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Conditional volatility persistence and volatility spillovers in the foreign exchange market
Institution:College of Economics and Management, Nanjing University of Aeronautics and Astronautics, No.29 Jiangjun Avenue, Jiangning District, Nanjing, Jiangsu Province, 211106, China
Abstract:I investigate the magnitudes and determinants of volatility spillovers in the foreign exchange (FX) market, using realized measures of volatility and heterogeneous autoregressive (HAR) models. I confirm both meteor shower effects (i.e., inter-regional volatility spillovers) and heat wave effects (i.e., intra-regional volatility spillovers) in the FX market. Furthermore, I find that conditional volatility persistence is the dominant channel linking the changing market states of each region to future volatility and its spillovers. Market state variables contribute to more than half of the explanatory power in predicting conditional volatility persistence, with the model that calibrates volatility persistence and spillovers conditionally on market states performing statistically and economically better. The utilization of market state variables significantly extends our understanding of the economic mechanisms of volatility persistence and spillovers and sheds new light on econometric techniques for volatility modeling and forecasting.
Keywords:Conditional volatility persistence  Volatility spillover  Market states  Foreign exchange market
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