Big Data Analytics Specialist Tableau Software Raises $254M In IPO, Shares Close 64% Up; Marketo's First Day Up 78% To $23.10

One year to the day of the troubled Facebook IPO, the climate for tech IPOs in the public markets is significantly less stormy, especially for companies in the enterprise space. Today, not one but two, Tableau Software and Marketo, are debuting on New York stock exchanges. Business intelligence provider Tableau Software, trading as "DATA", is one of the more highly anticipated tech IPOs of the year, and so far it has not disappointed.