PRTA
Prothena Corporation plc Ordinary Shares
PHARMACEUTICAL PREPARATIONS
Best Pharmaceutical Stocks 2026 →
PRTA Stock Analysis: Buy, Sell, or Hold?
$8.73
+0.17 (+1.99%)
▲
5d:
+4.05%
30d:
+4.43%
90d:
-3.85%
Open in Live Scanner
70/30 Portfolio Builder
Earnings: Nov 05, 2026
0d
Protect PRTA Gains
Updated Nov 11, 12:00 AM ET
QUANTITATIVE VERDICT
HOLD
MODERATE Confidence (64%)
Quality Score
56/100
Position
EXTENDED
30-Day Fair Range
$8.15 – $8.72
Position: EXTENDED
Forward P/E & Valuation
-6.6x
CHEAP
vs 18.0x historical avg
Wall Street Target
$21.40
+145.1% upside
Options IV & Volume
HIGH Vol
HIGH volume confirmation
Support / Resistance
$7.79 / $9.26
Trend: Strong Uptrend
Executive Thesis & Bottom Line
Forward Earnings Fair Value & Price Prediction →
📊 HOLD: PRTA shows mixed signals. Fine to hold existing positions. Not urgent to buy or sell.
Get Alerted When PRTA Hits Your Target Price
Join 10,000+ traders who never miss a move
You're in! Check your email to confirm and set your target price.
100% Free
No spam, ever
Unsubscribe anytime
Interactive Price Chart (1 Month)
Loading chart...
Loading historical data...
In-depth Analysis How we analyze
Valuation Analysis: PRTA is currently trading at $8.73, which is considered extended relative to its 30-day fair value range of $8.15 to $8.72. From a valuation perspective, the stock is trading at a discount (Forward PE: -6.6) 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 $7.79, while resistance sits at $9.26.
Market Sentiment: The stock scores a mixed 50/100 on our bottoming-setup gauge, with only partial signs of a stabilized entry point. 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 (+145.1%). The stock is fairly positioned - fine to hold existing positions or accumulate slowly on dips, but not an urgent buy.
Technical Outlook: Technically, PRTA is in a strong uptrend. Immediate support is located at $7.79, while resistance sits at $9.26.
Market Sentiment: The stock scores a mixed 50/100 on our bottoming-setup gauge, with only partial signs of a stabilized entry point. 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 (+145.1%). The stock is fairly positioned - fine to hold existing positions or accumulate slowly on dips, but not an urgent buy.
Quick Decision Summary
Current Position
EXTENDED
Historical Trading Range
$8.15 -
$8.72
Company Quality Score
56/100
(HOLD)
Volume Confirmation
HIGH
Confidence Score
64.2%
Trading Range & Key Levels
30-Day Trading Range
$8.15 -
$8.72
Current vs Trading Range
EXTENDED
Expected Move (7 Days)
±$0.57
(6.6%)
Support Level
$7.79
Resistance Level
$9.26
Current Trend
Strong Uptrend
Technical data as of
Nov 11, 2026
Protect Your Profits
Holding PRTA? Use our AI-powered strategies to protect your downside while keeping your long-term position.
View Profit Protection PlanQuantitative Signal Breakdown
- BEARISH: Price extended above range
- BULLISH: Options cheap (IV 0th percentile)
- NEUTRAL: Mixed technical signals (50/100)
- BULLISH: High volume confirmation
- BULLISH: Trading 145.1% below Wall St target ($21.40)
- BULLISH: Market expects only 0% annual growth - appears undervalued
- NEUTRAL: Bottoming setup forming (50/100) — watch for confirmation
Fundamental Context
Forward P/E (Next Year Est.)
-6.64
Wall Street Target
$21.40
(+145.1%)
Revenue Growth (YoY)
-74.3%
Profit Margin
-45.4%
PE vs Historical
-6.6 vs 18.0
CHEAP
Share PRTA Analysis
Share this live PRTA analysis (with rich preview card) to Reddit, StockTwits, X, or embed the chart on your blog.
bloggers & journalists: you are free to use our charts with attribution.Reddit & Retail Trader Sentiment (PRTA)
Bullish
2 Retail Mentions
Reddit / WSB Comments
1
Bullish
StockTwits Volume
1 msgs
24h retail stream
Last Tracked
Nov 11, 2026
Daily AI digest
AI Retail Discussion Summary:
A bullish StockTwits message expresses strong support for $PRTA, despite the lack of recent news.
Key Retail Themes:
Strong investor conviction
Lack of news impacting sentiment
Aggregated from r/wallstreetbets, r/stocks & StockTwits streams.
View All Trending Reddit & WSB Stocks →
Last updated: November 12, 2026 3:07 AM ET
Data refreshes hourly during market hours. Next update: 4:07 AM
Data refreshes hourly during market hours. Next update: 4:07 AM
🔥 Top Stocks Breaking Out Now
| Ticker | Score | Recommendation | Change % |
|---|
Technical Signals Check
Is PRTA showing a specific setup today?
Insider Activity (6 Months)
0
Buys
0
Sells
0
Net
NEUTRAL
Top Rated Biotechnology Stocks
Top-rated stocks in Biotechnology by analyst ratings.
| Stock | Analyst Consensus | Analyst Target | Tradestie Score |
|---|---|---|---|
|
CYTK
Cytokinetics Inc |
STRONG BUY
22 analysts |
$107 | 61 BUY |
|
INSM
Insmed Inc |
STRONG BUY
24 analysts |
$194 | 37 SELL |
|
MDGL
Madrigal Pharmaceuticals… |
STRONG BUY
19 analysts |
$689 | 56 HOLD |
|
CRNX
Crinetics Pharmaceutical… |
STRONG BUY
17 analysts |
$86 | 46 HOLD |
|
RCUS
Arcus Biosciences Inc |
STRONG BUY
15 analysts |
$41 | 63 BUY |
Advanced PRTA Option Strategies
Professional options setups generated by AI based on today's PRTA price and gamma walls.
Explore More Analysis & Live Quant Tools
Part A: Deep-Dive PRTA Research Pages
