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Compare · AZN vs MRSN

AZN vs MRSN

Side-by-side comparison of AstraZeneca PLC (AZN) and Mersana Therapeutics Inc. (MRSN): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both AZN and MRSN operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
  • AZN is the larger of the two at $576.71B, about 1856.4x MRSN ($310.7M).
  • Over the past year, AZN is down 3.5% and MRSN is up 199.9% - MRSN leads by 203.3 points.
  • AZN has hit the wire 21 times in the past 4 weeks while MRSN has been quiet.
  • AZN has more recent analyst coverage (25 ratings vs 22 for MRSN).
PerformanceAZN-3.48%MRSN+289.95%
2026-02-02+0.00%2026-06-08
MetricAZNMRSN
Company
AstraZeneca PLC
Mersana Therapeutics Inc.
Price
$181.74-2.29%
$29.11+0.76%
Market cap
$576.71B
$310.7M
1M return
-0.54%
+4.83%
1Y return
-3.48%
+199.86%
Industry
Biotechnology: Pharmaceutical Preparations
Biotechnology: Pharmaceutical Preparations
Exchange
NYSE
NASDAQ
IPO
2026
2017
News (4w)
21
0
Recent ratings
25
22
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.

MRSN

Mersana Therapeutics Inc.

Mersana Therapeutics, Inc., a clinical stage biopharmaceutical company, focuses on the development of antibody drug conjugates (ADC) for cancer patients with unmet need. The company develops XMT-1536, a Dolaflexin ADC targeting NaPi2b that is in Phase I clinical trial for the treatment of patients with ovarian cancer and non-small cell lung cancer (NSCLC) adenocarcinoma; and XMT-1592, a Dolasynthen ADC targeting NaPi2b-expressing tumors, which is in phase I clinical trial for the treatment of ovarian cancer and NSCLC adenocarcinoma. It also develops XMT-1660, a B7-H4-targeted Dolasynthen ADC candidate; and XMT-2056, an immunosynthen development candidate. The company has a strategic research and development partnerships with Merck KGaA and Asana BioSciences, LLC for the development of ADC product candidates utilizing Fleximer. The company was formerly known as Nanopharma Corp. and changed its name to Mersana Therapeutics, Inc. in November 2005. Mersana Therapeutics, Inc. was incorporated in 2001 and is headquartered in Cambridge, Massachusetts.

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