EN
The article presents a study of major IT corporations whose management authorities are based in EU member states. Its objective is to identify changes in the economic potential of the corporations in years 2004–2008 as well as factors which determine geographical distribution of IT corporations within the European Union. In order to prove the thesis and the objective, the following determining features have been used: changes in the potential of IT companies (number of companies, as well as the value of assets and market value), scope of company business operations (sales value), effectiveness of their operations (financial profit/loss figure) as well as correspondence between the type of operations and the performance of relevant corporations.