——金融工程市场跟踪周报20251222：基本面驱动或为当前主要交易方向-20251223

• Quantitative sentiment tracking includes volume timing signals The volume timing signals for major indices as of December 19, 2025, indicate a cautious outlook across all indices, including the Shanghai Composite Index, Shanghai 50, CSI 300, CSI 500, CSI 1000, ChiNext Index, and Beijing 50 Index [22][23] - Market sentiment indicator: CSI 300 rising stock ratio The CSI 300 rising stock ratio is calculated as the proportion of constituent stocks with positive returns over the past N days. This indicator captures market sentiment, identifying opportunities during market bottoms and potential risks during overheated phases. As of December 19, 2025, the indicator rose above 60%, reflecting high market sentiment [23][24] - CSI 300 rising stock ratio timing strategy The timing strategy smooths the indicator using two different windows (N1=50, N2=35). When the short-term smoothed line exceeds the long-term smoothed line, it signals a bullish market outlook. Conversely, when the short-term line falls below the long-term line, it indicates a neutral stance. As of December 19, 2025, the short-term line was below the long-term line, suggesting a cautious market outlook [25][27] - Moving average sentiment indicator The moving average sentiment indicator uses eight moving averages (8, 13, 21, 34, 55, 89, 144, 233) to assess the trend state of the CSI 300 Index. The indicator assigns values based on the position of the current price relative to the moving averages. As of December 19, 2025, the CSI 300 Index was in a non-prosperous sentiment zone [31][34] - Cross-sectional volatility analysis Cross-sectional volatility for CSI 300, CSI 500, and CSI 1000 indices showed mixed trends. Over the past week, CSI 300 volatility decreased, indicating a deteriorating short-term alpha environment, while CSI 500 and CSI 1000 volatility increased, suggesting improved short-term alpha conditions. Quarterly averages for these indices were in the upper-middle range of the past six months, reflecting a favorable alpha environment [35][36] - Time-series volatility analysis Time-series volatility for CSI 300, CSI 500, and CSI 1000 indices increased over the past week, indicating an improved alpha environment. Quarterly averages for these indices were also in the upper-middle range of the past six months, suggesting a relatively favorable alpha environment [36][39]