Compare · MRK vs SION
MRK vs SION
Side-by-side comparison of Merck & Company Inc. (MRK) and Sionna Therapeutics Inc. (SION): market cap, price performance, sector, and recent activity on the wire.
Summary
- Both MRK and SION operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
- MRK is the larger of the two at $358.21B, about 1941.9x SION ($184.5M).
- MRK has been more active in the news (16 items in the past 4 weeks vs 3 for SION).
- MRK has more recent analyst coverage (25 ratings vs 16 for SION).
- Company
- Merck & Company Inc.
- Sionna Therapeutics Inc.
- Price
- -
- -
- Market cap
- $358.21B
- $184.5M
- 1M return
- -0.79%
- -
- 1Y return
- +72.17%
- -
- Industry
- Biotechnology: Pharmaceutical Preparations
- Biotechnology: Pharmaceutical Preparations
- Exchange
- NYSE
- NASDAQ
- IPO
- 2025
- News (4w)
- 16
- 3
- Recent ratings
- 25
- 16
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.
Latest MRK
- SEC Form 8-K filed by Merck & Company Inc.
- Paul J. Diaz Elected to Merck & Co., Inc., Rahway, N.J., USA Board of Directors
- Merck Showcases First-Time Pivotal Phase 3 Results From Oncology Pipeline and Continued Innovative Potential of Existing Portfolio at ESMO 2026
- Merck Presents One-Year Results from the Pivotal Phase 2b/3 BRUNELLO Study Evaluating Remigromig, a Tri-specific Agonist of the Wingless-related Integration Site (Wnt) Pathway, in Adults with Diabetic Macular Edema at AAO 2026
- 2026 Takes a Promising Turn in the Fight Against Cancer as Five Advances Offer New Hope
- SEC Form 4 filed by Director Seidman Christine E
- SEC Form 4 filed by Director Karsanbhai Surendralal Lanca
- SEC Form 4 filed by Director Coe Mary Ellen
- Merck to Hold Third-Quarter 2026 Sales and Earnings Conference Call Oct. 29
- CAPVAXIVE® Included in Ontario's Publicly Funded Adult Pneumococcal Immunization Program
Latest SION
- Sionna Therapeutics to Present Data at the 2026 North American Cystic Fibrosis Conference
- Director Ra Capital Management, L.P. sold $21,835,018 worth of shares (3,448,811 units at $6.33) (SEC Form 4)
- Amendment: SEC Form SCHEDULE 13D/A filed by Sionna Therapeutics Inc.
- CFO and CBO Ridloff Elena was granted 94,537 shares, increasing direct ownership by 245% to 133,069 units (SEC Form 4)
- CMO and Head of R&D Mckee Charlotte was granted 100,000 shares, increasing direct ownership by 352% to 128,415 units (SEC Form 4)
- CLO and Head of Program Mgmt. Fitzpatrick Jennifer was granted 56,265 shares (SEC Form 4)
- President & CEO Cloonan Michael was granted 218,050 shares, increasing direct ownership by 40% to 765,393 units (SEC Form 4)
- SEC Form 144 filed by Sionna Therapeutics Inc.
- SEC Form 8-K filed by Sionna Therapeutics Inc.
- Sionna Therapeutics Announces Plans to Advance SION-451 + SION-2222 Dual Combination into Phase 2a Proof-of-Concept Trial