Modelagem do comportamento ótimo dos bancos no mercado de reservas brasileiro

This paper uses numerical methods to solve bank’s cost minimization problem. Following Clouse e Dow (2002), we model bank’s behavior using stochastic dynamic programming. We take account of institutional aspects of Brazilian regime that influence the bank’s choice of reserves in the end of the day. The overlap of the account and accomplishment periods increases bank’s demand for reserves in the first three days of the accomplishment period. This result is different from the American market where the reserve demand has upward trend over the accomplishment period, except on Fridays. We show that reserve demand in Brazil would present smaller variance during the accomplishment period if the uncertainty about requirement in the first three days were abolished.