Prothena plc Stock Price Patterns

PRTA Stock  USD 8.59  -0.41  -4.56%   
According to momentum metrics, momentum metrics show the 14-period RSI of 64 for Prothena Plc, indicating sustained upward pressure. Momentum at this level generally supports existing uptrend narratives without signaling exhaustion.
Momentum
Buy Extended
 
Oversold
 
Overbought
For short-term price forecasting, Prothena Plc's sentiment profile - captured through news flow and social engagement - can be as informative as any financial ratio. This module quantifies and translates that data into a price signal. Key fundamentals referenced in Prothena Plc's forecast summary:
 EPS Estimate Next Quarter
-0.32
 EPS Estimate Current Year
0.64
 EPS Estimate Next Year
-1.04
 Wall Street Target Price
21
 EPS Estimate Current Quarter
-0.46
This view aligns Prothena Plc's headline activity with price response and peer context. This module summarizes sentiment around Prothena Plc using options and short interest metrics.

Short Interest Panel - Prothena Plc

Changes in Prothena Plc's short interest are tracked as sentiment context. The series is informational and can be read with price and volatility context.
 200 Day MA
8.6523
 Short Percent
0.1519
 Short Ratio
16.53
 Shares Short Prior Month
7.1 M
 50 Day MA
9.1766

Prothena plc Hype vs Price Pattern

Average sentiment around Prothena Plc is summarized to provide attention context. The panel summarizes sentiment trends as informational context.
Correlation between sentiment and price for Prothena Plc can be reviewed as contextual information. The output is informational and does not imply direction.
Prothena Plc Implied Volatility
    
  1.28  
Implied volatility for Prothena Plc provides a market-based measure of expected variability. Higher values indicate wider expected ranges, while lower values indicate tighter ranges.
The attention view for Prothena Plc connects headline intensity with short-term volatility context.
Prothena Plc after-hype prediction price
    
  $ 8.59  
This module presents attention signals alongside forecasting, technical analysis, analyst consensus, and earnings.

Rule 16 Reference for the current Prothena contract

Rule 16 converts implied volatility into an estimated daily move of about 0.08% for 2026-06-18 options. With Prothena Plc trading near $ 8.59, that translates to about $ 0.01 per day in either direction.
Prothena Plc Basic Forecasting Models can be used to cross-verify projections for Prothena Plc. The models provide an additional statistical reference.
The How to Trade Prothena Stock guide covers approaches for trading Prothena Plc effectively.
The degree to which Prothena Plc's exhibits mean reversion depends on how efficiently the market prices new information. In highly covered equities, the mean reversion window tends to be shorter.
Intrinsic
Valuation
LowRealHigh
6.138.9711.81
Details
Naive
Forecast
LowNextHigh
5.508.3411.18
Details
Analyst
Consensus
LowTargetHigh
19.1121.0023.31
Details
Earnings
Estimates (0)
LowProjected EPSHigh
1.141.321.51
Details
Before investing in Prothena Plc, assess how Prothena Plc's compares to its competitive peer group. A company that appears undervalued in absolute terms may be fairly priced when measured against sector-relative benchmarks.

After-Hype Price Density Analysis

The after-hype price distribution for Prothena Plc helps investors understand how much of Prothena Plc's predicted return comes from the central scenario versus tail outcomes. Strategies that rely on tail events for Prothena Plc are inherently more speculative.
   Next price density   
       Expected price to next headline  

Estimiated After-Hype Price Volatility

Historical news patterns for Prothena Plc reveal how the market has historically digested different types of information about Prothena Plc's business and market environment. Prothena Plc's after-hype downside and upside margins for the prediction period are 5.75 and 11.43, respectively. The model extrapolates these patterns to estimate likely price boundaries following the next significant.
Current Value
8.59
8.59
After-hype Price
11.43
Upside
Macroaxis estimates the after-hype price of Prothena plc across a 3 months horizon to evaluate where the instrument could settle once headline distortion subsides. This view is most useful when investors want to compare sentiment-driven price extension with a more measured post-news scenario.

