PRTA
Prothena Corporation plc Ordinary SharesData: 2026-10-02
Quick Stats
Oct 02, 202671.3
AI Score
HOLD1.58
Volume Ratio
Nov 05, 2026
Next Earnings
13
+ve Days (30d)
17
-ve Days (30d)
PRTA Price vs Max Options Open Interest
How to read this: the line is the stock price; the bars show where the most option open interest sits each day. Strikes with heavy open interest often act as magnets or barriers for price ("max pain" zones). Scroll right for the most recent days.
PRTA Max Change In Options Open Interest
How to read this: each bar is the option contract whose open interest changed the most yesterday. Green bars = new positions being opened (conviction building at that strike); red bars = positions being closed. Call builds above the current price suggest upside bets; put builds below it suggest hedging or downside bets.
PRTA Options - Sort by Max open Interest (near term)
3rd October 2026 (Data is delayed in normal mkt. hours)
| Type | Expiration | Strike | OI | Change in OI |
Volume | Ask | PC | Delta | Vega | Volatility | % change | Track |
|---|
PRTA Daily Out of Money Options - Sort by Max open Interest (near term)
3rd October 2026 (Data is delayed in normal mkt. hours)
| Type | Expiration | Strike | OI | Change in OI |
Volume | Ask | PC | Delta | Vega | Volatility | % change | Track |
|---|
PRTA Daily In the Money Options - Sort by Max open Interest (near term)
3rd October 2026 (Data is delayed in normal mkt. hours)
| Type | Expiration | Strike | OI | Change in OI |
Volume | Ask | PC | Delta | Vega | Volatility | % change | Track |
|---|
PRTA Most Active Options by Volume(near term)
3rd October 2026 (Data is delayed in normal mkt. hours)
| Type | Expiration | Strike | Volume | OI | Change in OI |
Ask | PC | Delta | Vega | Volatility | % change | Track |
|---|
PRTA Technical Chart Pro Chart
- Candlesticks: Green = price up, Red = price down. Body shows open/close, wicks show high/low.
- SMAs: Moving averages help identify trends. Price above SMA = bullish, below = bearish.
- Options OI: Shows max open interest strikes. High OI = significant price levels.
- Volume Profile: Shows price levels with most trading activity. POC = Point of Control (highest volume).
- Earnings: Vertical lines mark earnings dates. Watch for volatility around these dates.
- Gamma Walls: Key support/resistance from options gamma exposure. Orange = resistance above, Purple = support below.
- Fibonacci Retracement: Auto-calculated support/resistance levels based on recent high/low. Key levels: 23.6%, 38.2%, 50%, 61.8%, 78.6%.
- Unusual Activity: Highlights days with abnormal volume (2x+ average) or large price moves (5%+). Red marker = unusual activity detected.
Technical Indicators
Volume Profile Analysis
Horizontal histogram showing volume distribution at each price level with buying/selling pressure
PRTA Stock Summary
Last updated Oct 02, 2026
PRTA is currently trading at $8.36, positioned below its 200-day moving average of $9.32, suggesting bearish momentum. The stock has a 52-week range of $7.73 to $11.8.
Technical Analysis: The 50-day moving average stands at $8.88, which is above the current price, indicating bearish near-term pressure. The RSI (Relative Strength Index) reads 43.034, suggesting the stock is neutral with balanced momentum.
Money Flow Indicators: The Chaikin Money Flow (20-day) is -0.003, which is negative, suggesting distribution or selling pressure. Our AI-powered investment score rates PRTA at 71.3/100 with a HOLD recommendation.
PRTA (Prothena Corporation plc Ordinary Shares) Indicators
Last updated Oct 02, 2026
| Indicator | Value |
|---|---|
| RSI(14) | 43.034 |
| CMF (20) | -0.003 |
| ROC (10) | -2.564 |
| ADX (14) | 13.755 |
| Indicator | Value |
|---|---|
| MACD (12,26,9) | -0.171 |
| AROONOSC (14) | -28.571 |
| WILLAMS %R (14) | -71.801 |
| MFI (14) | 51.919 |
PRTA Candlestick Patterns
Validated patterns fired in the last 10 sessions. Hit rate = how often price moved in the signal's direction within 5 trading days (backtest: 2.7M signals, 3,500 liquid stocks, Feb 2025–Sep 2026). Baseline: a random stock closes higher 5 days later 53% of the time. Click a row to see the candle on the chart.
| Date | Pattern | Signal | 5-Day Hit Rate | Edge vs Baseline | Sample |
|---|---|---|---|---|---|
| Oct 02 | Marubozu (bearish) (contrarian — textbook says the opposite) | Bullish | 56.2% | +3.2 pts | 30540 |
| Sep 30 | Marubozu (bearish) (contrarian — textbook says the opposite) | Bullish | 56.2% | +3.2 pts | 30540 |
| Sep 23 | Marubozu (bearish) (contrarian — textbook says the opposite) | Bullish | 56.2% | +3.2 pts | 30540 |
These are statistical tilts, not standalone trade setups. Only patterns with a measured edge are shown — roughly 50 of 60 textbook patterns showed no edge and are hidden.
Prothena Corporation plc Ordinary Shares is below both the 50 Day and 200 Day SMA which is considered Bearish.
PRTA Moving Averages Analysis
PRTA (Prothena Corporation plc Ordinary Shares) Simple Moving Averages
Moving Averages are last updated Oct 02, 2026
| Days | MA |
|---|---|
| 10 | 8.56 |
| 20 | 8.73 |
| 30 | 8.96 |
| 50 | 8.88 |
| 100 | 9.03 |
| 200 | 9.32 |
PRTA Fundamental Analysis
| P/E (Forward) | 10.627 |
| P/E (Trailing) | -- |
| Market Cap ($) | 438.4 million |
| Earnings/Share ($) | -0.83 |
| Net Profit Margin (%) | -0.8068 |
| Dividend/Share ($) | -- |
| EPS Estimate Current Year ($) | 0.65 |
| EPS Estimate Next Year ($) | -1.52 |
| WallStreet Target Price ($) | 21.40 |
| Most Recent Quarter |
Prothena Corp PLC is a clinical biotechnology company that focuses on protein dysregulation and a pipeline of investigational therapeutics with the potential to change the course of devastating neurodegenerative and rare and peripheral amyloid diseases. The company's clinical pipeline of antibody-based product candidates targets a range of indications, including Amyloid Light-chain (AL) amyloidosis (NEOD001), Parkinson's disease and other related synucleinopathies (PRX002), and inflammatory diseases, including ATTR amyloidosis [Coramitug (PRX004)], Alzheimer's disease (PRX123), Neurodegeneration (PRXPRX019), and Others.