市场环境因子跟踪周报（2026.01.16）：市场降温整固，成长优势延续-20260122

• The report tracks quantitative factors in the equity market, highlighting that the market style remains tilted towards small-cap and growth-oriented stocks, with increased volatility in style performance and widened return differences between styles[10][11] - In terms of market structure, the dispersion of excess returns across industries has risen, while industry rotation speed has decreased. The proportion of rising constituent stocks in indices like CSI 300 and CSI 500 has declined. Additionally, the concentration of trading in the top 100 stocks remained stable, while the top 5 industries saw a slight increase in trading concentration[10][11] - Market activity indicators show a decline in market volatility across most indices except CSI 1000, while turnover rates have continued to rise[10][11] - In the commodity market, the trend strength of precious metals and energy chemicals has increased, while other sectors have seen a decline. Basis momentum for precious metals and agricultural products has risen, whereas other sectors have declined. Volatility remains high for precious metals and base metals, with slight decreases in energy chemicals and black metals. Liquidity has decreased for precious metals and energy chemicals but increased for other sectors[23][28] - In the options market, implied volatility for SSE 50 and CSI 1000 has decreased from previous highs. The skewness of call options has declined, while that of put options has increased. Despite this, the skewness of CSI 1000 put options remains negative, indicating that market participants perceive a low risk of significant declines in small-cap stocks in the short term[31][32] - In the convertible bond market, the market experienced wide fluctuations. The premium rate for bonds convertible at par value has stabilized with slight adjustments, while the pure bond premium rate for debt-oriented groups has continued to rise. The proportion of low-conversion-premium bonds has also increased. However, trading volume in the market remains high and has not weakened[33][39]