主动量化周报：低估值反攻：科技回调，消费接力-2025-03-17

• The quant model used to estimate the activity level of speculative funds showed a decline in activity starting from March 7, indicating a shift from small-cap to large-cap stocks[11] - The GDPNOW model predicted a GDP growth rate of 4.1% for Q1 2025, showing stable marginal changes in macroeconomic forecasts[15] - The informed trader activity index indicated a cautious optimism among informed traders, with the index rising above zero[17] Model Backtesting Results - Speculative funds activity model, IR: 0.5, Sharpe ratio: 1.2, annualized return: 15%[11] - GDPNOW model, predicted GDP growth rate: 4.1%[15] - Informed trader activity index, current value: 0.0025[19] Factor Construction and Evaluation - Factor Name: EP Value; Construction Idea: Preference for high EP value and high dividend yield assets; Construction Process: Calculated using the formula $ EP = \frac{Earnings}{Price} $; Evaluation: Showed positive returns in the current week[27] - Factor Name: Momentum; Construction Idea: Short-term momentum stocks; Construction Process: Calculated using past price performance; Evaluation: Experienced a pullback in the current week[27] Factor Backtesting Results - EP Value factor, weekly return: 0.5%, monthly return: 1.2%, quarterly return: 3.5%[27] - Momentum factor, weekly return: -0.8%, monthly return: 0.9%, quarterly return: 2.1%[27]