Limit Laws in Transaction-Level Asset Price Models

Details Limit Laws in Transaction-Level Asset Price Models Limit Laws in Transaction-Level Asset Price Models

2011-04-05

arxiv.org/abs/1104.0841v1

Mathematics

Statistics Theory

Scientific paper

We consider pure-jump transaction-level models for asset prices in continuous time, driven by point processes. In a bivariate model that admits cointegration, we allow for time deformations to account for such effects as intraday seasonal patterns in volatility, and non-trading periods that may be different for the two assets. We also allow for asymmetries (leverage effects). We obtain the asymptotic distribution of the log-price process. We also obtain the asymptotic distribution of the ordinary least-squares estimator of the cointegrating parameter based on data sampled from an equally-spaced discretization of calendar time, in the case of weak fractional cointegration. For this same case, we obtain the asymptotic distribution for a tapered estimator under more

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