In this paper we tackle the problem of the presence of negative average rate of returns in the computation of the performance of ethical mutual funds. The presence of these negative values raises problems both in the computation of the classical performance indicators and in DEA modeling. In...

The paper is an updated first performance evaluation study of the Polish pension funds operating from 1999. The unconditional performance evaluation models are used. It is shown that pension fund managers did produce additional value due to active management. Therefore, unsatisfactory overall...