This study examines the effect of merger momentum on acquirer's returns both in the short and long-run. The focus is on high valuation markets and the source of momentum is investigated employing three different hypotheses: the neoclassical hypothesis, the hubris hypothesis and the investor...

On face value studies documenting contrarian profits challenge the efficient markets paradigm. However most of them assume that systematic risk is constant when in reality it varies (Ross, 1989) especially in emerging markets (Aggarwal et al., 1999). The study in the first instance investigates...