Showing 51 - 60 of 1,669
Implied volatility is one of the key issues in modern quantitative finance, since plain vanilla option prices contain vital information for pricing and hedging of exotic and illiquid options. European plain vanilla options are nowadays widely traded, which results in a great amount of...
Persistent link: https://www.econbiz.de/10005862106
State price densities (SPD) are an important element in applied quantitativefinance. In a Black-Scholes model they are lognormal distributions with constant volatility parameter. In practice volatility changes and the distribution deviates from log-normality. We estimate SPDs using EUREX option...
Persistent link: https://www.econbiz.de/10005862107
Most dimension reduction methods based on nonparametric smoothing are highlysensitive to outliers and to data coming from heavy-tailed distributions. We showthat the recently proposed methods by Xia et al. (2002) can be made robust insuch a way that preserves all advantages of the original...
Persistent link: https://www.econbiz.de/10005862113
Trading, hedging and risk analysis of complex option portfolios depend on accurate pricing models. The modelling of implied volatilities (IV) plays an important role, since volatility is the crucial parameter in the Black-Scholes (BS) pricing formula. It is well known from empirical studies that...
Persistent link: https://www.econbiz.de/10005862325
The Black-Scholes formula, one of the major breakthroughs of modern finance,allows for an easy and fast computation of option prices. But some of its assumptions, like constant volatility or log-normal distribution of asset prices,do not find justification in the markets. More complex models,...
Persistent link: https://www.econbiz.de/10005862326
An enormous number of statistical methods have been developed in quantitivefinance during the last decades. Nonparametric methods, bootstrapping timeseries, wavelets, estimation of diffusion coefficients are now almost standard instatistical applications. To implement these new methods the...
Persistent link: https://www.econbiz.de/10005862327
The purpose of this work is to introduce one of the most promising among recentlydeveloped statistical techniques – the support vector machine (SVM) –to corporate bankruptcy analysis. An SVM is implemented for analysing suchpredictors as financial ratios. A method of adapting it to default...
Persistent link: https://www.econbiz.de/10005862328
Many of the concepts in theoretical and empirical finance developed over thepast decades - including the classical portfolio theory, the Black-Scholes-Mertonoption pricing model and the RiskMetrics variance-covariance approach toValue at Risk (VaR) - rest upon the assumption that asset returns...
Persistent link: https://www.econbiz.de/10005862329
Value-at-Risk (VaR) of a portfolio is determined by the multivariate distribution of the risk factors increments. This distribution can be modelled through copulae, where the copulae parameters are not necessarily constant over time. For an exchange rate portfolio, copulae with time varying...
Persistent link: https://www.econbiz.de/10005862333
With the increase of e-learning by universities and educational institutes in the worldthrough more electronic platforms, come the questions to researchers, educators anddesigners of electronic platforms about feasibility and using this method of learning.Are we achieving the desired goals and...
Persistent link: https://www.econbiz.de/10005862546