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Compare · MRK vs OMER

MRK vs OMER

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

Summary

  • Both MRK and OMER operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
  • MRK is the larger of the two at $295.19B, about 414.1x OMER ($712.9M).
  • Over the past year, MRK is up 50.7% and OMER is up 161.8% - OMER leads by 111.1 points.
  • MRK has been more active in the news (27 items in the past 4 weeks vs 1 for OMER).
  • MRK has more recent analyst coverage (25 ratings vs 13 for OMER).
PerformanceMRK+50.70%OMER+161.84%
2025-06-09+0.00%2026-06-08
MetricMRKOMER
Company
Merck & Company Inc.
Omeros Corporation
Price
$119.49-1.15%
$9.85+0.66%
Market cap
$295.19B
$712.9M
1M return
+6.40%
-32.71%
1Y return
+50.70%
+161.84%
Industry
Biotechnology: Pharmaceutical Preparations
Biotechnology: Pharmaceutical Preparations
Exchange
NYSE
NASDAQ
IPO
2009
News (4w)
27
1
Recent ratings
25
13
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.

OMER

Omeros Corporation

Omeros Corporation, a commercial-stage biopharmaceutical company, discovers, develops, and commercializes small-molecule and protein therapeutics, and orphan indications targeting inflammation, complement-mediated diseases, disorders of the central nervous system (CNS), and immune-related diseases. It provides OMIDRIA for use in cataract surgery or intraocular lens replacement in the United States. The company's clinical programs include Narsoplimab (OMS721/MASP-2) for hematopoietic stem-cell transplant-associated thrombotic microangiopathy (HSCT-TMA); that is in Phase III clinical trial for immunoglobulin A nephropathy (IgAN), atypical hemolytic uremic syndrome (aHUS), and COVID-19; and Phase II clinical trial to treat lupus nephritis and other renal diseases. Its clinical programs also consist of PPAR? (OMS405) to treat opioid and nicotine addiction; PDE7 (OMS527) for treating addiction and compulsive disorders, and movement disorders; and MASP-3 (OMS906) for paroxysmal nocturnal hemoglobinuria (PNH) and other alternative pathway disorders. The company's preclinical programs comprise MASP-2-small-molecule inhibitors used for the treatment of aHUS, IgAN, HSCT-TMA, and age-related macular degeneration; longer-acting second generation antibody targeting MASP-2; and MASP-3-small-molecule inhibitors to treat PNH and other alternative pathway disorders. Its preclinical programs include G protein-coupled receptor (GPCR) platform, including GPR174, GPR151, GPR161, and other Class A orphan GPCRs for treating immunologic, immuno-oncologic, metabolic, CNS, cardiovascular, musculoskeletal, and other disorders. The company was incorporated in 1994 and is headquartered in Seattle, Washington.