Is Prothena Corp. Plc technically bullish or bearish?

As of 3 October 2025, the technical trend for Prothena Corp. Plc has changed from sideways to mildly bullish. The weekly MACD and Dow Theory both indicate a mildly bullish stance, while the monthly MACD is also mildly bullish and the monthly RSI is bullish. However, the daily moving averages are mildly bearish, which presents a mixed picture.
In terms of performance, Prothena has shown strong short-term returns with a 5.42% gain over the past week compared to the S&P 500's 1.09%, and an 18.24% return over the past month versus the S&P 500's 4.15%. However, the longer-term outlook remains concerning, with a year-to-date return of -28.38% against the S&P 500's 14.18%, and a one-year return of -40.95% compared to the S&P 500's 17.82%. Overall, the current technical stance is mildly bullish, but caution is warranted due to the mixed indicators and poor long-term performance.