Events that take place within stock markets play a serious role in determining Economic Growth.Initial Public Offer Underpricing has been of interest to financial experts, Companies going public and interested in raising finance from stock markets. The book studies Initial Public Offers price variation within the offer period, and in the short-run, by applying empirical finance methodology to Nigerian IPOs, and a thorough literature review of Initial Public Offers. Here we discuss the relevance of asymmetric information, signalling hypothesis,Capital Asset Pricing Model(CAPM), and Fama-French models to Initial Public Offer evaluation in Nigeria. The results of the study are compared for consistency with the behaviorist and asymmetric information models.