股票股指期权：标的震荡，隐波小幅抬升，市场看涨情绪回落

Investment Rating - The report does not explicitly state an investment rating for the industry or specific companies [1]. Core Insights - The report indicates a slight increase in implied volatility, with market sentiment turning bearish as evidenced by the decline in the underlying indices [1]. - The trading volume for options has shown significant changes, with notable increases in the trading volume of the CSI 1000 index options, which reached 291,254 contracts, an increase of 42,809 contracts [1]. - The report highlights that the implied volatility for the CSI 1000 index options is at 22.14%, reflecting a decrease of 0.15% [4]. Summary by Sections Market Statistics - The Shanghai Composite Index closed at 2,669.01, down by 13.21 points, with a trading volume of 43.45 billion contracts, an increase of 1.26 billion contracts [1]. - The CSI 300 Index closed at 3,927.23, down by 14.18 points, with a trading volume of 156.73 billion contracts, an increase of 11.98 billion contracts [1]. Options Market Statistics - The trading volume for the Shanghai 50 index options was 27,268 contracts, an increase of 3,066 contracts, with an open interest of 75,500 contracts, up by 1,532 contracts [1]. - The trading volume for the CSI 300 index options was 94,675 contracts, an increase of 9,018 contracts, with an open interest of 219,064 contracts, up by 4,506 contracts [1]. Volatility Statistics - The ATM implied volatility for the Shanghai 50 index options is at 13.48%, down by 0.17% [4]. - The ATM implied volatility for the CSI 300 index options is at 13.94%, up by 0.16% [4]. - The ATM implied volatility for the CSI 1000 index options is at 22.14%, down by 0.15% [4].