Volatility (Dis)Connect in International Markets
研究发现消费差异与实际汇率的波动率相关性低于1但高于水平相关性，揭示了外汇市场与基本面之间的波动率脱节现象，并基于预期增长和波动率新闻冲击的国际风险分担提供解释。
Lack of comovement between consumption differentials and real exchange rates is a traditional indicator of a disconnect of foreign exchange markets from economic fundamentals. We present novel empirical evidence for the disconnect between the volatilities, as opposed to the levels, of these variables. The volatility correlations are below one, but they are larger than the level correlations. We discuss the economics of volatility disconnect anomaly in settings with complete and incomplete markets and provide an explanation of our empirical findings based on international risk sharing of expected growth and volatility news shocks. This paper was accepted by Tomasz Piskorski, finance. Funding: Y. Liu was supported by the NSFC Excellent Young Scientists Fund [Grant 72422011]. Supplemental Material: The online appendices and data files are available at https://doi.org/10.1287/mnsc.2023.03930 .