Traditional equity indices bundle companies based on their country of domicile and primary listing, regardless of where the selected companies generate their revenues. In the absence of such consideration, the outcome is overlaps in regional revenue exposure among indices. Viewed in a portfolio context, revenue overlaps among portfolio constituents increase correlations between indices. STOXX TRU Indices take into account each company's revenue exposure to single countries in the selection process and focus on companies that generate all or a significant portion of their revenues in targeted countries or regions.
This enables STOXX TRU Indices to offer similar levels of volatility but significantly lower correlations. Viewed in a portfolio context, a combination of STOXX TRU indices is therefore found to increase portfolio efficiency, i.e. to offer more return per unit of risk taken compared to the use of traditional equity indices.

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