国泰海通｜金工：量化择时和拥挤度预警周报（20251017）

Core Viewpoint - The recent instability in the Sino-US trade environment has led to a valuation correction in certain stocks, resulting in a rise in market risk aversion. The market is expected to maintain a volatile trend in the short term [1]. Market Overview - The market is anticipated to remain volatile in the short term. The liquidity shock indicator for the CSI 300 index was 1.57, higher than the previous week's 1.36, indicating current market liquidity is 1.57 times the average level over the past year [2]. - The put-call ratio for the SSE 50 ETF options increased to 1.07 from 0.85, reflecting heightened caution among investors regarding the short-term performance of the SSE 50 ETF [2]. - The five-day average turnover rates for the SSE Composite Index and Wind All A were 1.42% and 1.93%, respectively, consistent with the trading activity levels since 2005 [2]. - The RMB exchange rate fluctuated last week, with onshore and offshore rates showing weekly changes of -0.05% and 0.29%, respectively [2]. - In September, China's CPI decreased by 0.3% year-on-year, slightly better than the previous -0.4%, but worse than the consensus expectation of -0.15%. The PPI was -2.3%, also better than the previous -2.9% but below the expected -2.4% [2]. - New RMB loans in September amounted to 1.29 trillion yuan, lower than the expected 1.39 trillion yuan but higher than the previous 590 billion yuan. M2 growth was 8.4%, below both the expected 8.51% and the previous 8.8% [2]. Technical Analysis - The SAR indicator for the Wind All A index broke downwards on October 17, indicating a bearish trend [2]. - The market score based on the moving average strength index is currently at 141, which is at the 49.9% percentile for 2023 [2]. - The sentiment model score is 2 out of 5, indicating moderate market sentiment, while the trend model signal is positive and the weighted model signal is negative [2]. Performance Summary - For the week of October 13-17, the SSE 50 index fell by 0.24%, the CSI 300 index dropped by 2.22%, the CSI 500 index decreased by 5.17%, and the ChiNext index declined by 5.71% [3]. - The overall market PE (TTM) stands at 22.0 times, which is at the 74.0% percentile since 2005 [3]. Industry Insights - The industry crowding levels are relatively high in sectors such as non-ferrous metals, comprehensive, power equipment, telecommunications, and electronics. The crowding levels in the steel and public utilities sectors have increased significantly [4].