We first document that each trading day the U.S. Treasury notes have a large proportion of zero returns. This is because almost all trades are executed at the best ask or bid quote and quoted spreads are mostly set close to the minimum tick. The proportion of zero returns is negatively...

This paper analyzes the Amihud (2002) measure of illiquidity and its role in asset pricing. It is shown first that the effect of illiquidity on asset pricing is clarified by using the turnover version of the Amihud measure and including firm size as a separate variable. When we decompose the...