金融期权周报：隐波下降，市场窄幅震荡-20250428

Group 1: Trading Volume and Open Interest of Financial Options - The average daily trading volume of 50ETF options this week was 769,600 contracts, a -31.45% decrease from the previous week. The put - call trading ratio was 0.95, higher than the previous week and the historical average. The put - call open interest ratio last week was 0.92, also higher than the previous week and the historical average [2]. - The average daily trading volume of Huatai Berich 300ETF options was 734,200 contracts, and the average daily open interest was 1,169,100 contracts [2]. - The average daily trading volume of Southern China Securities 500ETF options was 1,023,300 contracts, and the average daily open interest was 1,100,800 contracts [2]. - The average daily trading volume of ChinaAMC SSE STAR 50ETF options was 579,500 contracts, and the average daily open interest was 1,654,100 contracts [2]. - The average daily trading volume of Shenzhen 100ETF options was 45,000 contracts, and the average daily open interest was 116,500 contracts [2]. - The average daily trading volume of ChiNext ETF options was 1,024,000 contracts, and the average daily open interest was 1,349,200 contracts [2]. - The average daily trading volume of CSI 300 index options was 53,900 lots, and the average daily open interest was 164,400 lots [2]. - The average daily trading volume of CSI 1000 index options was 162,300 lots, and the average daily open interest was 208,100 lots [2]. Group 2: Volatility of Options - As of the close on Friday, the implied volatility of CSI 300 index options was 15.80%, a 0.88% decrease from a week ago. The implied volatility of 50ETF options was 14.35%, a 0.49% decrease from a week ago. The implied volatility of CSI 1000 index options was 25.20%, a 0.34% decrease from a week ago [3]. - The Nanhua 50ETF option volatility index was 14.98, the Nanhua CSI 300 option volatility index was 18.26, and the Nanhua CSI 1000 option volatility index was 26.2 [3]. Group 3: Overall Market Situation - The financial market as a whole maintained a volatile pattern this week. The closing prices of the 5 trading days remained almost unchanged, and the intraday amplitude was relatively small. The trading volume hovered around 1 trillion. The implied volatility of options continued to decline. Currently, the implied volatility of SSE 50 and CSI 300 has fallen to a relatively low level in history, while that of CSI 1000 is at a medium - level in history [4].