Can mutual fund managers predict security prices to beat the market?The case of Greece during the debt crisis

Abstract

The purpose of this paper is to examine the performance of Greek equity mutual funds, elaborating on stock selection in parallel with market timing measures, in comparison with the performance of ETFs and index funds for the period 01/24/2008-05/12/2017, and the short-term performance persistence of actively managed funds for the period 05/12/2015-05/12/2017. Using all domestic equity mutual funds at our disposal and daily data, the authors apply multi-factor models to estimate risk-adjusted returns and to evaluate the selectivity and market timing ability of fund managers. In order to investigate short-term performance persistence, the coexistence of stock selection and market timing strategy is allowed and a battery of parametric and nonparametric tests is implemented. Results show that actively managed mutual funds underperformed the market index, as well as passively managed ETFs and index funds, primarily due to the managers’ inability to time the market. Furthermore, a winner-picking strategy to outperform a-buy-the-market-and hold policy is questioned.