This paper explains and extends my 2002 paper. It presents a return factor of illiquid-minus-liquid stocks, called IML, which provides a time series of the illiquidity premium. The risk-adjusted predicted return on IML is lower in the period that follows my 2002 paper but it is still...

"We study the exposure of the U.S. corporate bond returns to liquidity shocks of stocks and treasury bonds over the period 1973 to 2007. A decline in liquidity of stocks or Treasury bonds produces conflicting effects: Prices of investment-grade bonds rise while prices of speculative grade bonds...