In this paper we examine the question of whether knowledge of the information contained in a limit order book helps to provide economic value in a simple trading scheme. Using Dollar Sterling tick data, we find that despite the in-sample statistical significance of variables describing the structure of the limit order book in explaining tick-by-tick returns, they do not consistently add significant economic value out-of-sample. We show this using a simple linear model to determine trading activity, as well as a model-free genetic algorithm based on price, order flow, and order book information. We also find that the profitability of all trading rules based on genetic algorithms dropped substantially in 2008 compared to 2003 data.
JEL classification: D81, F31, C53Keywords: profitability, limit order book, high-frequency data, algorithmic trading $ We are grateful to an anonymous referee and Bruce Lehmann (the editor), whose insightful comments greatly improved the paper. We also thank Martin Evans, Matthijs Fleischer, Thierry Foucault, Lawrence Harris, Rich Lyons, Chris Neely, Carol Osler, Richard Payne, Dagfinn Rime, Lucio Sarno, Nick Webber and Paul Weller for their helpful comments and suggestions. We remain responsible for all errors.