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Compare · JNJ vs PRTA

JNJ vs PRTA

Side-by-side comparison of Johnson & Johnson (JNJ) and Prothena Corporation plc (PRTA): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both JNJ and PRTA operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
  • JNJ is the larger of the two at $560.33B, about 1217.6x PRTA ($460.2M).
  • Over the past year, JNJ is up 51.5% and PRTA is up 73.6% - PRTA leads by 22.1 points.
  • JNJ has been more active in the news (12 items in the past 4 weeks vs 11 for PRTA).
  • JNJ has more recent analyst coverage (25 ratings vs 22 for PRTA).
PerformanceJNJ+51.51%PRTA+73.59%
2025-06-05+0.00%2026-06-05
MetricJNJPRTA
Company
Johnson & Johnson
Prothena Corporation plc
Price
$232.71+1.95%
$8.78-5.08%
Market cap
$560.33B
$460.2M
1M return
+3.67%
-21.44%
1Y return
+51.51%
+73.59%
Industry
Biotechnology: Pharmaceutical Preparations
Biotechnology: Pharmaceutical Preparations
Exchange
NYSE
NASDAQ
IPO
News (4w)
12
11
Recent ratings
25
22
JNJ

Johnson & Johnson

Johnson & Johnson researches and develops, manufactures, and sells a range of products in the health care field worldwide. It operates through three segments: Consumer Health, Pharmaceutical, and Medical Devices. The Consumer Health segment offers baby care products under the JOHNSON'S and AVEENO Baby brands; oral care products under the LISTERINE brand; skin health/beauty products under the AVEENO, CLEAN & CLEAR, DR. CI:LABO, NEUTROGENA, and OGX brands; acetaminophen products under the TYLENOL brand; cold, flu, and allergy products under the SUDAFED brand; allergy products under the BENADRYL and ZYRTEC brands; ibuprofen products under the MOTRIN IB brand; smoking cessation products under the NICORETTE brand; and acid reflux products under the PEPCID brand. This segment also provides women's health products, such as sanitary pads and tampons under the STAYFREE, CAREFREE, and o.b. brands; wound care products comprising adhesive bandages under the BAND-AID brand; and first aid products under the NEOSPORIN brand. The Pharmaceutical segment offers products in various therapeutic areas, including immunology, infectious diseases, neuroscience, oncology, pulmonary hypertension, and cardiovascular and metabolic diseases. The Medical Devices segment provides electrophysiology products to treat cardiovascular diseases and neurovascular care products to treat hemorrhagic and ischemic stroke; orthopaedics products in support of hips, knees, trauma, spine, sports, and other; advanced and general surgery solutions that focus on breast aesthetics, ear, nose, and throat procedures; and disposable contact lenses and ophthalmic products related to cataract and laser refractive surgery under the ACUVUE brand. The company markets its products to general public, and retail outlets and distributors, as well as distributes directly to wholesalers, hospitals, and health care professionals for prescription use. Johnson & Johnson was founded in 1886 and is based in New Brunswick, New Jersey.

PRTA

Prothena Corporation plc

Prothena Corporation plc, a late-stage clinical company, focuses on discovery and development of novel therapies for life-threatening diseases in the United States. The company is involved in developing PRX002/RG7935 that is in Phase 2 clinical trial for treating Parkinson's disease and other related synucleinopathies; and PRX004, an antibody that is in Phase 1 clinical trial for the treatment of ATTR amyloidosis. Its discovery-stage programs include Tau for treating Alzheimer's disease, frontotemporal dementia, progressive supranuclear palsy, chronic traumatic encephalopathy, and other tauopathies; Aß, or Amyloid Beta, a protein for the treatment of Alzheimer's disease; TDP-43 for amyotrophic lateral sclerosis and frontotemporal dementia; and other products for neurodegenerative diseases. The company has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target alpha-synuclein; and a collaboration agreement with Bristol-Myers Squibb to develop antibodies. Prothena Corporation plc was founded in 2012 and is based in Dublin, Ireland.

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