Foucault, Thierry; Sraer, David; Thesmar, David - C.E.P.R. Discussion Papers - 2008
they act as noise traders. To this end, we consider a reform that makes short selling or buying on margin more expensive … for retail investors relative to institutions, for a subset of French stocks. If retail investors are noise traders … are also consistent with models in which individual investors, acting as noise traders, are a source of volatility. …