Institutional shares held 88.7 Million
1.93M calls
1.69M puts
Total value of holdings $49.3B
$1.08B calls
$942M puts
Market Cap $59.7B
107,190,000 Shares Out.
Institutional ownership 82.71%
# of Institutions 1,411


Latest Institutional Activity in REGN

Top Purchases

Q2 2025
Dodge & Cox Shares Held: 3.83M ($2.13B)
Q2 2025
Norges Bank Shares Held: 1.2M ($666M)
Q2 2025
Citadel Advisors LLC Shares Held: 681K ($379M)
Q2 2025
Two Sigma Advisers, LP Shares Held: 939K ($522M)
Q2 2025
Acadian Asset Management LLC Shares Held: 466K ($259M)

Top Sells

Q2 2025
Price T Rowe Associates Inc Shares Held: 766K ($427M)
Q2 2025
Capital International Investors Shares Held: 3.17M ($1.76B)
Q2 2025
Amundi Shares Held: 897K ($499M)
Q2 2025
California Public Employees Retirement System Shares Held: 315K ($175M)
Q2 2025
Aqr Capital Management LLC Shares Held: 115K ($63.9M)

About REGN

Regeneron Pharmaceuticals, Inc. discovers, invents, develops, manufactures, and commercializes medicines for treating various diseases worldwide. The company's products include EYLEA injection to treat wet age-related macular degeneration and diabetic macular edema; myopic choroidal neovascularization; and diabetic retinopathy, as well as macular edema following retinal vein occlusion, including macular edema following central retinal vein occlusion and macular edema following branch retinal vein occlusion. It also provides Dupixent injection to treat atopic dermatitis and asthma in adults and pediatrics; Libtayo injection to treat metastatic or locally advanced cutaneous squamous cell carcinoma;Praluent injection for heterozygous familial hypercholesterolemia or clinical atherosclerotic cardiovascular disease in adults; REGEN-COV for covid-19; and Kevzara solution for treating rheumatoid arthritis in adults. In addition, the company offers Inmazeb injection for infection caused by Zaire ebolavirus; ARCALYST injection for cryopyrin-associated periodic syndromes, including familial cold auto-inflammatory syndrome and muckle-wells syndrome; and ZALTRAP injection for intravenous infusion to treat metastatic colorectal cancer; and develops product candidates for treating patients with eye, allergic and inflammatory, cardiovascular and metabolic, infectious, and rare diseases; and cancer, pain, and hematologic conditions. It has collaboration and license agreements with Sanofi; Bayer; Teva Pharmaceutical Industries Ltd.; Mitsubishi Tanabe Pharma Corporation; Alnylam Pharmaceuticals, Inc.; Roche Pharmaceuticals; and Kiniksa Pharmaceuticals, Ltd., as well as has an agreement with the U.S. Department of Health and Human Services, as well as with Zai Lab Limited; Intellia Therapeutics, Inc.; Biomedical Advanced Research Development Authority; and AstraZeneca PLC. The company was incorporated in 1988 and is headquartered in Tarrytown, New York.


Insider Transactions at REGN

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
23.3K Shares
From 20 Insiders
Grant, award, or other acquisition 17K shares
Exercise of conversion of derivative security 6.34K shares
Acquisition or disposition by will or laws 14 shares
Sell / Disposition
21.3K Shares
From 13 Insiders
Payment of exercise price or tax liability 10K shares
Open market or private sale 8.88K shares
Bona fide gift 2.39K shares

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