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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.

Q3 2025 vs. Q2 2025

How the institutions holding Merck & Co., Inc. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of MRK: Q2 2025 compared with Q3 2025
MeasureQ2 2025Of which not filed for Q3 2025Q3 2025Change
Holders3,337603,319+42
Shares1.97B39.5M1.90B−25.7M (−1.3%)
Value$155.9B$3.12B$159.8B+$6.99B (+4.6%)

60 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (191)

Institutions that held Merck & Co., Inc. at the end of Q3 2025 but not at the end of Q2 2025.

Showing the largest 100 of 191 by value.

Institutions new to MRK in Q3 2025
InstitutionSharesValue% of portfolio
Mondrian Investment Partners LTD1,648,317$138.3M2.31%
AXA Investment Managers S.A.1,209,059$101.5M0.27%
Credit Agricole S A1,062,931$89.2M0.30%
Munich Reinsurance Co Stock Corp in Munich1,055,553$88.6M2.22%
Citadel Advisors LLC968,054$81.2M0.07%
Tudor Investment Corp Et Al787,366$66.1M0.43%
Holocene Advisors, LP646,011$54.2M0.12%
Tri Locum Partners LP446,874$37.5M8.62%
CIBC Bancorp USA Inc.345,081$29.0M0.17%
Adams Diversified Equity Fund, Inc.308,800$25.9M0.87%
Ceredex Value Advisors LLC307,732$25.8M0.60%
Point72 Europe (London) LLP256,766$21.6M1.17%
PFM Health Sciences, LP236,468$19.8M1.69%
Moran Wealth Management, LLC214,812$18.0M0.54%
Nearwater Capital Markets, Ltd185,600$15.6M0.21%
Optimas Capital Ltd122,300$10.3M6.49%
First Horizon Corp119,621$10.0M0.47%
Kepler Cheuvreux (Suisse) SA117,124$9.83M0.53%
CAPROCK Group, Inc.63,387$5.33M0.13%
Arrow Capital Pty Ltd40,000$5.07M2.72%
Fluent Financial, LLC60,166$5.05M1.98%
ISAM Funds (UK) Ltd58,095$4.88M1.00%
Insight Wealth Strategies, LLC57,219$4.80M0.57%
Shorepoint Capital Partners LLC49,693$4.17M0.83%
Point72 Asia (Singapore) Pte. Ltd.41,130$3.45M0.53%
University of Texas/Texas Am Investment Managment Co40,489$3.40M0.49%
XTX Topco Ltd39,536$3.32M0.17%
Jump Financial, LLC34,799$2.92M0.04%
CenterBook Partners LP29,451$2.47M0.12%
Optimist Retirement Group LLC28,637$2.40M1.09%
Montecito Bank & Trust27,329$2.29M0.36%
Econ Financial Services Corp24,242$2.03M1.01%
Meitav Dash Investments Ltd23,794$2.00M0.03%
Campbell Capital Management Inc22,235$1.87M0.72%
Portfolio Design Labs, LLC21,259$1.78M0.31%
Zimmer Partners, LP20,000$1.68M0.04%
Ninety One SA (PTY) Ltd20,765$1.66M0.07%
IMC-Chicago, LLC19,187$1.61M0.03%
Occudo Quantitative Strategies LP18,766$1.58M0.19%
Atom Investors LP15,818$1.33M0.10%
Caerus Investment Advisors, LLC15,622$1.31M0.54%
Graham Capital Management, L.P.15,011$1.26M0.05%
Benchmark Investment Advisors LLC13,545$1.18M0.69%
