Institutional shares held 1.87 Billion
15.6M calls
13.7M puts
Total value of holdings $183B
$1.53B calls
$1.34B puts
Market Cap $252B
2,533,280,000 Shares Out.
Institutional ownership 73.82%
# of Institutions 3,827


Latest Institutional Activity in MRK

Top Purchases

Q3 2024
Vanguard Group Inc Shares Held: 250M ($24.8B)
Q3 2024
D. E. Shaw & Co., Inc. Shares Held: 6.76M ($672M)
Q3 2024
Wellington Management Group LLP Shares Held: 75.8M ($7.53B)
Q3 2024
Amundi Shares Held: 16.1M ($1.6B)
Q3 2024
International Assets Investment Management, LLC Shares Held: 2.97M ($295M)

Top Sells

Q3 2024
Dz Bank Ag Deutsche Zentral Genossenschafts Bank, Frankfurt Am Main Shares Held: 4.99M ($496M)
Q3 2024
Millennium Management LLC Shares Held: 1.8M ($179M)
Q3 2024
Neuberger Berman Group LLC Shares Held: 1.53M ($152M)
Q3 2024
Invesco Ltd. Shares Held: 12.6M ($1.25B)
Q3 2024
Td Asset Management Inc Shares Held: 2.51M ($249M)

About MRK

Merck & Co., Inc. operates as a healthcare company worldwide. It operates through two segments, Pharmaceutical and Animal Health. The Pharmaceutical segment offers human health pharmaceutical products in the areas of oncology, hospital acute care, immunology, neuroscience, virology, cardiovascular, and diabetes, as well as vaccine products, such as preventive pediatric, adolescent, and adult vaccines. The Animal Health segment discovers, develops, manufactures, and markets veterinary pharmaceuticals, vaccines, and health management solutions and services, as well as digitally connected identification, traceability, and monitoring products. It serves drug wholesalers and retailers, hospitals, and government agencies; managed health care providers, such as health maintenance organizations, pharmacy benefit managers, and other institutions; and physicians and physician distributors, veterinarians, and animal producers. The company has collaborations with AstraZeneca PLC; Bayer AG; Eisai Co., Ltd.; Ridgeback Biotherapeutics; and Gilead Sciences, Inc. to jointly develop and commercialize long-acting treatments in HIV. Merck & Co., Inc. was founded in 1891 and is headquartered in Kenilworth, New Jersey.


Insider Transactions at MRK

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
666K Shares
From 22 Insiders
Grant, award, or other acquisition 233K shares
Exercise of conversion of derivative security 432K shares
Sell / Disposition
444K Shares
From 14 Insiders
Payment of exercise price or tax liability 34.1K shares
Open market or private sale 410K shares

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