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Modelling portfolio credit risk is one of the crucial challenges faced by financial services industry in the last few years. We propose the valuation model of collateralized debt obligations (CDO) based on copula functions with up to three parameters, with default intensities estimated from...
Persistent link: https://www.econbiz.de/10010274189
, especially on the BS implied volatility. Implied binomial trees (IBT) models capture the variations of the implied volatility … known as volatility smile. They provide a discrete approximation to the continuous risk neutral process for the underlying … Barle and Cakici (BC). After the formation of IBT we can estimate the implied local volatility and the state price density …
Persistent link: https://www.econbiz.de/10010275907
Suppose a fund manager uses predictors in changing port-folio allocations over time. How does predictability translate into portfolio decisions? To answer this question we derive a new model within the Bayesian framework, where managers are assumed to modulate the systematic risk in part by...
Persistent link: https://www.econbiz.de/10011604927
Tests for the existence and the sign of the volatility risk premium are often based on expected option hedging errors … the premium is the same as the sign of the mean hedging error for a large class of stochastic volatility option pricing …
Persistent link: https://www.econbiz.de/10010263305
to model a credit quality process as an Itô integral with respect to a Brownian motion with a stochastic volatility … conditional default probabilities and credit spreads. An example for a volatility process is the square root of a Lévy …
Persistent link: https://www.econbiz.de/10010301707
, a credit quality process is driven by an Itô integral with respect to a Brownian motion with stochastic volatility … default probabilities and credit spreads. An example for a volatility process is the square root of a Lévy-driven Ornstein …-Uhlenbeck process. We show that jumps in the volatility translate into jumps in credit spreads. We examine the dynamics of the OS …
Persistent link: https://www.econbiz.de/10010301718
conditioning on skewness increases the predictive power of the volatility spread and that coefficient estimates accord with theory … of the volatility spread to skewness. We measure skewness from option prices and test these predictions. We find that … the term structure of option-implied volatility, skewness and kurtosis and find that time-dependence in returns has a …
Persistent link: https://www.econbiz.de/10010279907
A discrete time model of financial markets is considered. It is assumed that the relative jumps of the risky security price are independent non-identically distributed random variables. In the focus of attention is the expected non-risky profit of the investor that arises when the jumps of the...
Persistent link: https://www.econbiz.de/10010293743
volatility risk, for dollar, euro and pound rates at a daily frequency, between October 1998 and August 2006. The measurement of … the volatility risk premium rests on a simple model according to which variance forecasts are generated under the … large - negative - compensation for volatility risk, a component which was smaller in absolute terms - but not relative to …
Persistent link: https://www.econbiz.de/10011604905
This paper constitutes a first analysis on stock returns and stock return volatility of energy corporations from the … European utilities, they lead to an appreciation of oil and gas stocks. Most importantly, we show that oil market volatility … negatively affects European oil and gas stocks. In contrast, energy stock volatility is not driven by volatility of the resource …
Persistent link: https://www.econbiz.de/10010298026