Template-Type: ReDIF-Paper 1.0
Series: Tinbergen Institute Discussion Papers
Creation-Date: 2019-01-11
Number: 19-004/III
Author-Name: Francisco Blasques
Author-Email: f.blasques@vu.nl
Author-Workplace-Name: VU University Amsterdam 
Author-Name: Vladimir Holy
Author-Workplace-Name: University of Economics Prague
Author-Name: Petra Tomanova
Author-Workplace-Name: University of Economics Prague
Title: Zero-Inflated Autoregressive Conditional Duration Model for Discrete Trade Durations with Excessive Zeros 
Abstract: In finance, durations between successive transactions are usually modelled by the autoregressive conditional duration model based on a continuous distribution omitting frequent zero values. Zero durations can be caused by either split transactions or independent transactions. We propose a discrete model allowing for excessive zero values based on the zero-inflated negative binomial distribution with score dynamics. We establish the invertibility of the score filter. Additionally, we derive sufficient conditions for the consistency and asymptotic normality of the maximum likelihood of the model parameters. In an empirical study of DJIA stocks, we find that split transactions cause on average 63% of zero values. Furthermore, the loss of decimal places in the proposed model is less severe than in correct treatment of zero values in continuous models. 
Classification-JEL: C22; C41; C58 
Keywords: Financial High-Frequency Data; Autoregressive Conditional Duration Model; Zero-Inflated Negative Binomial Distribution; Generalized Autoregressive Score Model 
File-URL: https://papers.tinbergen.nl/19004.pdf
File-Format: application/pdf
File-Size: 572211 bytes
Handle: RePEc:tin:wpaper:20190004