Dynamic mean–variance problem with frictions

Finance and Stochastics - We study a dynamic mean–variance portfolio selection problem with return predictability and trading frictions from price impact. Applying mean-field type control...     

Do investors affect financial analysts’ behavior? Evidence from short sellers

We examine how short sellers affect financial analysts’ forecast behavior using a natural experiment that relaxes short-sale constraints. We find that increased ease of short selling improves analyst earnings forecast quality by reducing forecast bias and increasing forecast accuracy. The improvements can be explained by both the disciplining pressure from short sellers and increased price efficiency from incorporating information in a timely manner. Although it is well documented that financial analysts can affect investors, our paper provides novel evidence on how sophisticated investors, short sellers, can affect analysts.