Purpose - This paper seeks to test the hypothesis that stock returns in the Athens Stock Exchange (ASE) adjust asymmetrically to past information due to differential adjustment costs. Design/methodology/approach -The methodological approach is based on the asymmetric price adjustment model...

Purpose – This paper seeks to test the hypothesis that stock returns in the Athens Stock Exchange (ASE) adjust asymmetrically to past information due to differential adjustment costs. Design/methodology/approach – The methodological approach is based on the asymmetric price adjustment model...

Purpose – This paper aims to propose a general, yet simple model to estimate interest rate volatility. Design/methodology/approach – The methodology is based on an extended Exponential Generalized ARCH (EGARCH) model that incorporates both interest rate levels as well as past information...

Compares stock market returns behaviour for six stock markets in order to find out whether nonlinearities are a result of conditional heteroscedasticity or of previous performance. Uses LeBaron’s exponential generalized autoregressive conditional heteroscedasticity model to link conditional...

Several authors have raised the issue of non‐stationarity of security returns in empirical tests of the Arbitrage Pricing Theory (APT). This paper tests for one form of non‐stationarity, namely, conditional heteroskedasticity, in the empirical APT with observed factors. Using monthly stock...

This paper investigates the behavior of exchange rate volatility during appreciations and depreciations. Six US dollar exchange rates are investigated. In all instances the response of volatility to exchange rate changes is asymmetric. For dollar exchange rates with respect to EMS currencies,...

Purpose – This paper aims to propose a general, yet simple model to estimate interest rate volatility. Design/methodology/approach – The methodology is based on an extended Exponential Generalized ARCH (EGARCH) model that incorporates both interest rate levels as well as past information...