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The conditions of the pension funds (OFE) functioning were essentially changed in the years 2011–2014. The aim of the paper is to find out if these modifications influence the efficiency of the pension funds and to compare the performance of these funds to stable growth open investment funds (FIO). The analysis is provided for selected funds in the years 2009–2015. We conclude that in the examined period, OFE performed better than FIO, and the modifications of the rules for the pension funds caused the increase of risk and decrease of investment efficiency of these funds’ portfolios.

Performance of Pension Funds and Stable Growth Open Investment Funds During the Changes in the Polish Retirement System