Price and volatility co-jumps
价格与波动率的共同跳跃AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要使用逐笔交易估计瞬时方差、识别共同跳跃,并讨论风险溢价,直接对应高频计量、波动率和资产定价。
价格与波动率的共同跳跃AI 解读 ↓
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The nature of the dependence between discontinuities in prices and contemporaneous discontinuities in volatility (co-jumps) has been reported by many as being elusive, in terms of sign, magnitude, and statistical significance. Using a novel identification strategy in continuous time relying on trade-level information for spot variance estimation, as well as infinitesimal cross-moments, we document that a sizeable proportion of discontinuous changes in prices are associated with strongly anti-correlated, contemporaneous, discontinuous changes in volatility. Assuming a possibly nonmonotonic pricing kernel, we illustrate the equilibrium implications of price and volatility co-jumps for return and variance risk premia.