[Cue voiceover] “In a world … where one company … has one I.P.O. … can one stock survive?” Actually, today’s dip in Plano-based Cinemark’s stock price from yesterday’s I.P.O. isn’t so dramatic–only 6 percent, as of now. (The company raised $532 million yesterday.) But still, it looks more dramatic than the Fantastic Four sequel. How can a movie ruin Silver Surfer?