Fast-casual sandwich shop operator Potbelly Corporation (NASDAQ:PBPB) held its IPO last October and, on hopes that the fast-casual chain might be the "next Chipotle Mexican Grill," shares more than doubled to a 52-week high of $33.90 from an initial IPO price of $14. Since then the shares have come back down to earth, falling by over 50%. Such a fall naturally leads investors to wonder if Wall Street perhaps went too far in selling off the still-fast-growing restaurant operator. Motley Fool Consumer Goods Analyst Sean O'Reilly explains why the sell-off was more than warranted and why after such a huge drop the shares likely reflect a more reasonable valuation. 

Will this stock be your next multibagger?
Give me five minutes and I'll show how you could own the best stock for 2014. Every year, The Motley Fool's chief investment officer hand-picks one stock with outstanding potential. But it's not just any run-of-the-mill company. It's a stock perfectly positioned to cash in on one of the upcoming year's most lucrative trends. Last year his pick skyrocketed 134%. And previous top picks have gained upwards of 908%, 1,252% and 1,303% over the subsequent years! Believe me, you don't want to miss what could be his biggest winner yet! Just click here to download your free copy of "The Motley Fool's Top Stock for 2014" today.

Sean O'Reilly has no position in any stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.