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Compare · MRK vs PTIX

MRK vs PTIX

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

Summary

  • Both MRK and PTIX operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
  • MRK is the larger of the two at $204.35B, about 10956.2x PTIX ($18.7M).
  • Over the past year, MRK is up 34.4% and PTIX is down 75.4% - MRK leads by 109.8 points.
  • MRK has been more active in the news (9 items in the past 4 weeks vs 1 for PTIX).
  • MRK has more recent analyst coverage (25 ratings vs 1 for PTIX).
PerformanceMRK+34.42%PTIX-75.41%
2025-04-28+0.00%2026-04-24
MetricMRKPTIX
Company
Merck & Company Inc.
Protagenic Therapeutics Inc.
Price
$111.84-2.43%
$0.73-44.06%
Market cap
$204.35B
$18.7M
1M return
-6.32%
+0.00%
1Y return
+34.42%
-75.41%
Industry
Biotechnology: Pharmaceutical Preparations
Biotechnology: Pharmaceutical Preparations
Exchange
NYSE
NASDAQ
IPO
News (4w)
9
1
Recent ratings
25
1
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.

PTIX

Protagenic Therapeutics Inc.

Protagenic Therapeutics, Inc., a pre-clinical biopharmaceutical company, engages in the discovery and development of therapeutics to treat stress-related neuropsychiatric and mood disorders. Its lead compound, PT00114 is a synthetic form of teneurin carboxy-terminal associated peptide, an endogenous brain signaling peptide that can dampen overactive stress responses. The company was founded in 2016 and is based in New York, New York.

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