The introduction of a private pension funds in conjunction with the public social security system is the essence of pension system reform that was implemented in Lithuania. The performance of private funds is mainly presented by fund's net asset value and few classical risk estimates. Such evaluation shows the management company's ability to profitably invest funds, but does not give the evidential riskreturn evaluation. This paper refers to the overall statistical analysis of 26 private

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... funds over a certain time period. The objective of the research is to determine the risk-return profile of pension funds and to answer the question whether the categories specified based on investment strategy in equities reflect fund's empirical behaviour. Research methodology includes the statistical analysis, risk measuring, performance ratio estimation, and K-means clustering. The conclusions obtained by the research allow determining whether the distinct pension funds have beaten a low risk reference and are adequately assigned to a certain risk category. JEL CLASSIFICATIONS c38; G11; G23; j32 ARTICLE HISTORY