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Compare · MRK vs REGN

MRK vs REGN

Side-by-side comparison of Merck & Company Inc. (MRK) and Regeneron Pharmaceuticals Inc. (REGN): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both MRK and REGN operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
  • MRK is the larger of the two at $274.19B, about 3.8x REGN ($71.96B).
  • Over the past year, MRK is up 30.5% and REGN is up 18.2% - MRK leads by 12.3 points.
  • REGN has been more active in the news (15 items in the past 4 weeks vs 12 for MRK).
  • Both have 25 recent analyst ratings on file.
PerformanceMRK+30.54%REGN+18.21%
2025-04-30+0.00%2026-04-30
MetricMRKREGN
Company
Merck & Company Inc.
Regeneron Pharmaceuticals Inc.
Price
$111.05+0.03%
$707.57+3.09%
Market cap
$274.19B
$71.96B
1M return
-7.59%
-8.39%
1Y return
+30.54%
+18.21%
Industry
Biotechnology: Pharmaceutical Preparations
Biotechnology: Pharmaceutical Preparations
Exchange
NYSE
NASDAQ
IPO
1991
News (4w)
12
15
Recent ratings
25
25
MRK

Merck & Company Inc.

Merck & Co., Inc. operates as a healthcare company worldwide. It operates through two segments, Pharmaceutical and Animal Health segments. The Pharmaceutical segment offers human health pharmaceutical products in the areas of oncology, hospital acute care, immunology, neuroscience, virology, cardiovascular, diabetes, and women's health, as well as vaccine products. The Animal Health segment provides discovers, develops, manufactures, and markets a range of veterinary pharmaceuticals, vaccines, and health management solutions and services, as well as a suite of digitally connected identification, traceability, and monitoring products. The company has collaborations with AstraZeneca PLC; Bayer AG; Eisai Co., Ltd.; and Ridgeback Biotherapeutics. 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 collaboration agreement with Gilead Sciences, Inc. to co-develop and co-commercialize long-acting investigational treatment combinations of Lenacapavir and Islatravir in HIV; Amathus Therapeutics to develop treatments for neurodegenerative diseases; and Linnaeus Therapeutics, Inc. to evaluate LNS8801 in combination with KEYTRUDA for patients with advanced cancer. It also has a collaboration with Biomed X Gmbh for building on ongoing research projects in the fields of oncology (DNA damage response and RNA splicing) and autoimmunity (intestinal epithelial barrier in autoimmune diseases); and a collaboration agreement with NGM Biopharmaceuticals, Inc. to focus primarily on the development of novel medicines for unmet patient needs in retinal and CVM diseases, including heart failure. Merck & Co., Inc. was founded in 1891 and is headquartered in Kenilworth, New Jersey.

REGN

Regeneron Pharmaceuticals Inc.

Regeneron Pharmaceuticals, Inc. discovers, invents, develops, manufactures, and commercializes medicines for treating various medical conditions 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 in adults, and asthma; Praluent injection for heterozygous familial hypercholesterolemia or clinical atherosclerotic cardiovascular disease in adults; and Kevzara solution for subcutaneous injection for treating rheumatoid arthritis in adults. In addition, the company offers Libtayo injection to treat metastatic or locally advanced cutaneous squamous cell carcinoma; 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. Further, it offers Inmazeb injection for infection caused by Zaire ebolavirus; and develops product candidates for treating patients with eye, allergic and inflammatory, cancer, cardiovascular and metabolic, pain, infectious, and other diseases. The company 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. It has collaborations with Zai Lab Limited; Intellia Therapeutics, Inc.; Biomedical Advanced Research Development Authority; and AstraZeneca PLC. Regeneron Pharmaceuticals, Inc. was founded in 1988 and is headquartered in Tarrytown, New York.

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