Blackstone Group Inc.13,571$1.14M0.00%
Dynasty Wealth Management, LLC12,148$1.02M0.01%
Pinnbrook Capital Management LP11,925$1.00M0.19%
Abc Arbitrage SA11,779$988.6K0.10%
Requisite Capital Management, LLC11,550$969.6K0.16%
Payne Capital LLC10,540$884.6K0.90%
Oxford Asset Management LLP10,416$874.2K0.29%
Abner Herrman & Brock LLC10,395$872.0K0.09%
Stonegate Management LLC10,245$868.2K0.58%
Financial Consulate, Inc8,867$744.2K0.11%
Aigen Investment Management, LP8,860$743.6K0.12%
Elevate Capital Advisors, LLC8,645$725.6K0.51%
Tradewinds, LLC.7,439$624.4K0.15%
Legacy Advisors, LLC7,290$617.7K0.08%
Schnieders Capital Management, LLC.7,126$598.1K0.11%
LifePlan Financial, LLC7,093$595.3K0.47%
Crabel Capital Management, LLC6,783$569.3K0.51%
Sepio Capital, LP6,670$559.8K0.03%
Curtis Advisory Group, LLC6,600$553.9K0.13%
Scientech Research LLC6,503$545.8K0.19%
Polymer Capital Management (US) LLC6,390$536.3K0.07%
Banyan Capital Management, Inc.6,389$536.2K0.24%
Element Capital Management LLC6,363$534.0K0.76%
Regent Peak Wealth Advisors LLC6,357$533.6K0.11%
Roberts Capital Advisors, LLC6,321$530.5K0.59%
Investment Research Partners LLC6,114$529.4K0.24%
QVR LLC6,151$516.3K0.63%
Litman Gregory Asset Management LLC6,149$516.1K0.04%
Shum Financial Group, Inc.6,083$510.5K0.38%
Sanders Morris Harris LLC6,063$508.9K0.07%
Riversedge Advisors, LLC5,839$490.1K0.08%
My Personal CFO, LLC5,739$481.7K0.19%
Bright Futures Wealth Management, LLC.5,628$472.4K0.37%
Denali Advisors LLC5,500$461.6K0.05%
Steinberganna Wealth Management5,407$453.8K0.21%
Rede Wealth, LLC5,269$446.9K0.35%
Abich Financial Wealth Management LLC5,184$435.1K0.15%
Vista Cima Wealth Management LLC5,061$424.8K0.35%
GenTrust, LLC5,007$423.6K0.02%
DLK Investment Management, LLC4,736$397.5K0.15%
Knightsbridge Asset Management, LLC4,460$374.3K0.06%
Valicenti Advisory Services Inc4,287$360.0K0.08%
Greenup Street Wealth Management LLC4,147$348.0K0.05%
Providence Financial Advisors, LLC4,062$340.9K0.33%
Westfuller Advisors, LLC4,022$340.8K0.15%
Uniting Wealth Partners, LLC3,960$335.5K0.08%
Westbourne Investments, Inc.3,743$321.8K0.15%
Apeiron RIA LLC3,661$314.5K0.07%
Peck Wealth Management, LLC3,659$307.1K0.29%
Berman McAleer LLC3,544$300.3K0.04%
Sonoma Allocations LLC3,566$299.2K0.11%
InTrack Investment Management Inc3,557$298.5K0.18%
a16z Perennial Management, L.P.3,462$290.6K0.02%
Symmetry Partners, LLC3,403$285.6K0.03%
Up Strategic Wealth Investment Advisors LLC3,244$272.9K0.20%
Invera Wealth Advisors, LLC3,235$271.5K0.17%
Paragon Private Wealth Management, LLC3,071$257.8K0.08%

