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Compare · GILD vs MRK

GILD vs MRK

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

Summary

  • Both companies sit in the Health Care sector. GILD focuses on Biotechnology: Biological Products (No Diagnostic Substances), while MRK focuses on Biotechnology: Pharmaceutical Preparations.
  • MRK is the larger of the two at $269.81B, about 1.7x GILD ($162.43B).
  • Over the past year, GILD is up 26.7% and MRK is up 31.1% - MRK leads by 4.4 points.
  • MRK has been more active in the news (12 items in the past 4 weeks vs 11 for GILD).
  • Both have 25 recent analyst ratings on file.
PerformanceGILD+26.74%MRK+31.12%
2025-05-01+0.00%2026-04-30
MetricGILDMRK
Company
Gilead Sciences Inc.
Merck & Company Inc.
Price
$130.84+1.56%
$109.17-1.66%
Market cap
$162.43B
$269.81B
1M return
-6.10%
-9.20%
1Y return
+26.74%
+31.12%
Industry
Biotechnology: Biological Products (No Diagnostic Substances)
Biotechnology: Pharmaceutical Preparations
Exchange
NASDAQ
NYSE
IPO
1992
News (4w)
11
12
Recent ratings
25
25
GILD

Gilead Sciences Inc.

Gilead Sciences, Inc., a research-based biopharmaceutical company, discovers, develops, and commercializes medicines in the areas of unmet medical need in the United States, Europe, and internationally. The company provides Biktarvy, Genvoya, Descovy, Odefsey, Truvada, Complera/ Eviplera, Stribild, and Atripla products for the treatment of human immunodeficiency virus (HIV) infection; Veklury, an injection for intravenous use, for the treatment of coronavirus disease 2019; and Epclusa, Harvoni, Vosevi, Vemlidy, and Viread for the treatment of liver diseases. It also offers Yescarta, Tecartus, Trodelvy, and Zydelig products for the treatment of hematology, oncology, and cell therapy patients. In addition, the company provides Letairis, an oral formulation for the treatment of pulmonary arterial hypertension; Ranexa, an oral formulation for the treatment of chronic angina; and AmBisome, a liposomal formulation for the treatment of serious invasive fungal infections. Gilead Sciences, Inc. has collaboration agreements with Arcus Biosciences, Inc.; Pionyr; Tizona; Tango Therapeutics, Inc.; Jounce Therapeutics, Inc.; Galapagos; Janssen; Japan Tobacco, Inc.; Gadeta; Bristol-Myers Squibb Company; Merck; and Novo Nordisk A/S. The company was founded in 1987 and is headquartered in Foster City, California.

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.

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