金融工程日报：市场缩量反弹，创业板指领涨、AI硬件方向集体反弹-20250911

The provided content does not contain any specific quantitative models or factors, nor does it include their construction processes, formulas, evaluations, or backtesting results. The documents primarily focus on market performance, sector analysis, investor sentiment, capital flows, ETF premiums/discounts, block trading, and institutional activities. These are descriptive analyses and do not involve quantitative modeling or factor-based strategies.