PRTA Prothena Corp Forecast, Technical & Fundamental Analysis

Aroon Indicator for PRTA shows an upward move is likely

PRTA's Aroon Indicator triggered a bullish signal on September 03, 2025. Tickeron's A.I.dvisor detected that the AroonUp green line is above 70 while the AroonDown red line is below 30. When the up indicator moves above 70 and the down indicator remains below 30, it is a sign that the stock could be setting up for a bullish move. Traders may want to buy the stock or look to buy calls options. A.I.dvisor looked at 144 similar instances where the Aroon Indicator showed a similar pattern. In of the 144 cases, the stock moved higher in the days that followed. This puts the odds of a move higher at .

Technical Analysis (Indicators)

Bullish Trend Analysis

The Stochastic Oscillator demonstrated that the ticker has stayed in the oversold zone for 1 day, which means it's wise to expect a price bounce in the near future.

Following a 3-day Advance, the price is estimated to grow further. Considering data from situations where PRTA advanced for three days, in of 288 cases, the price rose further within the following month. The odds of a continued upward trend are .

Bearish Trend Analysis

The 10-day RSI Indicator for PRTA moved out of overbought territory on August 25, 2025. This could be a bearish sign for the stock. Traders may want to consider selling the stock or buying put options. Tickeron's A.I.dvisor looked at 27 similar instances where the indicator moved out of overbought territory. In of the 27 cases, the stock moved lower in the following days. This puts the odds of a move lower at .

The Momentum Indicator moved below the 0 level on August 29, 2025. You may want to consider selling the stock, shorting the stock, or exploring put options on PRTA as a result. In of 94 cases where the Momentum Indicator fell below 0, the stock fell further within the subsequent month. The odds of a continued downward trend are .

The Moving Average Convergence Divergence Histogram (MACD) for PRTA turned negative on August 28, 2025. This could be a sign that the stock is set to turn lower in the coming weeks. Traders may want to sell the stock or buy put options. Tickeron's A.I.dvisor looked at 45 similar instances when the indicator turned negative. In of the 45 cases the stock turned lower in the days that followed. This puts the odds of success at .

Following a 3-day decline, the stock is projected to fall further. Considering past instances where PRTA declined for three days, the price rose further in of 62 cases within the following month. The odds of a continued downward trend are .

PRTA broke above its upper Bollinger Band on August 06, 2025. This could be a sign that the stock is set to drop as the stock moves back below the upper band and toward the middle band. You may want to consider selling the stock or exploring put options.

Fundamental Analysis (Ratings)

The Tickeron Price Growth Rating for this company is (best 1 - 100 worst), indicating steady price growth. PRTA’s price grows at a higher rate over the last 12 months as compared to S&P 500 index constituents.

The Tickeron Seasonality Score of (best 1 - 100 worst) indicates that the company is fair valued in the industry. The Tickeron Seasonality score describes the variance of predictable price changes around the same period every calendar year. These changes can be tied to a specific month, quarter, holiday or vacation period, as well as a meteorological or growing season.

The Tickeron Valuation Rating of (best 1 - 100 worst) indicates that the company is fair valued in the industry. This rating compares market capitalization estimated by our proprietary formula with the current market capitalization. This rating is based on the following metrics, as compared to industry averages: P/B Ratio (1.393) is normal, around the industry mean (19.946). P/E Ratio (0.000) is within average values for comparable stocks, (51.910). Projected Growth (PEG Ratio) (0.000) is also within normal values, averaging (2.076). Dividend Yield (0.000) settles around the average of (0.044) among similar stocks. P/S Ratio (43.668) is also within normal values, averaging (324.828).

The Tickeron PE Growth Rating for this company is (best 1 - 100 worst), pointing to worse than average earnings growth. The PE Growth rating is based on a comparative analysis of stock PE ratio increase over the last 12 months compared against S&P 500 index constituents.

The Tickeron SMR rating for this company is (best 1 - 100 worst), indicating weak sales and an unprofitable business model. SMR (Sales, Margin, Return on Equity) rating is based on comparative analysis of weighted Sales, Income Margin and Return on Equity values compared against S&P 500 index constituents. The weighted SMR value is a proprietary formula developed by Tickeron and represents an overall profitability measure for a stock.

The Tickeron Profit vs. Risk Rating rating for this company is (best 1 - 100 worst), indicating that the returns do not compensate for the risks. PRTA’s unstable profits reported over time resulted in significant Drawdowns within these last five years. A stable profit reduces stock drawdown and volatility. The average Profit vs. Risk Rating rating for the industry is 95, placing this stock worse than average.