港股投资周报：恒生科技短期调整，港股精选组合年内上涨7.14%-20260207

• The "Hong Kong Stock Selection Portfolio" model is constructed based on a dual-layer selection process that integrates fundamental and technical analysis. The stock pool is initially built using analyst recommendation events, such as upward earnings revisions, first-time coverage, and unexpected positive research report titles. Stocks with both fundamental support and technical resonance are selected to form the portfolio. The backtesting period spans from January 1, 2010, to December 31, 2025, with an annualized return of 19.08% and an excess return of 18.06% relative to the Hang Seng Index after considering transaction costs in a fully invested state[14][15][19] - The "Stable New High Stock Screening" factor is based on the concept of momentum and trend-following strategies, which are particularly effective in the Hong Kong stock market. The factor emphasizes stocks that have recently reached a 250-day high, with a specific calculation formula: $ 250\text{-day new high distance} = 1 - \frac{\text{Close}{t}}{\text{ts_max(Close, 250)}} $ Here, $\text{Close}{t}$ represents the latest closing price, and $\text{ts_max(Close, 250)}$ is the maximum closing price over the past 250 trading days. A value of 0 indicates a new high, while positive values indicate the degree of pullback from the high. Stocks are further filtered based on analyst attention, relative strength, price stability, and trend continuation metrics[20][22][23] - The backtesting results for the "Hong Kong Stock Selection Portfolio" model show an annualized return of 19.08%, an excess return of 18.06%, and an information ratio (IR) of 1.19 over the entire sample period. The maximum drawdown was 23.73%, with a tracking error of 14.60% and a return-to-drawdown ratio of 0.76[19] - The "Stable New High Stock Screening" factor identified stocks such as Nine Dragons Paper, with the highest number of stocks coming from the cyclical sector (14 stocks), followed by consumer, manufacturing, financial, technology, and pharmaceutical sectors. Specific stocks include Nine Dragons Paper, China Eastern Airlines, and Pacific Basin Shipping, among others[22][23][28]