Recently, I've been looking through IPO filings for fun and noticed that it appears that some companies are filing an IPO before they have even transacted any business. For example Pulte Acquisition Corp (http://www.nasdaq.com/markets/ipos/company/pulte-acquisition-corp-979789-79840?tab=financials), and MessageBGone Inc. (http://www.nasdaq.com/markets/ipos/company/messagebgone-inc-979595-79821) don't have actual products but are still filing?It was my understanding that normally a company will at least reach a certain valuation so they can, at a very minimum, sustain the fees associated with being listed.