Leia o texto abaixo para responder à questão.From the IPO to the First Trade: Is Underpricing Related to the Trading Mechanism?Sonia Falconieri, Albert Murphy and Daniel Weaver As documented by a vast empirical literature, IPOs are characterized by underpricing. Most of the theoretical literature has linked the size of underpricing to the IPO procedure used on the primary market. In this paper, by using a matched sample of NYSE and Nasdaq IPOs, we show that the size of underpricing also depends on the trading method used in the IPO aftermarket. There are two major methods of opening trading of initial public offerings (IPOs) in the U.S. The NYSE is an order-driven market ...56 a call auction allows supply and demand to be aggregated (at one location) prior to the start of trading. ...57 , Nasdaq is a quote-driven market. Dealers can only specify their best quotes, and participants have ...58 idea of supply and demand away from the inside quotes. We propose a new proxy for ex ante uncertainty of firm value and test it. Our results show that there is a larger level of uncertainty at the beginning of trading on Nasdaq than on the NYSE. This in turn is associated with larger levels of underpricing for Nasdaq IPOs. We suggest that this may be due to the different informational efficiency of the two trading systems.(http://www.nyse.com/marketinfo/p1020656068262.html?displayPage=% 2Fmarketinfo%2Fmarketinfo.html)Para responder à questão de número 56, assinale, a letra correspondente à alternativa que preenche corretamente a lacuna do texto apresentado.