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Compare · AZN vs RLYB

AZN vs RLYB

Side-by-side comparison of AstraZeneca PLC (AZN) and Rallybio Corporation (RLYB): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both AZN and RLYB operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
  • AZN is the larger of the two at $563.07B, about 6679.9x RLYB ($84.3M).
  • Over the past year, AZN is down 3.5% and RLYB is up 452.5% - RLYB leads by 456.1 points.
  • AZN has been more active in the news (21 items in the past 4 weeks vs 4 for RLYB).
  • AZN has more recent analyst coverage (25 ratings vs 10 for RLYB).
PerformanceAZN-3.51%RLYB+202.32%
2026-02-02+0.00%2026-06-08
MetricAZNRLYB
Company
AstraZeneca PLC
Rallybio Corporation
Price
$181.67-2.33%
$16.04+0.06%
Market cap
$563.07B
$84.3M
1M return
-0.57%
+9.45%
1Y return
-3.51%
+452.55%
Industry
Biotechnology: Pharmaceutical Preparations
Biotechnology: Pharmaceutical Preparations
Exchange
NYSE
NASDAQ
IPO
2026
2021
News (4w)
21
4
Recent ratings
25
10
AZN

AstraZeneca PLC

AstraZeneca PLC discovers, develops, manufactures, and commercializes prescription medicines in the areas of oncology, cardiovascular, renal and metabolism, respiratory, infection, neuroscience, and gastroenterology worldwide. The company's marketed products include Tagrisso, Lynparza, Imfinzi, Enhertu, Koselugo, Lumoxiti, Equidacent, Zoladex, Faslodex, Iressa, Arimidex, Casodex/Cosudex, and others for oncology diseases; Onglyza, Bydureon, Lokelma, Byetta, Qtern, Symlin, and others for cardiovascular, renal, and metabolism diseases; and Symbicort, Pulmicort, Fasenra, Daliresp/Daxas, Duaklir, Tudorza/Eklira, Bevespi, Breztri, Anifrolumab, and others for respiratory and immunology diseases. It also offers other medicines and COVID-19 products, including Synagis, Fluenz Tetra/FluMist Quadrivalent, Seroquel IR/Seroquel XR, Vimovo, Movantik/Moventig, Nexium, Losec/Prilosec, and COVID-19 Vaccine AstraZeneca. The company serves primary care and specialty care physicians through distributors and local representative offices. It has a collaboration agreement with Daiichi Sankyo to develop and commercialize DS-1062 for the treatment of trophoblast cell-surface antigen 2 (TROP2) tumor; AliveCor, Inc. to develop non-invasive potassium monitoring solutions; Massachusetts General Hospital to accelerate digital health solutions; Sanguina on smartphone application study for hemoglobin management in patients with anemia of chronic kidney disease; Alchemab to enhance prostate cancer research; and Proteros biostructures GmbH to discover and develop novel small molecules for the treatment of various types of cancer. The company was formerly known as Zeneca Group PLC and changed its name to AstraZeneca PLC in April 1999. It has a collaboration agreement with Regeneron Pharmaceuticals, Inc. to research, develop, and commercialize small molecule medicines for obesity. AstraZeneca PLC was incorporated in 1992 and is headquartered in Cambridge, the United Kingdom.

RLYB

Rallybio Corporation

Rallybio Corporation, a clinical-stage biotechnology company, engages in discovering, developing, manufacturing, and delivering therapies that enhance the lives of patients suffering from severe and rare diseases. Its lead product candidate is RLYB212, a preclinical-stage monoclonal anti-HPA-1a antibody for the prevention of fetal and neonatal alloimmune thrombocytopenia (FNAIT). The company is also developing RLYB211, a polyclonal anti-HPA-1a antibody that is in a Phase 1/2 clinical trial for the prevention of FNAIT; RLYB114, a pegylated C5 inhibitor in preclinical development for the treatment of complement-mediated ophthalmic diseases; and RLYB116, a subcutaneously administered inhibitor of complement factor 5, or C5, for the treatment of patients with paroxysmal nocturnal hemoglobinuria and generalized myasthenia gravis. The company also has discovery-stage programs that are focused on the identification of small molecule therapeutics for patients with rare metabolic diseases. Rallybio has collaboration with Exscientia for the development of small molecule therapeutics for rare diseases. Rallybio Corporation was incorporated in 2018 and is headquartered in New Haven, Connecticut. Rallybio Corporation operates as a subsidiary of Rallybio Holdings, LLC.

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