Realized candlestick wicks
基于日内蜡烛图影线的已实现方差估计AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要利用日内价格蜡烛图估计积分方差并检测异常价格变动,直接对应高频计量与波动率。
基于日内蜡烛图影线的已实现方差估计AI 解读 ↓
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We develop a novel nonparametric estimator of integrated variance by summing up the squared wick lengths of intraday candlesticks over a fixed time interval. The proposed wick-based estimator is robust to short-lived extreme price movements, such as gradual jumps and flash crashes. We investigate the asymptotic properties of the proposed estimator, and show that its asymptotic variance is about four times smaller than the state-of-the-art differenced-return volatility (DV) estimator. We also develop a Hausman-type test for the presence of both jumps and episodic extreme price movements. Monte Carlo simulations and empirical applications further validate the practical reliability of our proposed estimator.