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Compare · MRK vs ZLAB

MRK vs ZLAB

Side-by-side comparison of Merck & Company Inc. (MRK) and Zai Lab Limited (ZLAB): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both MRK and ZLAB operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
  • MRK is the larger of the two at $298.33B, about 159.8x ZLAB ($1.87B).
  • Over the past year, MRK is up 52.5% and ZLAB is down 56.1% - MRK leads by 108.6 points.
  • MRK has been more active in the news (26 items in the past 4 weeks vs 5 for ZLAB).
  • MRK has more recent analyst coverage (25 ratings vs 11 for ZLAB).
PerformanceMRK+52.45%ZLAB-56.12%
2025-06-09+0.00%2026-06-05
MetricMRKZLAB
Company
Merck & Company Inc.
Zai Lab Limited
Price
$120.88+0.51%
$16.63-4.23%
Market cap
$298.33B
$1.87B
1M return
+6.46%
-20.79%
1Y return
+52.45%
-56.12%
Industry
Biotechnology: Pharmaceutical Preparations
Biotechnology: Pharmaceutical Preparations
Exchange
NYSE
NASDAQ
IPO
2017
News (4w)
26
5
Recent ratings
25
11
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.

ZLAB

Zai Lab Limited

Zai Lab Limited develops and commercializes therapies to treat oncology, autoimmune disorders, and infectious diseases primarily in Greater China. The company's commercial products include Zejula for the treatment of breast cancer and non-small cell lung cancer; Optune, a device that delivers tumor treating fields; and Qinlock to treat gastrointestinal stromal tumors. It also develops Odronextamab to treat follicular lymphoma, diffuse large B-cell lymphoma, and other lymphomas; Repotrectinib, a tyrosine kinase inhibitor (TKI) to target ROS1 and TRK A/B/C in TKI-naïve- or -pretreated cancer patients; Margetuximab for the treatment of breast and gastroesophageal cancers; and Bemarituzumab to treat gastric and gastroesophageal junction cancer. In addition, the company develops CLN-081 for the treatment of patients with EGFR exon 20 insertion NSCLC; TPX-0022, an orally bioavailable multi-targeted kinase inhibitor; Tebotelimab, a tetravalent IgG4 monoclonal antibody; Retifanlimab that inhibits interactions between PD-1 and its ligands; ZL-2309, an orally active, selective, and ATP-competitive cell division cycle 7 (CDC7) kinase inhibitor; ZL-1201, a humanized IgG4 monoclonal antibody; Efgartigimod to reduce disease-causing immunoglobulin G antibodies; ZL-1102, a human nanobody targeting interleukin-17; and Sulbactam/durlobactam for the treatment of serious infections caused by Acinetobacter. It has development, license, and collaboration agreements with GlaxoSmithKline; Paratek Bermuda, Ltd.; Five Prime Therapeutics, Inc.; Entasis Therapeutics Holdings, Inc.; Crescendo Biologics Ltd.; Novocure Limited; MacroGenics Inc.; Deciphera Pharmaceuticals, LLC; Incyte Corporation; Regeneron Ireland Designated Activity Company; Turning Point Therapeutics Inc; Cullinan Pearl Corp.; Takeda Pharmaceutical Company Limited; Schrödinger, Inc.; and argenx BV. The company was incorporated in 2013 and is headquartered in Shanghai, China.

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