
Prothena Corporation plc
PRTANASDAQHealthcareBiotechnology
Previous close
$9.45
+$0.42 · +4.65%
PRTA company overview
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GoAI snapshot
AI-powered factor overview
GoAI score
Hold
Wait — insufficient conviction to act
Valuation
47
Fair Value
Momentum
37
Weakening
Sentiment
54
Mixed
Risk resilience
53
Elevated Risk
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Company profile
Company websiteProthena 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.
- Industry
- Biotechnology
- Sector
- Healthcare
- Headquarters
- IE
- CEO
- Gene G. Kinney
- Listed since
- Dec 20, 2012
- Employees
- 67
Market position
Day range
Current $9.45
52-week range
Current $9.45
- Open
- $9.09
- Previous close
- $9.03
- Volume
- 376.04K
- 0.72× average
- Average volume
- 525.57K
- Average daily volume
- Market cap
- 494.74M USD
- Beta
- -0.35
- Market reference 1
- 50-day average
- $8.9354
- +5.76% above average
- 200-day average
- $9.5344
- -0.89% below average
Financials
Financial snapshot
Latest / TTMValuation & yield
- Enterprise value
- 220.4M USD
- P/E (TTM)
- -11.39×
- P/B (TTM)
- 1.72×
- P/S (TTM)
- 9.07×
- EV / EBITDA
- -1.12×
- Earnings yield
- -47.48%
- Free cash flow yield
- -31.85%
- Dividend yield
- 0.00%
Profitability & efficiency
- Gross margin
- 43.52%
- Operating margin
- -115.09%
- Net margin
- -80.67%
- Return on equity
- -87.03%
- Return on assets
- -74.69%
- Return on invested capital
- -63.90%
Financial health
- Debt / equity
- 0.02×
- Current ratio
- 7.72×
Financial statements
Margin trends
Profitability as a percentage of reported revenue.
Income trends
Revenue
Operating income
Net income
| Metric (USD) | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 |
|---|---|---|---|---|---|
| Revenue | 9.68M USD | 135.16M USD | 91.37M USD | 53.91M USD | 200.58M USD |
| Cost of goods sold | 3.7M USD | — | — | — | — |
| Gross profit | 5.98M USD | 135.16M USD | 91.37M USD | 53.91M USD | 200.58M USD |
| Research and development | 134.85M USD | 222.52M USD | 220.57M USD | 135.56M USD | 82.28M USD |
| Selling, general, and administrative | 59.39M USD | 67.2M USD | 61.84M USD | 49.9M USD | 46.32M USD |
| Operating expenses | 190.54M USD | 289.72M USD | 282.41M USD | 185.46M USD | 128.6M USD |
| Interest income | 14.14M USD | 25.82M USD | 31.01M USD | 6.35M USD | 42K USD |
| Depreciation and amortization | 3.7M USD | 893K USD | 928K USD | 744K USD | 1.12M USD |
| Operating income | −184.56M USD | −154.56M USD | −191.04M USD | −131.56M USD | 71.98M USD |
| Net income | −244.09M USD | −122.31M USD | −147.03M USD | −116.95M USD | 66.98M USD |
Company facts updated Aug 24, 2026.
Analyst ratings
Third-party consensus; not a GoAI recommendation.
Analyst price target
Average target
$24.50
159.26% upsideRating distribution
28 ratingsRecent analyst actions
PRTA news
PRTA peers
ETFs holding PRTA
Funds reporting this stock among their holdings, ordered by reported position size.
State Street SPDR S&P Biotech ETFXBI13.78M0.12%11.39B USD0.35%$165.73+1.44%
iShares Russell 2000 ETFIWM10.35M0.01%81.62B USD0.19%$299.96+0.77%
Vanguard Extended Market ETFVXF3.91M0.00%93.7B USD0.05%$245.53+0.82%
iShares Biotechnology ETFIBB3.13M0.03%10.75B USD0.44%$213.56+1.29%
iShares Russell 2000 Growth ETFIWO2.27M0.02%15.16B USD0.24%$387.37+1.24%
Vanguard Russell 2000 ETFVTWO2.02M0.01%17.4B USD0.06%$121.25+0.74%
Schwab U.S. Small-Cap ETFSCHA1.82M0.01%23.1B USD0.03%$34.83+0.52%
iShares Russell 2000 Value ETFIWN1.53M0.01%14.66B USD0.24%$224.81+0.45%
State Street SPDR S&P Biotech ETFXBI- Market value
- 13.78M
- Weight
- 0.12%
- AUM
- 11.39B USD
- Expense ratio
- 0.35%
- Price / 1D
- $165.73+1.44%
iShares Russell 2000 ETFIWM- Market value
- 10.35M
- Weight
- 0.01%
- AUM
- 81.62B USD
- Expense ratio
- 0.19%
- Price / 1D
- $299.96+0.77%
Vanguard Extended Market ETFVXF- Market value
- 3.91M
- Weight
- 0.00%
- AUM
- 93.7B USD
- Expense ratio
- 0.05%
- Price / 1D
- $245.53+0.82%
iShares Biotechnology ETFIBB- Market value
- 3.13M
- Weight
- 0.03%
- AUM
- 10.75B USD
- Expense ratio
- 0.44%
- Price / 1D
- $213.56+1.29%
iShares Russell 2000 Growth ETFIWO- Market value
- 2.27M
- Weight
- 0.02%
- AUM
- 15.16B USD
- Expense ratio
- 0.24%
- Price / 1D
- $387.37+1.24%
Vanguard Russell 2000 ETFVTWO- Market value
- 2.02M
- Weight
- 0.01%
- AUM
- 17.4B USD
- Expense ratio
- 0.06%
- Price / 1D
- $121.25+0.74%
Schwab U.S. Small-Cap ETFSCHA- Market value
- 1.82M
- Weight
- 0.01%
- AUM
- 23.1B USD
- Expense ratio
- 0.03%
- Price / 1D
- $34.83+0.52%
iShares Russell 2000 Value ETFIWN- Market value
- 1.53M
- Weight
- 0.01%
- AUM
- 14.66B USD
- Expense ratio
- 0.24%
- Price / 1D
- $224.81+0.45%
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