Este artigo analisa, através de dados intradiários, coletados minuto a minuto, o efeito do dia de vencimento de contratos de opções de compra de ações sobre a negociação das ações subjacentes negociadas na Bolsa de Valores de São Paulo. Para tanto, foram usadas as séries de opções...

The paper presents a post-keynesian growth model in which (i) the mark-up rate varies in the long-term due to a misalignment between the actual rate and the 'anticipated' profit rate; and (ii) the capital-output ratio is not necessarily constant, on the contrary, it may shift as a result of the...

We consider a leader and a subordinate he appoints who engage in team production. The public observes the organization’s performance, but is unable to determine the separate contributions of the leader and of the subordinate. The leader may therefore claim credit for the good work of his...