In his seminal paper, Brooks argues that the relation between return volatility and trading volume can be both linear and nonlinear. Adopting both linear and nonlinear Granger causality tests, he shows that there exists both linear and nonlinear bi-directional causality between trading volumes...

We propose a multidimensional liquidity measure constructed from 6 out of 17 individual low-frequency liquidity proxies. The multidimensional liquidity factor yields significant positive premiums and offers distinguished explanatory power on the cross-sectional return variations in China’s...