Institutional shares held 1.85 Billion
16M calls
15M puts
Total value of holdings $158B
$1.36B calls
$1.28B puts
Market Cap $216B
2,533,280,000 Shares Out.
Institutional ownership 73.13%
# of Institutions 3,915


Latest Institutional Activity in MRK

Top Purchases

Q1 2025
Mirae Asset Global Investments Co., Ltd. Shares Held: 1.8M ($153M)
Q1 2025
Sg Americas Securities, LLC Shares Held: 661K ($56.3M)
Q1 2025
Aegon Asset Management Uk PLC Shares Held: 1.24M ($106M)
Q1 2025
Cerity Partners LLC Shares Held: 1.99M ($169M)
Q1 2025
Davenport & CO LLC Shares Held: 1.03M ($87.4M)

Top Sells

Q1 2025
Gamma Investing LLC Shares Held: 48.3K ($4.11M)
Q1 2025
Envestnet Asset Management Inc Shares Held: 5.04M ($430M)
Q1 2025
Handelsbanken Fonder Ab Shares Held: 1.77M ($150M)
Q1 2025
Truist Financial Corp Shares Held: 2.14M ($182M)
Q1 2025
Brown Advisory Inc Shares Held: 1.29M ($110M)

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
View All Transactions

Last 12 Months Summary

Buy / Acquisition
394K Shares
From 18 Insiders
Open market or private purchase 17.8K shares
Grant, award, or other acquisition 289K shares
Exercise of conversion of derivative security 86.5K shares
Sell / Disposition
60.3K Shares
From 9 Insiders
Payment of exercise price or tax liability 39.2K shares
Open market or private sale 21.1K shares

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P - Open market or private purchase×
S - Open market or private sale×
V - Transaction voluntarily reported earlier than required×
A - Grant, award, or other acquisition×
D - Sale (or disposition) back to the issuer×
F - Payment of exercise price or tax liability×
I - Discretionary transaction×
M - Exercise of conversion of derivative security×
C - Conversion of derivative security×
E - Expiration of short derivative position×
H - Expiration (or cancellation) of long derivative position with value received×
O - Exercise of out-of-the-money derivative securities×
X - Exercise of in-the-money or at-the-money derivatives securities×
G - Bona fide gift×
L - Small Acquisition×
W - Acquisition or disposition by will or laws×
Z - Deposit into or withdrawal from voting trust×
J - Other acquisition or disposition×
K - Transaction in equity swap or similar instrument×
U - Disposition due to a tender of shares in a change of control transaction×
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