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Compare · MRK vs PHIO

MRK vs PHIO

Side-by-side comparison of Merck & Company Inc. (MRK) and Phio Pharmaceuticals Corp. (PHIO): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both MRK and PHIO operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
  • MRK is the larger of the two at $204.35B, about 19063.3x PHIO ($10.7M).
  • Over the past year, MRK is up 34.4% and PHIO is down 44.2% - MRK leads by 78.6 points.
  • MRK has been more active in the news (9 items in the past 4 weeks vs 5 for PHIO).
  • MRK has more recent analyst coverage (25 ratings vs 1 for PHIO).
PerformanceMRK+34.42%PHIO-44.16%
2025-04-28+0.00%2026-04-24
MetricMRKPHIO
Company
Merck & Company Inc.
Phio Pharmaceuticals Corp.
Price
$111.84-2.43%
$1.20-3.63%
Market cap
$204.35B
$10.7M
1M return
-6.32%
-6.27%
1Y return
+34.42%
-44.16%
Industry
Biotechnology: Pharmaceutical Preparations
Biotechnology: Pharmaceutical Preparations
Exchange
NYSE
NASDAQ
IPO
News (4w)
9
5
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.

PHIO

Phio Pharmaceuticals Corp.

Phio Pharmaceuticals Corp., a biotechnology company, develops immuno-oncology therapeutics in the United States. It offers INTASYL therapeutic platform focuses on silencing tumor-induced suppression of the immune system. The company develops PH-762, which targets the checkpoint protein PD-1 that prevent T cells from attacking various cells for used in adoptive cell transfer (ACT); PH-804 that targets the suppressive immune receptor TIGIT, which is a checkpoint protein present on T cells and natural killer cells for used in ACT; and PH-790 which targets PD-L1 protein that prevent cancer cells from inactivating T cells and attack the cancer. It has collaboration with AgonOx, Inc. on clinical development of novel immunotherapy drugs targeting key regulators of the immune response to cancer. The company was formerly known as RXi Pharmaceuticals Corporation and changed its name to Phio Pharmaceuticals Corp. in November 2018. Phio Pharmaceuticals Corp. was incorporated in 2011 and is headquartered in Marlborough, Massachusetts.

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