We study the theoretical and empirical properties of a simple measure of market illiquidity, namely the realized Amihud, which is defined as the ratio between the realized volatility and trading volume and which refines the popular price impact measure proposed by Amihud (2002). In our model,...

This paper presents the first comprehensive examination of liquidity in the global foreign exchange (FX) swap market. Our analysis employs effective measures that assess both the tightness and depth of the global market. We identify three main findings: First, FX swap liquidity is fragmented...