Sold out (149)

Institutions that held Merck & Co., Inc. at the end of Q2 2025 and filed for Q3 2025 without it.

Showing the largest 100 of 149 by value.

Institutions that sold out of MRK in Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Zurich Insurance Group Ltd513,307$40.6M
Weiss Asset Management LP447,390$35.4M
Worldquant Millennium Advisors LLC446,356$35.3M
Trexquant Investment LP196,112$15.5M
Renaissance Technologies LLC139,820$11.1M
Mirae Asset Securities (USA) Inc.125,323$9.92M
Y-Intercept (Hong Kong) Ltd111,815$8.85M
Lombard Odier Asset Management (Europe) Ltd94,918$7.51M
Strategic Global Advisors, LLC90,718$7.18M
TrimTabs Asset Management, LLC71,474$5.66M
Quantessence Capital LLC64,345$5.09M
Benson Investment Management Company, Inc.59,175$4.68M
Aster Capital Management (DIFC) Ltd52,442$4.15M
M Holdings Securities, Inc.47,025$3.72M
Moore Capital Management, LP43,074$3.41M
Globeflex Capital L P42,212$3.34M
Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A.40,429$3.20M
Guild Investment Management, Inc.39,760$3.18M
Qsemble Capital Management, LP39,848$3.15M
CTC Alternative Strategies, Ltd.39,320$3.11M
Delta Global Management LP32,196$2.55M
Eqis Capital Management, Inc.31,755$2.51M
Laurion Capital Management LP27,909$2.21M
Volterra Technologies LP25,511$2.02M
Mach-1 Financial Group, Inc.21,680$1.72M
Diadema Partners LP20,000$1.58M
FORA Capital, LLC19,292$1.53M
Ontario Teachers Pension Plan Board18,926$1.50M
BTG Pactual Asset Management US LLC17,879$1.42M
Fox Run Management, L.L.C.16,761$1.33M
Guardian Investment Management15,100$1.20M
DRW Securities, LLC14,085$1.11M
Lindenwold Advisors13,819$1.09M
ICONIQ Capital, LLC13,689$1.08M
B&D White Capital Company, LLC13,200$1.04M
Aft, Forsyth & Sober, LLC13,000$1.03M
Landscape Capital Management, L.L.C.12,992$1.03M
Glynn Capital Management LLC12,701$1.01M
Quantitative Investment Management, LLC12,586$996.0K
Parallax Volatility Advisers, L.P.12,317$975.0K
TradeLink Capital LLC12,000$950.0K
WBI Investments11,943$945.4K
Sapient Capital LLC11,782$942.3K
Inceptionr LLC11,900$942.0K
Constant Guidance Financial LLC10,680$845.4K
Kessler Investment Group, LLC10,597$838.9K
Neo Ivy Capital Management9,718$769.3K
Twinbeech Capital LP9,665$765.1K
Atlas Private Wealth Advisors8,589$680.0K
Financial Advocates Investment Management7,847$621.2K
Figure 8 Investment Strategies LLC7,076$560.1K
United Super Pty Ltd in its capacity as Trustee for the Construction & Building Unions Superannuation Fund6,400$506.6K
Caitong International Asset Management Co., Ltd6,191$490.1K
Forefront Wealth Partners, LLC4,924$489.9K
Amplius Wealth Advisors, LLC6,165$488.0K
ROI Financial Advisors, LLC5,976$473.1K
Next Capital Management LLC5,814$461.0K
Machina Capital S.A.S.5,684$449.9K
Defined Wealth Management, LLC5,671$448.9K
Capital International Sarl5,438$430.5K
Garda Capital Partners LP5,151$407.8K
Prossimo Advisors, LLC5,116$405.0K
Icon Advisers Inc4,890$387.1K
Arthur M. Cohen & Associates, LLC4,825$381.9K
Cypress Point Wealth Management, LLC4,738$375.1K
West Tower Group, LLC4,700$372.1K
Persistent Asset Partners Ltd4,647$367.9K
Latitude Advisors, LLC4,346$344.1K
Houlihan Financial Resource Group, Ltd.4,336$341.0K
Harmony Asset Management LLC4,301$340.5K
Vigilare Wealth Management4,285$339.2K
PUREfi Wealth, LLC3,987$315.6K
Michael S. Ryan, Inc.3,878$307.0K
Hurlow Wealth Management Group, Inc.3,833$303.4K
Seed Wealth Management, Inc.3,747$296.6K
Muirfield Wealth Advisors LLC3,746$296.5K
Summit X, LLC3,639$288.3K
Opus Capital Group, LLC3,603$285.0K
Wealthedge Investment Advisors, LLC3,582$283.6K
Pennsylvania Capital Management Inc3,555$281.4K
TBH Global Asset Management, LLC3,554$281.3K
Archetype Wealth Partners3,492$276.0K
Gitterman Wealth Management, LLC3,407$269.9K
Abundance Wealth Counselors3,378$267.0K
ASB Consultores, LLC3,362$266.1K
AMJ Financial Wealth Management3,327$263.4K
Leith Wheeler Investment Counsel Ltd.3,236$256.2K
Gerber, LLC3,097$245.2K
Cascade Investment Group, Inc.3,074$243.4K
White Knight Strategic Wealth Advisors, LLC3,059$242.2K
Advisor Resource Council3,052$241.6K
Swan Global Investments, LLC3,042$240.8K
Florida Financial Advisors, LLC2,968$235.0K
Canvas Wealth Advisors, LLC2,762$232.2K
Sage Private Wealth Group, LLC2,920$231.2K
Sand Hill Global Advisors, LLC2,910$230.4K
Commons Capital, LLC2,892$228.9K
Wells Trecaso Financial Group, LLC2,823$223.5K
DMKC Advisory Services, LLC2,705$220.5K
Tilia Fiduciary Partners, Inc.2,785$220.5K

