The present paper provides conditions for the consistency among different orderings which may be defined on sets of financial portfolios; in particular, a different reading key for some classical results is proposed. Besides arbitrage (whose impossibility is necessary and sufficient for...

There is a wide literature about the behaviour of agents in a stock-market in the presence of imitation phenomena. Some issues may be treated in a game-theory context. In particular, we consider a micro-model of stock-market speculator and formalise it in a Stackelberg game. The problem consists...

Purpose – Recently numerous mergers have been realized. The paper aims to discuss famous static models about the exchange ratio. The paper then seeks to propose a simple dynamical model to valuate both the immediate merger's effects and the delayed ones. Design/methodology/approach – The...

In the last few decades, large retailers have become increasingly important and have radically altered the way value is created along the supply chain. Large retailers now control several phases of the production chain, through, among others, private labels and certification standards. The aim...