OpenTable IPO sets off feeding frenzy

It looks like today's initial public offering by OpenTable (OPEN) was overbooked.

Ravenous investor demand pushed the stock's IPO price to $20, well above the company's expected range of $16 to $18, which it had already boosted earlier this week in response to the buzz building around the deal. By mid-afternoon it had climbed another 46 percent, to $29.60.