Comment on: Price Discovery in High Resolution

This note is commenting on Hasbrouck (2018). The paper investigates the problem of price discovery on markets with trades recorded at sub-millisecond frequencies. The application of the popular information share measure of Hasbrouck (1995) to such data faces several difficulties, as the underlying VECM would need a huge number of lags to capture dynamics at different time-scales. The problem is handled by imposing a set of restrictions on parameters inspired by the Heterogeneous Autoregressive model for realized volatility. We illustrate some potential drawbacks of the information share measure adopted in the paper and propose a modelling strategy aimed at dealing with such limitations. In particular, we introduce a structural multi-market model with a lagged adjustment mechanism describing lagged absorption of information across markets. The advantages of the method are shown in simulations.

Keywords: High-resolution, High-frequency trading, Information share, HAR, Lagged-adjustment

JEL Classification: C32, D58, G14

Suggested Citation: Suggested Citation

Buccheri, Giuseppe and Bormetti, Giacomo and Corsi, Fulvio and Lillo, Fabrizio, Comment on: Price Discovery in High Resolution (February 15, 2019). Available at SSRN: https://ssrn.com/abstract=3334860 or http://dx.doi.org/10.2139/ssrn.3334860