Adjasi, C.K.D.Osei, K.A.Fiawoyife, E.U.2019-05-082019-05-082011-09https://doi.org/10.1016/j.ribaf.2011.01.005Volume 25, Issue 3,Pages 255-265http://ugspace.ug.edu.gh/handle/123456789/29882The paper provides empirical analyses of IPO underpricing on the Nigerian Stock Exchange, from the period 1990 to 2006. The results indicate an average abnormal initial day returns of 43.1%. There is evidence of long-run underperformance of 0.6%. Results from our regression model explaining initial abnormal returns for the IPOs of Nigeria show that size of firm and audit quality are important variables affecting underpricing. The results also show the presence of a non-linear relationship between the offer price and underpricing. © 2011 Elsevier B.V.enAbnormal returnsAfricaIPOStock marketUncertaintyUnderpricingArticle