华尔街恐慌指数创新低，空头纷纷缴械投降

Group 1 - The VIX index has dropped to its lowest intraday level since mid-February, indicating a decrease in Wall Street's expectations for volatility in the coming month [1][4] - The decline in the VIX suggests that some investors betting on a decline in the S&P 500 are closing their positions, particularly "volatility buyers" who profit from market downturns [4] - The realized volatility of the S&P 500 has fallen significantly, with a one-month realized volatility of only 6.9%, which is notably lower than the VIX [4] Group 2 - Despite the low VIX indicating complacency in the summer market, historical trends suggest that volatility may rise in August, often accompanied by a decline in the stock market [5] - Concerns over market liquidity during the vacation season in August could exacerbate volatility, as many seasoned traders take time off, leading to a potential liquidity vacuum [5] - The VIX's low levels may not last, with expectations from RBC Capital Markets indicating a potential rebound in the VIX next month [4]