中银量化大类资产跟踪：股指窄幅波动，微盘股实现显著正收益

• The report does not contain specific quantitative models or factors for analysis [1][2][3] - The report primarily focuses on market performance, style indices, valuation metrics, and fund flows without detailing quantitative models or factor construction [1][2][3] - Key metrics such as PE_TTM, ERP, and style index performance are discussed, but no explicit quantitative model or factor development process is provided [41][51][59]