We propose several connectedness measures built from pieces of variance decompositions, and we argue that they provide natural and insightful measures of connectedness among financial asset returns and volatilities. We also show that variance decompositions define weighted, directed networks, so...

In June 2003 Swiss banks held over CHF 500 billion in mortgages. This important segment accounts for about 63% of all loan portfolios of Swiss banks. Since default insurance is not common in Switzerland, the corresponding risks are a severe threat for the health of the financial system. We...

We introduce an adaptive importance sampling method for the loss distribution of credit portfolios based on the Robbins-Monro stochastic approximation procedure. After presenting the subtle construction of the algorithm, we apply our adaptive scheme for calculating the risk figures of a typical...

We consider the modelling of credit migration risk and the pricing of migration derivativesour approach enlarges the traditional setup where credit risk is based on default solely.We implement the Regime Shifting Markov Mixture model developed in Andersson (2007)and Andersson and Vanini (2008)...

We consider the modelling of credit migration risk and the pricing of migrationderivatives. To construct a Point-in-Time (PIT) rating migration matrix as the underlyingvalue for derivative pricing we show first that the Affine Markov Chain models isnot sufficient to generate PIT migration...

The wide-ranging economic developments of the previous decade, e.g. the integration ofworld economies, have made a significant impact towards increasing the mobility of theworking populace and their families. At the same time, technological developments especiallyin the field of...

The increased need/wish for mobility amongst various sections of the society, particularlyamongst professionally active groups, is confronting credit institutions (banks) and otherenterprises offering financial services, with challenges to adjust their service portfolio in away to best suit the...

Mobile Commerce is gaining increasing acceptance amongst various sections of the society. Thisgrowth can be partly traced back to technological and demographical developments that have beeninfluencing important aspects of the socio-cultural behaviour in today’s world. The need/wish formobility...

Auch der Schweizer Finanzplatz wird sich im Zeichen des E-Commerce weiter verändern, um sich neuen Herausforderungen zu stellen. Wwer unter den alten und neuen Anbietern von Finanzdienstleistungen als Sieger aus diesem Transformationsprozess hervorgehen wird, ist schwierig zu prognostizieren...

The near-failure on September 16, 2008, of American International Group (AIG) was an iconic moment in the financial crisis. The decision to rescue AIG was controversial at the time and remains so. Large bets on real estate pushed AIG to the brink of bankruptcy. In one case, AIG used securities...