The Pros And Cons Of IPO Underpricing

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Going public marks an important watershed in the life of a young company. When a company goes public it provides access to public equity capital, so as to lower the company’s cost of funding in operations and investments. The abnormal return between the offer price and the first day trading closing price of the IPO is called underpricing or initial return. Most companies go public via an initial public offering of shares to investors. Early writers, notably Logue (1973) and Ibbotson (1975), documented that when companies go public, the shares they sell tend to be underpriced, in that way the share price jumps substantially on the first day of trading. Clearly, underpricing is costly to a firm’s owners, as shares sold for personal account are
Thus, more investors will become informed the greater the valuation uncertainty. This rises the required underpricing, since an increase in the number of informed investors aggravates the winner’s curse problem. This hypothesis has received overwhelming empirical support, though it is worth noting that all other asymmetric-information models of IPO underpricing reviewed later in this chapter also predict a positive relation between initial returns and ex ante uncertainty. Thus, most empirical studies of IPO underpricing face the challenge of controlling for ex ante uncertainty, whatever theory they are trying to test. The various proxies that have been used in the literature loosely fall into four groups: company characteristics, offering characteristics, prospectus disclosure, and aftermarket variables. A. Why go public? The main reason why firms go public is to gain access to additional capital. Being listed on a stock exchange allows for many more investors, both in the country of the listing and abroad, who can supply the company with funding. As explained by Rajan (2012), capital can also be acquired more easily from banks if the company is

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