This article deals with the problem of the necessity of using individual econometric models to describe the relationship between the rates of returns of stocks and sport results and expectations of bookmakers’ market - which means factors reflecting some emotional biases. The specificity of these factors makes it necessary to use individual approach to each case. The main goal of this research is to verify the hypothesis - the rates of returns should be modeled by econometric models of the ARCH(q) type using factors closely tied with a sport activity but different for every club (stock). The shares quotations of three Italian clubs listed on the Milan Stock Exchange were used in the research. They were AS Rome, Juventus Turin and Lazio Rome. The bookmakers’ odds of the analyzed clubs’ matches in the Italian Serie A were also used in this article. The analysis covered the period of time from 2001 to 2014. The chosen clubs are the components of Dow Jones Europe Football Index. Football market in Italy in comparison with the European market