I present a fully-rational symmetric-information model of an IPO, as well as a dynamic imperfectly competitive model of the aftermarket trading that follows. The model helps explain why IPO share allocations favor large institutional investors. It also helps to explain IPO underpricing, and...

This paper analyzes a financial market with noise trading and momentum trading, and shows how momentum trading affects the market equilibrium. When momentum traders dominate the market, whether trend-chasing or contrarian, the private information owned by informed trader is not incorporated into...

We show that in a representative agent model with a constant risk premium, the uncovered interest parity (UIP) test coefficient can be expressed as a function of the variables and parameters of the prevailing exchange rate expectations mechanism. Taking into account the market microstructure,...

In this paper we examine the connection of microscopic network properties of trading and macroscopic properties of prices. Using intraday trading data from the London Stock Exchange, we are able to track which institutions traded with which and reconstruct the network of exchanged stocks. We...

This paper presents an adaptive learning model for market-making under the reinforcement learn-ing framework. Reinforcement learning is a learning technique in which agents aim to maximize the long-term accumulated rewards. No knowledge of the market environment, such as the order arrival or...

We adapt the continuous time random walk (CTRW) formalism to describe the asset price evolution. We show some of the problems that can be treated using this approach. We basically focus on two aspects: (i) the derivation of the price distribution from high-frequency data; and (ii) the inverse...

If strong and persistent misalignments of the exchange rate are caused by non-fundamental influences, such that a return to equilibrium is hampered by a coordination failure among fundamentals-based traders, then central bank intervention may act as a coordinating signal, encouraging stabilizing...

We present an spectral numerical method for the numerical valuation of bonds with embedded options. We use a CIR model for the short term interest rate. The method is based in a Galerkin formulation of the relevant partial differential equation for the value of the bond discretized by means of...