Estimating the Volatility of Discrete Stock Prices
离散股票价格的波动率估计AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要围绕股票波动率、离散报价和连续监测下的价格变动间隔展开,直接涉及波动率与高频计量。
反馈分类问题离散股票价格的波动率估计AI 解读 ↓
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ABSTRACT This paper introduces an estimator of stock price volatility that eliminates, at least asymptotically, the biases that are caused by the discreteness of observed stock prices. Assuming that the observed stock prices are continuously monitored, an estimator is constructed using the notion of how quickly the price changes rather than how much the price changes. It is shown that this estimator has desirable asymptotic properties, including consistency and asymptotic normality. Also, through a simulation study, the authors show that it outperforms natural estimators for the low‐ and middle‐priced stocks. Furthermoret, he simulation study demonstratest hat the proposed estimator is robust to certain misspecifications in measuring the time between price changes.