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Stock Screener·Ireland·Healthcare·PRTA
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Prothena Corporation plc Stocks

$ 9.64Last Updated 09.07.2026

Issuer Rating

3/7
Performance

Average

Risk

High

Recommendation

Sell

Market Cap

$ 504.69M

$ 9.64
Key Takeaways

Risk factor

Very high price volatility

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Data is available to registered users only

Profitability factor

Favourable analyst view

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Risks

  • Default risk
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  • Volatility
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  • Selling difficulty
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  • Stress test
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  • Country risks
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  • Other risks
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About

Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation. Its product pipeline includes Prasinezumab, an investigational humanized monoclonal antibody which is in Phase 3 clinical trial for the treatment of parkinson's disease and other synucleinopathies. The company also develops Coramitug, an investigational antibody, which is in Phase 3 clinical trial for the treatment of transthyretin amyloidosis; BMS-986446, an anti-tau antibody which is in Phase 2 clinical trial to treat Alzheimer's disease; PRX019, an investigational antibody which is in Phase 1 clinical trial for the treatment of neurodegenerative diseases; and PRX123, a Dual Aß-Tau Vaccine, which is in preclinical trial for treating Alzheimer's disease. In addition, it develops discovery- and late-preclinical-stage programs include TDP-43 CYTOPE for the treatment of amyotrophic lateral sclerosis; PRX012, a next-generation anti-Aß antibody which is in phase 1 clinical trial to treat Alzheimer's disease; and PRX012-TfR, a preclinical program for the treatment of Alzheimer's disease. It 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 a-synuclein, including prasinezumab; and master collaboration agreement with Bristol Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. Prothena Corporation plc was incorporated in 2012 and is based in Dublin, Ireland.

Company Valuation

Slightly overvalued
3/7

Based on key historical and expected multiples, the stock is slightly overvalued relative to its peers. Specifically, the stock is 'expensive' on P/E.

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Target Price

Favourable
6/7

The average target price of PRTA is 20.3 and suggests 107% upside potential. Usually, this means a BUY recommendation among investment firms, or a recommendation to incre

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Risks

  • Default risk
    Data is available to registered users only
  • Volatility
    Data is available to registered users only
  • Selling difficulty
    Data is available to registered users only
  • Stress test
    Data is available to registered users only
  • Country risks
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  • Other risks
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