Group 1: Report Industry Investment Rating - Not provided in the content Group 2: Report's Core View - The overall stock strategy can be treated with cautious optimism. In the short term, the market is oscillating to digest profit - taking chips, and the medium - term oscillating upward pattern remains unchanged. Recently, be vigilant about the callback of over - traded sectors and pay attention to the impact of economic data and earnings reports on the fundamentals. Currently, the sentiment repair is relatively optimistic, the returns of medium and large - cap stocks are strengthening, the profit - making ability outside the index is poor, the basis is continuously converging, and the intraday Alpha and trading - type Alpha environments have not yet recovered. The basis cost is good, the excess environment is weak, and the tail risk is moderately high [11]. - For the long - only stock strategy, currently, it is advisable to increase positions in trading - type Alpha or intraday Alpha, and strictly control the proportion of component stocks in the long - only stock strategy with a high proportion of component stocks and a low exposure to small and micro - cap stocks. For the neutral strategy, it is recommended to seize the low - cost position - building window and increase positions in strategies that replicate T and strictly control exposure without relying on the return contribution of small and micro - cap stocks (mixed neutral strategies with basis management and index T strategies), but the cost - effectiveness of increasing positions in neutral strategies whose main returns rely on the contribution of small and micro - cap stocks is relatively low at this time [11]. Group 3: Summary by Relevant Catalogs 3.1 Equity Market Review - **Factor Calendar Overview**: As of January 16, 2026, most broad - based indices rose this week. The CSI 500 index rose 2.18%, the CSI 1000 index rose 1.27%, the CSI 2000 index rose 0.94%, the CSI All - Share index rose 0.47%, the CSI A500 rose 0.13%, the Shanghai - Shenzhen 300 index fell 0.57%, and the CSI Dividend fell 1.78%. Among the Barra style factors, the top three performing factors were BETA (1.34%), growth (0.53%), and momentum (0.26%); the bottom three were liquidity (- 0.53%), residual volatility (- 0.73%), and size (- 0.90%) [16]. - **Main Broad - based Index Review**: Most broad - based indices rose and most volatilities declined this week. The short - term, medium - term market activity is at a medium - high level. As of January 16, 2026, the average daily trading volume of the CSI All - Share index was 3.40 trillion yuan in the current 5 - day rolling average, and 2.51 trillion yuan in the current 20 - day rolling average [18][23][27]. - **Equity Industry Index Review**: This week, 41.9% of industries achieved positive returns, with the computer sector leading. The top three industries with the highest weekly returns were computer (3.82%), electronics (3.77%), and non - ferrous metals (3.03%); the bottom three were agriculture, forestry, animal husbandry and fishery (- 3.27%), real estate (- 3.52%), and national defense and military industry (- 4.92%) [28][29]. - **Equity Style Factor Review**: Among the Barra style factors, BETA, growth, and momentum factors performed well, while liquidity, residual volatility, and size factors performed poorly. Among the Giant Tide style indices, half of them rose. The top three indices with the highest returns were small - cap growth (3.61%), mid - cap growth (3.15%), and small - cap value (0.69%); the bottom three were large - cap growth (- 0.03%), mid - cap value (- 0.13%), and large - cap value (- 2.81%) [33][39]. - **Stock Index Futures Market Review**: The discount converged, and most volatilities rose. The basis of IF, IC, and IM all converged. The estimated impact of each contract's hedging on the average return of neutral products this week was - 0.10% for 300 neutral, - 0.17% for 500 neutral, and - 0.48% for 1000 neutral. Since the beginning of this year, it has been - 0.41% for 300 neutral, - 0.66% for 500 neutral, and - 0.86% for 1000 neutral [41][46]. - **Options Market Review**: The implied volatility generally increased this week, which is expected to be beneficial for option - buying and arbitrage strategies [50]. 3.2 Strategy Environment Monitoring - **Intraday Alpha Environment for Neutral and Index - Enhancement Strategies**: Overall, it is conducive to the accumulation of intraday Alpha in terms of liquidity, volatility, and the proportion of high - volatility stocks, but the net outflow of funds is not conducive to the accumulation of intraday Alpha [55][58][61]. - **Trading - Type Alpha Environment for Neutral and Index - Enhancement Strategies**: Overall, it is not conducive to the accumulation of trading - type Alpha. Although factors such as trading volume, turnover rate, and differentiation degree are beneficial, the mid - cap style and the decrease in the number of stocks that can beat the benchmark index are significantly unfavorable [64][70]. - **Holding - Type Alpha Environment for Neutral and Index - Enhancement Strategies**: The overall environment shows that it is not conducive to the accumulation of holding - type Alpha, but some factors such as the number of limit - up and limit - down stocks, liquidity, and volatility are expected to be beneficial for Alpha accumulation [76][88][91]. - **Neutral Strategy Hedging Environment Monitoring**: The basis volatility slightly decreased, and the cost control pressure increased [104]. 3.3 Future Strategy Judgement - **20 - day Rolling Returns**: As of January 16, 2026, the relative returns of the CSI 1000, CSI 2000, and CSI 500 to the Shanghai - Shenzhen 300 were in extremely high intervals, while the return of the Shanghai - Shenzhen 300 was in a relatively high interval [106]. - **Derivatives Option Sentiment Dimension**: The sentiment of the CSI 1000, Shanghai - Shenzhen 300, and CSI 500 is generally cautious but structurally differentiated, with the sentiment of the Shanghai - Shenzhen 300 being significantly bullish [110]. - **Derivatives Futures Sentiment Dimension**: The sentiment of the CSI 1000, Shanghai - Shenzhen 300, and CSI 500 is generally optimistic, and the basis of IF, IC, and IM converged, indicating that the market sentiment has recovered [113]. - **Risk Preference**: As of January 15, 2026, the margin trading balance was 2.70 trillion yuan, at an extremely high level in the past three years, indicating a high risk preference [116]. - **Style Attention Multiples**: Currently, the CSI 1000 is in a normal interval, the CSI 2000 is in a lower interval, and the CSI 500 is in an extremely high interval [122]. - **Profit Spread**: As of January 16, 2026, the profit spreads of the CSI 1000, CSI 500, CSI 2000, and Shanghai - Shenzhen 300 were in lower, extremely low, extremely low, and extremely low intervals respectively [123]. - **Dividend Spread**: As of January 16, 2026, the dividend spreads of the CSI 1000, CSI 500, CSI 2000, and Shanghai - Shenzhen 300 were all in normal intervals [127]. - **Trading Congestion of Small and Micro - Cap and TMT**: As of January 16, 2026, the trading heat of the TMT sector was in a relatively high interval, the trading heat of small and micro - cap sectors was in a normal interval, and the total market trading volume was in an extremely high interval [130].