市场形态周报（20250331-20250404）：本周指数普遍下跌

Investment Rating - The report indicates a bullish signal for the Shanghai 50 and CSI 300 indices, while other broad-based signals are neutral [15][19]. Core Insights - The overall market indices experienced a decline this week, with the CSI 300 down by 1.37%, CSI 500 down by 1.19%, and CSI 1000 down by 1.04% [7][19]. - The implied volatility for the Shanghai 50 is at 14.7%, which is an increase of 0.9% from last week. The Shanghai 500's implied volatility is at 18.23%, up by 0.62%, and the CSI 1000's implied volatility is at 23.16%, up by 1.23% [10][19]. - Positive signals appeared 2,294 times from March 21 to March 27, with an average future high point success rate of 28.29%. Negative signals appeared 3,443 times, with an average future low point success rate of 71.81% [12][19]. Summary by Sections Market Review - The report provides a detailed review of the broad market indices, highlighting the performance of various indices and their respective trading volumes and turnover [7][19]. Broad-based Timing Strategy Signals - The report outlines that the Shanghai 50 and CSI 300 have bullish signals, while other indices maintain a neutral stance [15][19]. Industry Timing Strategy Signals - The report identifies bullish signals for the construction materials, textile and apparel, consumer services, and banking sectors, while other industry signals are neutral [16][19].