We propose a portfolio credit risk model with dependent loss given default (LGD) which allows for a reasonable economic interpretation and can easily be applied to real data. We build up a precise mathematical framework and stress some general important issues when modeling dependent LGD. Finally, we calibrate the model based on American bond data from 1982 to 2001 and compare the results with ...

financial literacy of investors reduces uncertainty on future decisions and increases predictability of investment policies in financial markets. thus, the lack of clear information on financial markets is a determining factor in the arrival of domestic and foreign capitals and their quick exit in case of crisis. the lack of transparency and basic knowledge on decisions and failure to provide r...

We establish a functional large deviation principle and a functional moderate deviation principle for Markov-modulated risk models with reinsurance by constructing an exponential martingale approach. Lundberg’s estimate of the ruin time is also presented.

In this paper we develop a symbolic technique to obtain asymptotic expressions for ruin probabilities and discounted penalty functions in renewal insurance risk models when the premium income depends on the present surplus of the insurance portfolio. The analysis is based on boundary problems for linear ordinary differential equations with variable coefficients. The algebraic structure of the G...

In the individual risk model, the total claims on a portfolio of insurance contracts is the random variable of interest. The total claims is modelled as the sum of all claims on the individual policies, which are assumed independent. We present several techniques, such as convolution and recursions, to obtain results in this model.

The overall timetable reliability is a measure of the likely performance of the timetable as a whole, in terms of schedule adherence. The reliability of arrivals is a critical performance measure for all rail markets. This paper presents analytically based models designed to quantify the amount of delay risk associated with each track segment, train and the schedule as a whole. Three main types...

Various probabilistic techniques, which are used in the modeling of derivative securities (in particular, zero-coupon bonds) that are subject to default risk are presented in a systematic way. A large class of existing models of the defaultable term structure is covered by our analysis, in addition, some new ideas are presented.

The defective renewal equation satisfied by the Gerber-Shiu discounted penalty function in the renewal risk model with arbitrary interclaim times is analyzed. The ladder height distribution is shown to be a mixture of residual lifetime claim severity distributions, which results in an invariance property satisfied by a large class of claim amount models. In particular, when claims are exponenti...

.................................................................................................................................... ii Table of contents ...................................................................................................................... iv List of tables .............................................................................................................

Motivated by the debate about the economic consequences of mandatory adoption of International Financial Reporting Standards (IFRS), this study investigates the effect of hedge accounting under IFRS on corporate risk management. Using a sample of large UK non-financial firms from 2003 to 2008, we show that the implementation of the new standards reduces the level of asymmetric information faced...