- The "Hong Kong Stock Selection Portfolio" strategy is constructed based on a dual-layer selection process that combines fundamental and technical analysis. The initial stock pool is built using analyst recommendation events, such as upward earnings revisions, first-time coverage, and unexpected positive research report titles. From this pool, stocks with both fundamental support and technical resonance are selected to form the portfolio. The backtesting period is from January 1, 2010, to June 30, 2025, with an annualized return of 19.11% and an excess return of 18.48% relative to the Hang Seng Index after considering transaction costs in a fully invested state [14][16] - The "Stable New High Stock Screening" factor is constructed to identify stocks that have recently reached a 250-day high and exhibit stable price paths. The 250-day new high distance is calculated as follows: $ 250\text{-day new high distance} = 1 - \frac{Close_t}{ts\_max(Close, 250)} $ Where $ Close_t $ is the latest closing price, and $ 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 a decline from the peak. Stocks are further filtered based on analyst attention (at least five buy or overweight ratings in the past six months), relative strength (top 20% in 250-day returns), price stability (evaluated using price path smoothness and 250-day new high distance averages over 120 days), and trend continuation (average 250-day new high distance over the past five days). The top 50 stocks are selected based on these criteria [23][24] - The backtesting results for the "Hong Kong Stock Selection Portfolio" show an annualized return of 19.11%, an excess return of 18.48% relative to the Hang Seng Index, and a maximum drawdown of 23.73% over the entire sample period. The information ratio (IR) is 1.22, with a tracking error of 14.55% and a return-to-drawdown ratio of 0.78 [20] - The "Stable New High Stock Screening" factor identified stocks primarily in the cyclical sector (9 stocks), followed by financials (4 stocks), technology (3 stocks), manufacturing (3 stocks), and consumer sectors (3 stocks) during the recent period. Specific stocks include Global New Material International and others [23][24]

- The "Hong Kong Stock Selection Portfolio" model aims to construct a portfolio by dual-layer screening based on fundamental and technical aspects of stocks recommended by analysts. The analyst recommendation pool is built using events such as upward revisions of earnings forecasts, initial analyst coverage, and unexpected positive research report titles. Stocks with both fundamental support and technical resonance are selected for the portfolio. The backtesting period is from January 1, 2010, to June 30, 2025, with an annualized return of 19.11% and an excess return of 18.48% relative to the Hang Seng Index [14][16][18] - The "Stable New High Stock Screening" factor identifies stocks that have reached a 250-day high in the past 20 trading days. The screening process includes criteria such as analyst attention (at least five buy or overweight ratings in the past six months), relative stock strength (top 20% in 250-day returns), and stock price stability. Stability is measured using metrics like price path smoothness and the average 250-day high distance over the past 120 days. Stocks are ranked, and the top 50% are selected, with a minimum of 50 stocks [21][23][24] - The formula for calculating the "250-day high distance" is: $ 250\text{-day high distance} = 1 - \frac{\text{Close}_{t}}{\text{ts\_max}(\text{Close}, 250)} $ where $\text{Close}_{t}$ represents the latest closing price, and $\text{ts\_max}(\text{Close}, 250)$ is the maximum closing price over the past 250 trading days. A value of 0 indicates a new high, while positive values represent the degree of fallback from the high [23][24] - The backtesting results for the "Hong Kong Stock Selection Portfolio" model show annualized returns of 19.11%, excess returns of 18.48%, and various performance metrics such as IR of 1.22, tracking error of 14.55%, and maximum drawdown of 23.73% [20][16][18] - The "Stable New High Stock Screening" factor identified stocks across sectors, with the highest number in the cyclical sector (7 stocks), followed by consumer (5 stocks), financial (3 stocks), manufacturing (3 stocks), technology (3 stocks), and healthcare (1 stock) [23][24][28]