Prothena Corporation plc Stocks

$ 9.86Last Updated 02.04.2026

Issuer Rating

2/7
Performance

Modest

Risk

High

Recommendation

Sell

Market Cap

$ 530.79M

Buy
Review
Evaluation
Target price
Dynamics
Performance
Growth
Dividends
Risks
$ 9.86
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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Data is available to registered users only
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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 company, focuses on discovery and development of novel therapies for life-threatening diseases in the United States. The company is involved in developing Birtamimab, an investigational humanized antibody that is in Phase III clinical trial for the treatment of AL amyloidosis; Prasinezumab, a humanized monoclonal antibody, which is in Phase IIb clinical trial for the treatment of Parkinson's disease; PRX004 that completed Phase I clinical trial for the treatment of Transthyretin amyloidosis; and PRX005, which is in Phase I clinical trial for the treatment of Alzheimer's disease. Its discovery and preclinical programs include PRX012 for the treatment of Alzheimer's disease; and dual Aß-Tau vaccine for the treatment and prevention of Alzheimer's disease. Prothena Corporation plc 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. The company was founded in 2012 and is based in Dublin, Ireland.

Company Valuation

Slightly overvalued
3/7

From both historical and forecast perspectives, the stock is slightly overpriced compared to similar stocks.

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Target Price

Favourable
6/7

The average target price of PRTA is 21 and suggests 113% upside potential. Usually, this means a BUY recommendation among investment firms, or a recommendation to increas

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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
    Data is available to registered users only
  • Other risks
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