【金工】市场交易情绪回落——金融工程市场跟踪周报20260131（祁嫣然/张威）

Market Overview - The A-share market experienced narrow fluctuations this week, with the broad market index slightly rising while the mid and small-cap indices declined [4] - Major broad market indices showed a cautious signal in terms of volume indicators, with stock-type ETFs continuing to see net outflows [4] - Gold prices exhibited significant volatility, potentially leading to short-term adjustments in the resource sector and a decline in equity market sentiment due to tightening trading funds [4] Index Performance - The Shanghai Composite Index fell by 0.44%, while the Shanghai 50 rose by 1.13%, and the CSI 300 increased by 0.08%. The CSI 500 and CSI 1000 both dropped by 2.56% and 2.55%, respectively, and the ChiNext Index decreased by 0.09% [4] - As of January 30, 2026, the CSI 500, CSI 1000, and ChiNext Index were rated as "moderate" in terms of valuation, while the Shanghai Composite Index, Shanghai 50, and CSI 300 were rated as "dangerous" [4] Sector Analysis - According to the CITIC industry classification, the food and beverage sector and non-bank financials are rated as "safe" in terms of valuation [4] Volatility and Alpha Environment - The cross-sectional volatility of the CSI 300, CSI 500, and CSI 1000 index constituents increased compared to the previous week, indicating an improvement in the short-term Alpha environment [5] - The time series volatility for the CSI 300 index constituents also increased, while the CSI 500 remained unchanged, and the CSI 1000 saw a decline, suggesting a deterioration in its Alpha environment [5] Fund Flow Insights - The top five stocks attracting institutional attention this week were Jingzhida (170 institutions), Jiangsu Bank (135), Aerospace Hongtu (101), Nanjing Bank (76), and Keda Manufacturing (74) [6] - During the trading period from January 26 to January 30, 2026, southbound funds recorded a net inflow of HKD 2.708 billion, with the Shanghai-Hong Kong Stock Connect seeing a net outflow of HKD 1.921 billion and the Shenzhen-Hong Kong Stock Connect a net inflow of HKD 4.629 billion [6] ETF Performance - The median return for stock-type ETFs this week was -1.02%, with a net outflow of CNY 318.882 billion. In contrast, cross-border ETFs had a median return of 0.86% with a net inflow of CNY 0.784 billion, while Hong Kong ETFs saw a median return of -1.15% with a net inflow of CNY 0.859 billion. Commodity ETFs had a median return of 4.56% with a net inflow of CNY 24.297 billion [7]