Not unusual for highly hyped IPOs to &quot;pop&quot;. Underwriters and the first tier of investors like to structure IPO pricing this way so they get a guaranteed exit on the initial craze to buy and beat out subsequent buyers.<p>Facebook IPO&#x27;d at $38, popped up to $45, closed at $38 on the first day, then plummeted down to $27 a week after the IPO. Now its at $107. Anything can happen.