Security Bid/Ask Dynamics with Discreteness and Clustering : Simple Strategies for Modeling and Estimation
This paper proposes a dynamic model of bid and ask quotes that incorporates a stochastic cost of market-making, discreteness (restriction of quotes to a fixed grid) and clustering (the tendency ofquotes to lie on acirc;not;Snaturalacirc;not;? multiples of the tick size). The Gibbs sampler provides a convenient vehicle for estimation. The model is estimated for daily and intradaily US Dollar/Deutschemark Reuters quotes