金融工程市场跟踪周报：关注补涨板块机会-20250816

• The report tracks quantitative sentiment indicators, including volume timing signals, which show optimistic views for major broad-based indices except for the Beixin 50 index, which is cautious[24][25] - The "HS300 Upward Stock Count Ratio" sentiment indicator is calculated as the proportion of HS300 constituent stocks with positive returns over the past N days. This indicator captures market sentiment and is effective in identifying upward opportunities but has limitations in predicting downward risks[25][26] - The "Momentum Sentiment Indicator" uses two smoothed lines (short-term and long-term) to track sentiment changes. When the short-term line exceeds the long-term line, it signals optimism in the market. Parameters include N=230, N1=50, and N2=35[28][29][32] - The "Moving Average Sentiment Indicator" evaluates the HS300 index's trend using eight moving averages (8, 13, 21, 34, 55, 89, 144, 233). When the closing price exceeds the values of more than five moving averages, it signals optimism[32][33][35] - Cross-sectional volatility analysis shows that the Alpha environment has improved in the short term for HS300, CSI500, and CSI1000 indices. However, over the past quarter, the Alpha environment remains average to poor based on historical volatility levels[37][41] - Time-series volatility analysis indicates an improvement in Alpha environment in the short term for HS300, CSI500, and CSI1000 indices. However, over the past quarter, the Alpha environment remains below average based on historical volatility levels[37][42]