定量策略周报：择时信号转多，积极参与反弹

Group 1 - The report suggests a bullish stance on A-shares with a half-position strategy, anticipating a continuation of the rebound and recommending a switch to the 1000 index after the Spring Festival [1][30] - The report maintains a positive outlook on Hong Kong stocks, citing a recovery in the fundamentals and a cautious but optimistic sentiment in the market [2][32] - For U.S. stocks, a half-position bullish strategy is recommended, as the market navigates between rising inflation and slight economic cooling, with opportunities in risk assets during fluctuations [3][29] Group 2 - A-shares are expected to experience a style shift from large-cap blue chips to small-cap growth stocks around the Spring Festival, with historical data indicating better performance for small-cap stocks post-festival [4][35] - The report highlights the effectiveness of industry rotation strategies in A-shares, with a focus on small-cap timing strategies for potential accumulation after the Spring Festival [4][35] - The report indicates that the current market environment allows for high trading volumes, which supports the effectiveness of the industry rotation strategy [4][35] Group 3 - The ETF portfolio for the week shows a 1.57% increase, with a year-to-date absolute return of 21.62%, outperforming the CSI 300 by 9.4% [5][38] - The report identifies strong technical performance in sectors such as materials, military, semiconductors, consumer electronics, batteries, and robotics, suggesting a focus on these areas for potential gains [5][38] - The report notes that the all-weather strategy has achieved a weekly increase of 0.75%, with a cumulative return of 3.12% and a new net value high [7][39]