ESTIMATING VOLATILITY FUNCTIONALS WITH MULTIPLE TRANSACTIONS
同一记录时点存在多笔交易时的波动率泛函估计AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究高频交易的重复记录时点及积分波动率、积分四次变差估计。
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The phenomenon of multiple transactions at each recording time is a common occurrence for high-frequency financial data because of the heavy trading of the market and limitation of the recording mechanism. This situation has existed for many years, but has become more common in recent years because of heavier trading. Surprisingly, there have been few studies on this important issue, in spite of some ad hoc approaches to treat multiple transactions. In this paper we investigate how to handle multiple transactions, particularly in the context of estimating the integrated volatility and integrated quarticity, which are of great interest in financial econometrics. Two approaches are proposed for this purpose, and their asymptotic properties are investigated. Their performances are confirmed by simulation studies. The estimators are also applied to some real world problems. The work represents only the first step in this direction, and some future research problems are discussed.