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 recent real estate bubble was fuelled by non-risk adjusted lending policies, low interest rates and complex finance vehicles. Mortgage-backed securities (MBS) played a crucial role in the crisis. These vehicles were praised as liquid capital market instruments that allowed mortgage lenders...

Market frictions inhibit perfect replication of property derivatives and dene the property spreadas a price measure in the incomplete real estate market. We identify transaction costs, transactiontime and short sale constraints as the main frictions in this market. Based on these frictions,...

Changing noise levels have a severe impact on house prices and through the leveragein nancing on households wealth. This risk is essential for houses close to airportswith uncertain aircraft regimes. We design and calibrate real options based on aircraftnoise to hedge against noise risk. The...

We introduce a framework for analyzing the interplay between credit risk and collateralmarket risk on loan pricing. To do this, we decompose any loan into an unsecured and asecured part. Further we explicitly consider the recovery process. The framework allows usto develop semi-analytical...

This paper addresses the issue of intergenerational and internationalsharing of longevity and growth risks. Current research on worldwidedemographic changes highlights the importance of longevity risk on financialmarkets and the need to devise optimal hedging vehicles. We present a...

We study the robustness of block resampling procedures for time series. We first derive a setof formulas to quantify their quantile breakdown point. For the block bootstrap and the sub-sampling, we find a very low quantile breakdown point. A similar robustness problem arisesin relation to...

We study an equilibrium asset pricing model with several Lucas (1978) trees subject toevent risk, that is, the possibility that trees experience unexpected disasters. We exploit themarket clearing mechanism, in the presence of multiple positive net supply assets, to showthat the implications of...

A random variable dominates another random variable with respectto the covariance order if the covariance of any two monotone increasingfunctions of this variable is smaller. We characterize completely thecovariance order, give strong sufficient conditions for it, present a numberof examples in...

In this paper, we consider the coherent theory of (epistemic) uncertainty ofWalley, in whichbeliefs are represented through sets of probability distributions, and we focus on the problemof modeling prior ignorance about a categorical random variable. In this setting, it isa known result that a...