Foucault, Thierry; Sraer, David; Thesmar, David - C.E.P.R. Discussion Papers - 2008
We test the hypothesis that individual investors contribute to the idiosyncratic volatility of stock returns because …, theory implies that the volatility of stocks affected by the reform should decrease relative to other stocks. This prediction … are also consistent with models in which individual investors, acting as noise traders, are a source of volatility. …