The relationship between stock return and trading volume in Malaysian ACE market has been analysed in this study. There are two objectives of conducting the analysis; (1) to investigate the relationship between stock return and trading volume in Malaysian ACE market, and; (2) to conclude whether the relationship of trading volume and stock return on Malaysian ACE market is consistent with the weak-form of the efficient market hypothesis (EMH). The empirical result proves a significant positive contemporaneous relationship between stock return and trading volume. Thus, the first objective is satisfied. Second objective is proven that Malaysian ACE market is contradicted with the weak-form of e-EMH.