S.p Kothari

• [2003 JFE] 公司到底用衍生品对冲了多少风险？——一把「故意往大了算」的尺子，量出了一个尴尬的小数How Much Do Firms Hedge with Derivatives?Jun 2026
• [1992 JFE] 股价的『过度波动』，也许只是我们没读懂它对股利的预期Stock Return Variation and Expected Dividends: A Time-series and Cross-sectional AnalysisJun 2026
• [1989 JFE] 「输家翻身」之谜：真相不是市场犯傻，而是 beta 偷偷换了脸Nonstationary Expected Returns: Implications for Tests of Market Efficiency and Serial Correlation in ReturnsJun 2026
• [1989 JFE] 换一把尺子量 beta，「小公司之谜」就消失了The Relation Between the Return Interval and Betas: Implications for the Size EffectJun 1989