Ambarella's 15min chart shows Bollinger Bands expanding downward, bearish Marubozu pattern.

Based on the 15-minute chart for Ambarella, the Bollinger Bands are expanding downward and a bearish Marubozu was observed on November 11, 2022 at 11:15. This indicates that the market trend is currently being driven by sellers, who have control over the market, and suggests that bearish momentum is likely to persist.