Semi Markov Model for Market Microstructure
25 Pages Posted: 6 May 2013
Date Written: May 6, 2013
Abstract
We introduce a new model for describing the fluctuations of a tick-by-tick single asset price. Our model is based on Markov renewal processes. We consider a point process associated to the timestamps of the price jumps, and marks associated to price increments. By modeling the marks with a suitable Markov chain, we reproduce the strong mean-reversion of price returns known as microstructure noise. Moreover, by using Markov renewal processes, we can model the presence of spikes in intensity of market activity, i.e. the volatility clustering, and consider dependence between price increments and jump times. We also provide simple parametric and nonparametric statistical procedures for the estimation of our model. We obtain closed-form formula for the mean signature plot, and show the diffusive behavior of our model at large scale limit. We illustrate our results by numerical simulations, and find that our model is consistent with empirical data on the Euribor future.
Keywords: Microstructure noise, High-frequency data, Markov renewal process, Signature plot, Scaling limit
JEL Classification: G10, C51
Suggested Citation: Suggested Citation
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