Overbuilding and soft sales are creating a cycle of bad stock performances by locally-based restaurant companies. As of Oct. 31, eight of nine North Texas-based dining businesses have logged stock decreases of 14 percent or more since the beginning of the year. See the slideshow below to see how the stocks of all of North Texas' restaurant companies have fared so far this year. The exception to the region's bad restaurant stock performance was Wingstop Inc.