Risk‐Free Rates and Variance Futures Prices
研究了无风险利率与市场预期波动率之间的负向线性关系，利用标普500指数方差期货和LIBOR数据验证模型，发现该关系随经济周期变化且方差风险溢价是重要组成部分。
Abstract This paper investigates the relation between risk‐free rates and ex‐ante market volatility. It derives a theoretical model implying a negative linear relation between risk‐free rates and variance futures prices. The latter are employed as a direct market‐based ex‐ante estimate of risk‐neutral volatility. Empirical analysis, conducted using LIBOR and variance futures prices written on the S&P 500 index, indicates that the predictions of the model are supported by the data. The paper also provides evidence that, first, this negative relation varies smoothly over time following business cycles, and, second, the variance risk premium is a significant component of this documented relation. © 2015 Wiley Periodicals, Inc. Jrl Fut Mark 36:943–967, 2016