Domino's Pizza sinks after same-store sales miss (DPZ)

Domino's Pizza posted same-store sales that fell short of expectations.
The pizza chain also missed on both the top and bottom lines. 
Shares fell 7.3% early Thursday.
Watch Domino's Pizza trade live.
Domino's Pizza sank more than 7% Thursday morning after delivering disappointing same-store sales for the fourth quarter. 
The pizza chain said domestic same-store sales jumped 5.6% versus a year ago, falling short of the 7.2% gain that analysts surveyed by Bloomberg were expecting.