The purpose of this article is to explore the role of instruments in the transformation of institutional logics and their associated practices at the micro level. Based on an ethnographic study, this article compares two working groups — one responsible for equity and the other for...

La 4e de couv. indique : "La relation banque-entreprise est un actif stratégique. Cette relation permet de limiter les risques de rationnement qui peuvent survenir sur le marché du crédit. Elle permet aussi à l'entreprise de bénéficier d'une offre de financement adaptée à ses besoins....

We introduce a tractable class of non-affine price processes with multifrequency stochastic volatility and jumps. The specifi cations require few fixed parameters and deliver fast option pricing. One key ingredient is a tight link between jumps and volatility regimes, as asset pricing theory...