Not filed for Q3 2025 yet (60)

Institutions that held Merck & Co., Inc. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MRK in Q2 2025 that haven't filed for Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Norges Bank36,111,289$2.86B
MEAG MUNICH ERGO, Kapitalanlagegesellschaft mbH888,415$70.3M
Camber Capital Management LP500,000$39.6M
CIBC World Markets Corp359,218$28.4M
Congress Wealth Management LLC274,803$21.8M
Avantax Advisory Services, Inc.264,814$21.0M
EP Wealth Advisors, LLC202,312$16.0M
First Horizon Advisors, Inc.163,245$12.9M
Grassi Investment Management104,417$8.27M
Atria Wealth Solutions, Inc.68,668$5.49M
Northeast Financial Consultants Inc63,051$4.99M
J. W. Coons Advisors, LLC56,220$4.45M
Exchange Capital Management, Inc.55,616$4.40M
Financial Partners Group, LLC36,216$2.87M
E Fund Management Co., Ltd.29,413$2.33M
Graypoint LLC27,425$2.17M
Forte Capital LLC26,408$2.09M
Stonebridge Capital Management Inc23,727$1.88M
Copperwynd Financial, LLC21,144$1.67M
Good Life Advisors, LLC15,663$1.24M
Total Wealth Planning & Management, Inc.14,040$1.11M
Keudell/Morrison Wealth Management11,939$945.1K
North Dallas Bank & Trust Co11,609$919.0K
Prairie Sky Financial Group LLC11,349$898.4K
Aurora Private Wealth, Inc.10,376$821.0K
Schnieders Capital Management LLC8,893$704.0K
SRN Advisors, LLC8,325$659.0K
TFG Advisers LLC6,500$514.5K
Atlas Capital Advisors LLC6,497$514.3K
My Legacy Advisors, LLC5,890$494.9K
Horan Securities, Inc.5,812$460.1K
Enterprise Bank & Trust Co5,761$456.0K
Union Savings Bank5,313$415.0K
Hamilton Capital, LLC4,883$386.6K
Wellington Capital Management, Inc.4,373$346.0K
Bingham Private Wealth, LLC4,227$334.6K
Talon Private Wealth, LLC4,105$325.0K
Greenberg Financial Group2,514$323.0K
Wealth Group, Ltd.3,616$286.0K
Scott Marsh Financial, LLC3,606$285.5K
Breed's Hill Capital LLC3,582$283.6K
Wambolt & Associates, LLC3,146$257.4K
Tyler-Stone Wealth Management3,147$249.1K
Moser Wealth Advisors, LLC3,135$248.2K
Oliver Lagore Vanvalin Investment Group2,755$247.3K
Capital Market Strategies LLC2,675$211.8K
Bordeaux Wealth Advisors LLC2,648$209.6K
Belmont Capital, LLC1,877$148.6K
Semmax Financial Advisors Inc.1,596$128.8K
Montag & Caldwell, LLC1,052$83.3K
Iron Horse Wealth Management, LLC982$77.7K
Capital A Wealth Management, LLC665$72.5K
Centricity Wealth Management, LLC809$64.0K
Parkworth Wealth Management, Inc.682$54.0K
Vega Investment Solutions390$30.9K
Safe Harbor Fiduciary, LLC302$23.9K
PrairieView Partners, LLC188$14.0K
Christopher J. Hasenberg, Inc114$9.02K
Financial Gravity Companies, Inc.50$3.96K
Legacy Investment Solutions, LLC16$1.27K