Performance measures how an investment or portfolio has performed over a certain period of time. In the case of investment funds this is usually the change of the net asset value (NAV) expressed as a percentage. The calculation method of Österreichische Kontrollbank AG (OeKB) is the method commonly used in Austria. Accordingly, performance is the change in the fund’s unit price over a certain period of time. The calculation is based on the “calculated value” of a fund, as provided by the investment company, with distributions being considered. Taxes and costs that are not included in the calculated value are not taken into account.