Prothena's 15-minute chart shows Bollinger Bands expanding downward, bearish marubozu.

Prothena's 15-minute chart has recently exhibited a significant trend reversal, as indicated by the Bollinger Bands expanding downward and the appearance of a bearish Marubozu pattern on March 18, 2023 at 11:00. This suggests that the market trend is currently being driven by a dominant force of sellers, who are exerting control over market dynamics. Consequently, there is a strong likelihood that bearish momentum will continue to prevail in the near term.