周期风格占比提升，权益基金跑赢ETF——权益基金月度观察（2026/01）-20260213

• The report introduces a quantitative model for evaluating equity funds, using 22 benchmark indices as independent variables and fund returns as dependent variables. The model applies a rolling window regression with a 6-month window to calculate the R² matrix for each fund. The benchmark index with the highest average R² over the last six periods is selected as the reference index for fund performance evaluation[18][19][24] - The construction process of the model involves linear regression for each benchmark index and fund return, followed by rolling window regression to derive the R² matrix. The formula used is $ R² = 1 - \frac{\sum_{i=1}^{n}(y_i - \hat{y}i)^2}{\sum{i=1}^{n}(y_i - \bar{y})^2} $, where $ y_i $ represents fund returns, $ \hat{y}_i $ represents predicted returns, and $ \bar{y} $ represents the mean of fund returns[18][19][24] - The model is evaluated as effective in identifying the most relevant benchmark index for fund performance, providing a robust framework for fund classification and strategy analysis[18][24] - The backtesting results of the model show that the average R² value for equity funds decreased slightly from 0.7478 in December to 0.7336 in January, indicating a slight reduction in the fit of funds to single benchmark indices[34] - The report categorizes equity funds into five styles: large-cap, mid-small-cap, value, growth, and thematic sectors. The classification is based on the benchmark index with the highest R² value derived from the model[24][27][33] - The performance of mid-small-cap funds was the highest in January, with a median return of 8.18%, followed by growth funds at 7.08%, large-cap funds at 4.13%, value funds at 3.88%, and thematic sector funds at 3.37%[24][25][27] - The thematic sector funds are further divided into categories such as healthcare, cyclical, infrastructure, consumption, technology, finance, and advanced manufacturing. Among these, cyclical funds performed the best, with an average return of 21.6% for active funds and 18.2% for passive funds[27][30][32] - The report highlights high-rated funds, defined as AAA and AA+ funds, which demonstrate strong alpha sustainability and upward alpha trends. AAA funds are stable alpha-type funds suitable for long-term holdings, while AA+ funds exhibit steadily increasing alpha values, indicating strong potential for excess returns[47][48][49] - The report identifies new emerging funds, defined as funds receiving their first rating this month and managed by fund managers with less than three years of experience. These funds predominantly track indices such as CSI Dividend and CSI 300[63][64] - The report also highlights funds with significant rating upgrades, defined as funds whose ratings improved substantially compared to the previous month. These funds are primarily aligned with indices such as CSI Cyclical, CSI Dividend, and TMT (CITIC)[65][66]