We show that an increase in a stock's breadth of institutional ownership or turnover is followed by a significant but temporary increase in its CAPM beta estimate and a decrease in its CAPM alpha. The increasing effect of breadth of ownership on beta estimates strengthens if we classify...

This thesis contains three papers. Each paper addresses a distinct research question and is implemented on a separate dataset. The first paper concludes that daytime auctions, together with market opening and closing intervals, contribute to the periodicity of the cross-section of stock returns....