There are no reference values to compare the balance of channels across the three ownership categories. To evaluate media concentration additional indices are to be combined, such as the Herfindahl-Hirschman Index (HHI) which is calculated based on the market share of the BMOs. Ownership policies should avoid undue concentration of media in a few individuals or families. The evaluation of such policies is feasible with disaggregated data at the owners’ level, in combination with the channel audience and market share.