Beyond the Traditional VIX: A Novel Approach to Identifying Uncertainty Shocks in Financial Markets
超越传统 VIX:金融市场不确定性冲击的新识别方法AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要以 VIX 和波动率度量为核心,并明确处理金融收益的厚尾与极端变动,支持波动率及尾部风险分类。
超越传统 VIX:金融市场不确定性冲击的新识别方法AI 解读 ↓
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We introduce a new identification strategy for uncertainty shocks to explain macroeconomic volatility in financial markets. The Chicago Board Options Exchange Volatility Index (VIX) measures market expectations of future volatility, but traditional methods based on second-moment shocks and time-varying volatility of the VIX often fail to capture the non-Gaussian, heavy-tailed nature of asset returns. To address this, we construct a revised VIX by fitting a double-subordinated Normal Inverse Gaussian Levy process to S&P 500 option prices, providing a more comprehensive measure of volatility that reflects the extreme movements and heavy tails observed in financial data. Using an axiomatic approach, we introduce a general family of risk-reward ratios, computed with our revised VIX and fitted over a fractional time series to more accurately identify uncertainty shocks in financial markets.
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