美国银行调查显示基金经理对股市极度看多，但对回调准备不足

Core Insights - The recent stock market pullback has caught many investors off guard, indicating a potential shift in market sentiment [1] - According to a survey by Bank of America, fund managers' optimism is at its highest level since July 2021, suggesting a bullish outlook prior to the market decline [1] - Protective measures against stock market downturns have dropped to their lowest level in eight years, reflecting a complacent attitude among investors [1]