Composite likelihood estimation of stationary Gaussian processes with a view toward stochastic volatility

Mikkel Bennedsen, Kim Christensen and Peter Christensen

Papers from arXiv.org

Abstract: We develop a framework for composite likelihood inference of parametric continuous-time stationary Gaussian processes. We derive the asymptotic theory of the associated maximum composite likelihood estimator. We implement our approach on a pair of models that has been proposed to describe the random log-spot variance of financial asset returns. A simulation study shows that it delivers good performance in these settings and improves upon a method-of-moments estimation. In an application, we inspect the dynamic of an intraday measure of spot variance computed with high-frequency data from the cryptocurrency market. The empirical evidence supports a mechanism, where the short- and long-term correlation structure of stochastic volatility are decoupled in order to capture its properties at different time scales.

Date: 2024-03
New Economics Papers: this item is included in nep-ecm, nep-ets and nep-rmg
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