In-sample asymptotics and across-sample efficiency gains for high frequency data statistics. (English) Zbl 07659823
Summary: We revisit in-sample asymptotic analysis extensively used in the realized volatility literature. We show that there are gains to be made in estimating current realized volatility from considering realizations in prior periods. The weighting schemes also relate to Kalman-Bucy filters, although our approach is non-Gaussian and model-free. We derive theoretical results for a broad class of processes pertaining to volatility, higher moments, and leverage. The paper also contains a Monte Carlo simulation study showing the benefits of across-sample combinations.
MSC:
| 62P20 | Applications of statistics to economics |
References:
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