Do Institutional Investors Destabilize Stock Prices? Emerging Market’s Evidence Against a Popular Belief
نویسنده
چکیده
In this paper, we provide additional empirical evidence on the impact of institutional investors on stock return dynamics. The Polish pension system reform in 1999 and the associated increase in institutional ownership due to the investment activities of pension funds are exploited as an unique institutional characteristic. Performing a variant of the event study methodology in an asymmetric GARCH framework we find robust empirical evidence that the increase of institutional ownership have changed the autocorrelation and volatility structure of aggregate stock returns. However, the findings do not support the hypothesis that institutional investors have destabilized stock prices. The results are interpretable in favour of a stabilizing effect on index stock returns induced by institutional investors. JEL Classification: G14, G23
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