3M2.14%+1,180+0.3%Added
Ilmarinen Mutual Pension Insurance Co394,000$30.2M0.35%00.0%Unchanged
Oppenheimer Asset Management Inc.391,487$30.0M0.40%+12,227+3.2%Added
Bridgewater Associates, LP390,342$29.9M0.17%+251,339+180.8%Added
Rothschild & Co Asset Management US Inc.388,113$29.7M0.35%+2,246+0.6%Added
Smith Group Asset Management, LLC386,102$29.6M1.36%+202,304+110.1%Added
Kempen Capital Management N.V.385,855$29.6M0.92%+31,281+8.8%Added
Becker Capital Management Inc382,376$29.3M1.16%−5,364−1.4%Reduced
Davenport & Co LLC378,604$29.0M0.20%−8,099−2.1%Reduced
Mackay Shields LLC378,218$29.0M0.24%−9,928−2.6%Reduced
Clark Capital Management Group, Inc.377,425$28.9M0.35%+24,537+7.0%Added
Rockland Trust Co377,306$28.9M1.84%+15,836+4.4%Added
Poplar Forest Capital LLC377,220$28.9M3.04%−30,178−7.4%Reduced
Ci Investments Inc.376,759$28.9M0.10%+123,956+49.0%Added
Highland Capital Management, LLC375,495$28.8M1.63%−3,859−1.0%Reduced
ZWJ Investment Counsel Inc373,940$28.7M1.47%+1750.0%Added
Cardinal Capital Management, Inc.373,855$28.7M1.34%+737+0.2%Added
CIBC Asset Management Inc371,091$28.4M0.10%−139,625−27.3%Reduced
Private Wealth Partners, LLC368,065$28.2M2.38%+13,547+3.8%Added
Westpac Banking Corp367,104$28.1M0.29%−13,632−3.6%Reduced
Colony Group LLC366,440$28.1M0.49%−19,909−5.2%Reduced
Meyer Handelman Co360,283$27.6M1.03%+1,497+0.4%Added
Stephens Inc359,355$27.5M0.42%−97,394−21.3%Reduced
Kames Capital plc357,814$27.4M0.35%−21,940−5.8%Reduced
MEAG MUNICH ERGO, Kapitalanlagegesellschaft mbH354,058$27.4M1.95%+347,433+5,244.3%Added
Teachers Retirement System of the State of Kentucky357,254$27.4M0.24%−7,094−1.9%Reduced
Willis Investment Counsel355,073$27.2M1.43%+14,773+4.3%Added
Silvercrest Asset Management Group LLC354,676$27.2M0.17%−8,128−2.2%Reduced
CTC LLC354,088$27.1M0.62%+354,088New
Border to Coast Pensions Partnership Ltd352,933$27.0M0.91%00.0%Unchanged
Boston Common Asset Management, LLC352,115$27.0M1.09%−52,198−12.9%Reduced
TD Waterhouse Canada Inc.324,191$26.8M0.26%+324,191New
Smith Chas P & Associates Pa Cpas349,951$26.8M1.83%+7,405+2.2%Added
Texas Permanent School Fund347,894$26.7M0.33%−43,158−11.0%Reduced
Private Advisor Group, LLC347,805$26.7M0.20%−118,699−25.4%Reduced
Yousif Capital Management, LLC346,618$26.6M0.27%+346,618New
Sphera Funds Management Ltd.346,423$26.6M3.15%+346,423New
Huntington National Bank346,191$26.5M0.24%−1,124−0.3%Reduced
United Capital Financial Advisers, LLC342,417$26.2M0.12%−15,355−4.3%Reduced
Cannell Peter B & Co Inc342,098$26.2M0.74%+12,360+3.7%Added
Cerity Partners LLC348,641$26.2M0.40%+23,707+7.3%Added
Vaughan David Investments LLC341,815$26.2M0.77%+6,731+2.0%Added
Waters Parkerson & Co., LLC338,974$26.0M1.37%−10,687−3.1%Reduced
IFM Investors Pty Ltd334,542$25.6M0.47%−4,169−1.2%Reduced
Tdam USA Inc.333,932$25.6M1.59%+27,087+8.8%Added
