We investigate market-implied rating changes for AAA-rated sovereign issuers in the course of the Lehman and the Euro-sovereign crisis. Credit scores can be derived from the dynamics of CDS spread thanks to a time-dependent boundary model. They were successful in explaining rating changes for...

In commodity and energy markets swing options allow the buyer to hedge against futures price fluctuations and to select its preferred delivery strategy within daily or periodic constraints, possibly fixed by observing quoted futures contracts. In this paper we focus on the natural gas market and...

We present a stochastic-local volatility model for derivative contracts on commodity futures able to describe forward-curve and smile dynamics with a fast calibration to liquid market quotes. A parsimonious parametrization is introduced to deal with the limited number of options quoted in the...

Market-implied ratings gained importance as efficient early warnings of official credit rating migrations. We build a two-dimensional implied rating system that gathers information from both the bond and the CDS markets. The system is able to outdo each of the corresponding one-dimensional...

This paper presents a new default risk model for market risk that is consistent with the requirements put forward by the Fundamental Review of the Trading Book. In particular, the model features correlated default times and stochastic recovery rates by exploiting the observed correlation between...

In this work we deal with the funding costs rising from hedging the risky securities underlying a target volatility strategy (TVS), a portfolio of risky assets and a risk-free one dynamically rebalanced in order to keep the realized volatility of the portfolio on a certain level. The uncertainty...