The basic goal of the article is to analyse the impact of credit ratings changes on the rates of return of banks' shares taking into account the level of economy development and the political divisions. There are put the following hypothesis: The banks' share prices react stronger on the credit...

In this paper, we develop an equilibrium asset pricing model for the market excess return, variance and the third cumulant by using a jump-diffusion process with stochastic variance and jump intensity in Cox, Ingersoll and Ross' (1985) production economy. Empirical evidence with S&P 500 index...