PRTA Stock Analysis: Buy, Sell, or Hold?
PRTA - Prothena Corporation plc Ordinary Shares
$9.08
-0.18 (-1.94%)
âŧ
5d:
+5.83%
30d:
+7.71%
90d:
-5.42%
WAIT
LOW Confidence
Analysis Updated: Aug 13, 2026 12:00 AM ET
Earnings: Aug 03, 2026
0d
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Interactive Price Chart (1 Month)
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Bottom Line:
âšī¸ NEUTRAL: PRTA is fairly priced but lacks strong directional signals. At 0% expected growth, valuation appears cheap. Wait for clearer setup or better entry on dips.
âšī¸ NEUTRAL: PRTA is fairly priced but lacks strong directional signals. At 0% expected growth, valuation appears cheap. Wait for clearer setup or better entry on dips.
In-depth Analysis How we analyze
Valuation Analysis: PRTA is currently trading at $9.08, which is considered slightly high relative to its 30-day fair value range of $8.38 to $9.26. From a valuation perspective, the stock is trading at a discount (Forward PE: -6.0) compared to its historical average (18.0). At these levels, the market is pricing in 0% annual earnings growth. This growth rate appears achievable given the company's track record, suggesting the valuation is rational.
Technical Outlook: Technically, PRTA is in a strong uptrend. Immediate support is located at $8.00, while resistance sits at $9.37.
Market Sentiment: PRTA scores 8/100 on our bottoming-setup gauge. Note this measures entry quality, not trend direction — a low score can mean the chart is extended after a strong run (don't chase) or still falling without stabilization; better entries typically come after a pullback toward the 20-day average. In the options market, Implied Volatility is low (0th percentile), suggesting options premiums are relatively cheap. This makes it an attractive time for long options strategies if you have a directional bias. Wall Street analysts see significant upside, with an average price target of $21.40 (+135.7%). Current signals suggest waiting for a better entry point before initiating new positions.
Technical Outlook: Technically, PRTA is in a strong uptrend. Immediate support is located at $8.00, while resistance sits at $9.37.
Market Sentiment: PRTA scores 8/100 on our bottoming-setup gauge. Note this measures entry quality, not trend direction — a low score can mean the chart is extended after a strong run (don't chase) or still falling without stabilization; better entries typically come after a pullback toward the 20-day average. In the options market, Implied Volatility is low (0th percentile), suggesting options premiums are relatively cheap. This makes it an attractive time for long options strategies if you have a directional bias. Wall Street analysts see significant upside, with an average price target of $21.40 (+135.7%). Current signals suggest waiting for a better entry point before initiating new positions.
Quick Decision Summary
Current Position
SLIGHTLY HIGH
Historical Trading Range
$8.38 -
$9.26
Company Quality Score
38/100
(SELL)
Volume Confirmation
HIGH
Confidence Score
57.7%
Protect Your Profits
Holding PRTA? Use our AI-powered strategies to protect your downside while keeping your long-term position.
View Profit Protection PlanAll Signals
- BULLISH: Options cheap (IV 0th percentile)
- BEARISH: Weak technical setup (8/100)
- BULLISH: High volume confirmation
- BULLISH: Trading 135.7% below Wall St target ($21.40)
- BULLISH: Market expects only 0% annual growth - appears undervalued
- WARNING: Composite score 38/100 in the bottom quintile â this cohort historically lags the market
Trading Range Analysis
30-Day Trading Range
$8.38 -
$9.26
Current vs Trading Range
SLIGHTLY HIGH
Expected Move (7 Days)
Âą$0.85
(9.4%)
Support & Resistance Levels
Support Level
$8.00
Resistance Level
$9.37
Current Trend
Strong Uptrend
Technical data as of
Aug 13, 2026
Fundamental Context
Forward P/E (Next Year Est.)
-5.97
Wall Street Target
$21.40
(+135.7%)
Revenue Growth (YoY)
-77.1%
Profit Margin
-80.7%
PE vs Historical
-6.0 vs 18.0
CHEAP
Share & Embed Analysis
Last updated: August 14, 2026 4:32 AM ET
Data refreshes hourly during market hours. Next update: 5:32 AM
Data refreshes hourly during market hours. Next update: 5:32 AM
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Technical Signals Check
Is PRTA showing a specific setup today?
Insider Activity (6 Months)
0
Buys
0
Sells
0
Net
NEUTRAL
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Advanced PRTA Option Strategies
Professional options setups generated by AI based on today's PRTA price and gamma walls.
