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Compare · LYEL vs MRK

LYEL vs MRK

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

Summary

  • Both LYEL and MRK operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
  • MRK is the larger of the two at $283.29B, about 965.8x LYEL ($293.3M).
  • Over the past year, LYEL is down 5.4% and MRK is up 46.6% - MRK leads by 52.0 points.
  • MRK has been more active in the news (29 items in the past 4 weeks vs 3 for LYEL).
  • MRK has more recent analyst coverage (25 ratings vs 15 for LYEL).
PerformanceLYEL-5.43%MRK+46.61%
2025-06-04+0.00%2026-06-03
MetricLYELMRK
Company
Lyell Immunopharma Inc.
Merck & Company Inc.
Price
$12.63-15.06%
$114.77-0.80%
Market cap
$293.3M
$283.29B
1M return
-39.54%
+1.46%
1Y return
-5.43%
+46.61%
Industry
Biotechnology: Pharmaceutical Preparations
Biotechnology: Pharmaceutical Preparations
Exchange
NASDAQ
NYSE
IPO
2021
News (4w)
3
29
Recent ratings
15
25
LYEL

Lyell Immunopharma Inc.

Lyell Immunopharma, Inc., a T cell reprogramming company, engages in developing T cell therapies for patients with solid tumors. The company develops therapies using technology platforms, such as Gen-R, an ex vivo genetic reprogramming technology to overcome T cell exhaustion; and Epi-R, an ex vivo epigenetic reprogramming technology to generate population of T cells with durable stemness. Its pipeline includes LYL797, a T cell product candidate for the treatment of non-small cell lung cancer and triple negative breast cancers; LYL845 for multiple solid tumors; and NY-ESO-1 for synovial sarcoma and other solid tumor indications. Lyell Immunopharma, Inc. was incorporated in 2018 and is headquartered in South San Francisco, 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.