量化择时和拥挤度预警周报（20250928）：市场下周或出现震荡-20250928

• Liquidity shock indicator for CSI 300 index reached 1.86 on Friday, higher than the previous week's 1.33, indicating current market liquidity is 1.86 times the standard deviation above the past year's average level [7] - PUT-CALL ratio for SSE 50ETF options declined to 0.91 on Friday, lower than the previous week's 1.14, reflecting reduced investor caution regarding short-term movements of SSE 50ETF [7] - Five-day average turnover rates for SSE Composite Index and Wind All A Index were 1.27% and 1.91%, respectively, corresponding to the 75.73% and 81.47% percentiles since 2005, showing decreased trading activity [7] - SAR indicator for Wind All A Index showed a positive breakout on September 11 [10] - Moving average strength index for Wind All A Index scored 150, at the 53.3% percentile for 2023, indicating a fluctuating trend [10] - Sentiment model score was 1 out of 5, trend model signal was positive, and weighted model signal was negative [10] - Small-cap factor crowding score was 0.40, low-valuation factor crowding score was -0.67, high-profitability factor crowding score was -0.10, and high-growth factor crowding score was 0.15 [18] - Sub-scores for small-cap factor included valuation spread (1.08), pairwise correlation (0.06), market volatility (-0.42), and return reversal (0.85) [18] - Sub-scores for low-valuation factor included valuation spread (-1.25), pairwise correlation (-0.03), market volatility (-0.09), and return reversal (-1.32) [18] - Sub-scores for high-profitability factor included valuation spread (-0.17), pairwise correlation (0.14), market volatility (-0.84), and return reversal (0.48) [18] - Sub-scores for high-growth factor included valuation spread (1.91), pairwise correlation (0.46), market volatility (-0.94), and return reversal (-0.82) [18]