bymuratdeniz/E+ via Getty Images Restaurant Stock Hammered in Q3 I gave Dutch Bro's (NYSE:BROS) stock a buy rating when I wrote about it in June. Following its Q2 earnings, the stock was down more than 25% at the opening, but the loss gradually decreased to about 20% at the close. Unfortunately, restaurant stocks have suffered greatly this quarter as a result of the 350 basis point decrease in restaurant-level margin reported by Kura Sushi (NYSE:KRUS) due to an increase in labor costs in California. The mar ...