Prothena's 15min chart triggers MACD Death Cross, KDJ Death Cross alert.

According to the 15-minute chart of Prothena, the MACD indicator has recently crossed below its signal line, a phenomenon known as a Death Cross, while the KDJ indicator has also reached a Death Cross at 16:00 on December 19, 2025. This technical analysis suggests that the stock's price may continue to decline, as the momentum is shifting towards the downside and may further decrease in value.