The notion of statistical arbitrage introduced in Bondarenko (2003) is generalized to statistical G-arbitrage corresponding to trading strategies which yield positive gains on average in a class of scenarios described by a σ-algebra G. This notion contains classical arbitrage as a special case....

Shot-noise processes generalize compound Poisson processes in the following way: a jump (the shot) is followed by a decline (noise). This constitutes a useful model for insurance claims in many circumstances; claims due to natural disasters or self-exciting processes exhibit similar features. We...

Der Begriff Risiko ist heutzutage durch politische Bewegungen wie KonTraG und Basel II sowie spektakuläre Unternehmenszusammenbrüche in aller Munde. Dabei wird immer wieder darauf hingewiesen, dass die Unternehmen ganzheitliche integrierte Risikomanagement- und controllingsysteme installieren...

We propose a reduced form model for default that allows us to derive closed-form solutions to all the key ingredients in credit risk modeling: risk-free bond prices, defaultable bond prices (with and without stochastic recovery) and probabilities of survival. We show that all these quantities...

The traditional methods and techniques employed in operational management seem unable to provide solutions that can be actually practiced. This insufficiency is caused by the uncertainties and delays which are faced in practice. The potential causes of these uncertainties are usually internal...

Wieder ein imponierend faktenreiches, problemorientiertes Werk nach "Die roaring nineties" (BA 3/04) und "Die Schatten der Globalisierung" (BA 7/02) des Wirtschaftsnobelpreisträgers. Globalisierungsdebatte und die Einschätzungen des Autors haben sich nach dem 11.9.2001 und den folgenden...