量化市场追踪周报（2024W39-40）：多空博弈较为剧烈，小盘成长风格受青睐

• The report primarily focuses on tracking quantitative market trends and fund flows, highlighting the significant net inflows into various ETFs, including broad-based, sectoral, and thematic ETFs, with a total net inflow of approximately 1588.78 billion yuan this week[3][36][60] - Broad-based ETFs saw the largest inflows, totaling 1415.65 billion yuan, with notable contributions from products like the E Fund ChiNext ETF (328.16 billion yuan) and the Huatai-PineBridge CSI 300 ETF (177.13 billion yuan)[36][60] - Sectoral ETFs also experienced net inflows of 191.83 billion yuan, with TMT (Technology, Media, and Telecom) leading at 120.64 billion yuan, followed by Consumer and Cyclical Manufacturing sectors[36][60] - Thematic and style ETFs, however, recorded net outflows of 18.71 billion yuan, with specific products like the ChinaAMC ChiNext Momentum Growth ETF and Western Profit ChiNext Large-Cap ETF showing relatively higher inflows within this category[36][60] - The report also mentions the development of an industry rotation model based on the marginal changes in holdings of high-performing funds, which has demonstrated better risk-return characteristics compared to momentum and sentiment-based strategies during the current stock-driven market phase[31][34][33]