撰写品种：建材（螺纹、玻璃） 撰写时间： 2025.05.12 回顾周期：2025.05.05- 2025.05.09 研究员：张孟威 咨询证号（Z0020205） 建材周度报告 建材市场周报： 一、主要观点 本周（2025.05.05-05.09）建材继续维持下跌趋势，螺纹稍有抵抗，玻璃再创新低。 宏观方面，英美就关税贸易协定达成一致，成为关税战以来的首份协定，预示着市场 风险逐步减弱，资产波动率或均值回归。 螺纹现货成交周环比表现清淡，钢厂利润持续被压缩，虽然部分钢厂仍有微薄利 润，但整体产量周度环比有所下滑，随着传统淡季的逐步到来，剔除五一节假日影响 螺纹需求开始弱化，周度库存也有所累积，螺纹钢基本面边际走弱。玻璃方面，本周两 条产线冷修，产量环比下降，需求环比有所改善，但就一季度竣工面积数据来看，终端 地产仍较疲软，玻璃整体仍处在供大于求阶段，价格持续承压。 公司热线：028 6130 3163 研究所邮箱：institute@gjqh.com.cn 投诉：4006821188 综上，建材淡季逐渐到来，就周环比数据来看，基本面已经有开始走弱迹象，随着 宏观环境的逐步好转，市场风偏逐步转强，或许能对建材 ...

Core Insights - The paper "Bonds vs. Equities: Information for Investment" explores the structural relationships between common financial indicators such as stock volatility, asset volatility, credit spreads, leverage ratios, and Tobin's Q, and their connection to corporate investment behavior [2][3] Group 1: Key Findings - Credit spreads and asset volatility are the only indicators with a clear predictive direction for corporate investment: credit spreads negatively impact investment, while asset volatility positively influences it [2][3] - The positive relationship between asset volatility and corporate investment challenges the traditional view that uncertainty suppresses investment, providing a new perspective [3] - The study emphasizes that controlling for leverage does not adequately reveal the positive effect of asset volatility on corporate investment, questioning the common practice of treating leverage as a control variable [3] Group 2: Implications - The findings suggest that scholars in finance and macroeconomics, market practitioners, and policymakers should consider the structural relationships between common risk indicators and leverage when discussing market risk, capital structure, and investment analysis [4] - The research provides new insights for understanding and predicting corporate investment behavior, highlighting the importance of distinguishing between the signals conveyed by different financial indicators [4]