Bayesian Modeling and Forecasting of 24-Hour High-Frequency Volatility
全天候高频波动率的贝叶斯建模与预测AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要直接使用五分钟指数期货收益建模和预测随机波动率,明确对应金融高频计量与波动率研究。
全天候高频波动率的贝叶斯建模与预测AI 解读 ↓
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This article estimates models of high-frequency index futures returns using “around-the-clock” 5-min returns that incorporate the following key features: multiple persistent stochastic volatility factors, jumps in prices and volatilities, seasonal components capturing time of the day patterns, correlations between return and volatility shocks, and announcement effects. We develop an integrated MCMC approach to estimate interday and intraday parameters and states using high-frequency data without resorting to various aggregation measures like realized volatility. We provide a case study using financial crisis data from 2007 to 2009, and use particle filters to construct likelihood functions for model comparison and out-of-sample forecasting from 2009 to 2012. We show that our approach improves realized volatility forecasts by up to 50% over existing benchmarks and is also useful for risk management and trading applications. Supplementary materials for this article are available online.