A rational approach to investing is manifested through the realization of a higher yield for a given level of risk, and … the realization of a given yield by accepting lower risk levels. Through the investment process, the question that is … case, the European capital market is presented as an optimal risk portfolio created from ten selected EU equity indices of …

For proper valuation of risk to which the portfolio of financial assets is exposed, it is necessary to forecast the … are heteroskedastic, i.e. their volatility is not constant in time For that reason the appropriate mathematical models …