Price Outlook Analysis

Have you ever been surprised when a price of a Company such as Prothena Plc is soaring high without any particular reason? This is usually happening because many institutional investors are aggressively trading Prothena Plc backward and forwards among themselves. Have you ever observed a lot of a particular company's price movement is driven by press releases or news about the company that has nothing to do with actual earnings? Usually, hype to individual companies acts as price momentum. If not enough favorable publicity is forthcoming, the Stock price eventually runs out of speed. So, the rule of thumb here is that as long as this news hype has nothing to do with immediate earnings, you should pay more attention to it. If you see this tendency with Prothena Plc, there might be something going there, and it might present an excellent short sale opportunity.
Expected ReturnPeriod VolatilityHype ElasticityRelated ElasticityNews DensityRelated DensityExpected Hype
  0.08 
2.86
 0.00  
  0.01 
9 Events
7 Events
In 9 days
Latest traded priceExpected after-news pricePotential return on next major newsAverage after-hype volatility
8.59
8.59
0.00 
9,533  
Notes

Hype Timeline

Prothena plc is at this time traded for 8.59. The company stock is not elastic to its hype. The average elasticity to hype of competition is 0.01. Prothena is anticipated not to react to the next headline, with the price staying at about the same level, and average media hype impact volatility is over 100%. The immediate return on the next news is anticipated to be very small, whereas the daily expected return is at this time at -0.08%. %. The volatility of related hype on Prothena Plc is about 3575.0%, with the expected price after the next announcement by competition of 8.60. About 19.0% of the company outstanding shares are owned by corporate insiders. The company has price-to-book ratio of 1.73. Typically companies with comparable Price to Book (P/B) are able to outperform the market in the long run. Prothena plc has Price/Earnings To Growth (PEG) ratio of 0.8. The company recorded a loss per share of 4.53. The firm had not issued any dividends in recent years. Given the investment horizon of 90 days the next anticipated press release will be in 9 days.
Prothena Plc Basic Forecasting Models can be used to cross-verify projections for Prothena Plc. The models provide an additional statistical reference.
The How to Trade Prothena Stock guide covers approaches for trading Prothena Plc effectively.

Related Hype Analysis

Peer hype analysis helps investors build a more complete picture of Prothena Plc's competitive environment by quantifying the market's sensitivity to news across all major players in Prothena Plc's sector.
Hype
Elasticity
News
Density
Semi
Deviation
Information
Ratio
Potential
Upside
Value
At Risk
Maximum
Drawdown
KALVKalvista Pharmaceuticals-0.26 8 per month 0.00  0.0011 4.87 -6.60 15.04
BCYCBicycle Therapeutics-0.02 9 per month 0.00 -0.17 4.64 -6.93 12.21
FDMT4D Molecular Therapeutics-0.03 4 per month 0.00 -0.03 7.15 -9.32 25.26
VSTMVerastem-0.03 14 per month 0.00 -0.16 5.85 -7.51 19.78
OLMAOlema Pharmaceuticals 0.51 11 per month 0.00 -0.18 8.11 -7.31 35.57
VTYXVentyx Biosciences-0.03 7 per month 2.74 0.13 9.00 -6.33 37.04
NMRANeumora Therapeutics-0.07 8 per month 3.71 0.1 10.98 -7.10 34.13
CRVSCorvus Pharmaceuticals 0.74 7 per month 3.80 0.1 7.35 -8.33 175.94
GOSSGossamer Bio-0.02 11 per month 0.00 -0.15 9.30 -9.52 89.87
RIGLRigel Pharmaceuticals 0.01 15 per month 0.00 -0.20 4.17 -5.37 18.93

Prothena Plc Additional Predictive Modules

Predictive models for Prothena Plc combine technical indicators with statistical methods to estimate probable price trajectories. Time-series models tend to perform better when fed clean, stationary data with consistent periodicity.

Sentiment Indicators & Methodology

Sentiment analysis for Prothena Plc evaluates news tone, positioning, and narrative momentum. Narrative divergence can signal instability and regime transition risk. Prothena Plc has a market cap of 462.43 M, P/E of 37.12, ROE of -63.62%.

Unless otherwise specified, data for Prothena plc is compiled from periodic company reporting and market reference feeds and standardized for comparability. Analyst projections are included when active coverage applies. Updates may occur throughout the day.

This content is curated and reviewed by:

Raphi Shpitalnik - Junior Member of Macroaxis Editorial Board
Last reviewed on March 2nd, 2026

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