Mutual of America Capital Management LLC333,243$25.5M0.26%+1,372+0.4%Added
Bokf, NA332,365$25.5M0.39%−13,855−4.0%Reduced
Cullen/Frost Bankers, Inc.329,806$25.3M0.48%−27,303−7.6%Reduced
Klingenstein Fields & Co LP328,656$25.2M1.01%−5,666−1.7%Reduced
Thompson Siegel & Walmsley LLC326,700$25.0M0.34%+3,723+1.2%Added
Bruce & Co., Inc.323,700$24.8M4.96%00.0%Unchanged
Easterly Investment Partners LLC322,328$24.7M1.80%−274,145−46.0%Reduced
Commonwealth of Pennsylvania Public School Empls Retrmt Sys317,051$24.3M0.25%−173−0.1%Reduced
Berkshire Asset Management LLC314,610$24.1M1.47%+4,111+1.3%Added
Northwestern Mutual Wealth Management Co312,056$23.9M0.04%+15,601+5.3%Added
Grandfield & Dodd, LLC311,720$23.9M1.54%+2,441+0.8%Added
Brown Brothers Harriman & Co309,868$23.7M0.13%−25,162−7.5%Reduced
Advisors Capital Management, LLC308,291$23.6M0.64%+12,702+4.3%Added
Transcend Wealth Collective, LLC307,443$23.6M2.08%+2,087+0.7%Added
Suncoast Equity Management307,221$23.5M2.98%+147,943+92.9%Added
TownSquare Capital, LLC305,372$23.4M0.59%+1,319+0.4%Added
Heritage Investors Management Corp303,349$23.2M0.90%+2,856+1.0%Added
Nissay Asset Management Corp303,195$23.2M0.18%+3,469+1.2%Added
Rhenman & Partners Asset Management AB300,000$23.1M1.54%00.0%Unchanged
Davis R M Inc300,742$23.0M0.51%+8,233+2.8%Added
Howard Capital Management Group, LLC299,771$23.0M1.90%+6,447+2.2%Added
B. Metzler seel. Sohn & Co. AG296,056$22.8M0.30%+296,056New
Capital Investment Advisors, LLC297,933$22.8M0.70%−13,137−4.2%Reduced
Heritage Wealth Advisors297,246$22.8M1.25%+23,053+8.4%Added
Alpha Cubed Investments, LLC296,652$22.7M1.49%+4,944+1.7%Added
Oppenheimer & Co Inc292,326$22.4M0.39%+14,070+5.1%Added
Raymond James Trust N.A.288,974$22.1M0.66%−5,282−1.8%Reduced
Metropolitan Life Insurance Co288,925$22.1M0.30%−6,239−2.1%Reduced
Ingalls & Snyder LLC288,099$22.1M1.01%−10,930−3.7%Reduced
Sumitomo Mitsui DS Asset Management Company, Ltd287,764$22.1M0.46%+7,507+2.7%Added
Thomasville National Bank280,616$21.5M2.06%+13,474+5.0%Added
AE Wealth Management LLC277,336$21.3M0.15%+66,661+31.6%Added
Varma Mutual Pension Insurance Co274,800$21.1M0.31%+60,000+27.9%Added
Illinois Municipal Retirement Fund272,172$20.9M0.58%+53,438+24.4%Added
Hartford Investment Management Co270,312$20.7M0.48%+20,089+8.0%Added
KLCM Advisors, Inc.269,029$20.6M4.49%−1,252−0.5%Reduced
Covington Capital Management267,409$20.5M0.71%+4,560+1.7%Added
Steward Partners Investment Advisory, LLC266,049$20.4M0.31%+4,043+1.5%Added
Clough Capital Partners L P264,500$20.3M1.36%+217,500+462.8%Added
Brinker Capital Investments, LLC263,983$20.2M0.29%−12,282−4.4%Reduced
Tredje AP-fonden262,203$20.1M0.39%00.0%Unchanged
SG Americas Securities, LLC260,041$19.9M0.13%+236,869+1,022.2%Added
First Manhattan Co259,911$19.9M0.07%−2,566−1.0%Reduced
Federation des caisses Desjardins du Quebec257,192$19.7M0.20%−180.0%Reduced