We consider the modelling of credit migration risk and the pricing of migration derivatives. To construct a Point-in-Time (PIT) rating migration matrix as the underlying value for derivative pricing we show first that the Affine Markov Chain models is not sufficient to generate PIT migration...

The strong autocorrelation between economic cycles demands that we analyze credit portfolio risk in a multiperiod setup. We embed a standard one-factor model in such a setup. We discuss the calibration of the model to Standard amp; Poor's ratings data in detail. But because single-period risk...

The Basel Committee on Banking Supervision (quot;the Committeequot;) released a consultative document that included a regulatory capital charge for operational risk. The complexity of the object quot;operational riskquot; led from the time of the document's release to vigorous and recurring...

We introduce a framework that analyzes the interplay of credit risk and collateral market risk on loan pricing. That for, we decompose any loan in unsecured and secured part. We further consider explicitly the recovery process. The framework allows us to develop semi-analytical pricing formulas...

Comparing realized dividends with dividend forecasts, we propose to describe dividend risk by a truncated t-distribution. We then investigate the impact of dividend uncertainty on European and American option prices. We find that the impact of dividend uncertainty on option prices is negligible...

We present a multi-period mean-variance optimization program which allows for a joint optimization of the balance and off-balance sheet. Our first finding is the proof of a conjecture of Li and Ng (2000), Leippold, Trojani and Vanini (2004, 2003) about the equivalence of the original...

We investigate how buyer-supplier firm-specific relationships affect security prices. We propose a structural model of firm dependence in a vertically connected network of firms based on cash flow transfers between buyers and suppliers. We prove that financial market completeness in a closed...

We show that for a production unit of a bank with well-defined workflows operational risk can be unambiguously defined and quantitatively modelled. The results of this modelling exercise are relevant for the implementation of a risk management framework: It turns out, that only a small share of...

The Basel Committee on Banking Supervision (quot;the Committeequot;) released a consultative document that included a regulatory capital charge for operational risk. Since the release of the document, the complexity of the concept of quot;operational riskquot; has led to vigorous and recurring...

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