Domino's Pizza rises after Q2 same-store sales beat

** Shares of Dominos' Pizza DPZ.O rise 5% to $490 in premarket trading

** Pizza chain operator beats analysts' estimate for Q2 U.S. same-store sales, helped by new items on the menu and promotions

** DPZ posts a 3.4% rise in same-store sales in U.S. compared with the estimate of a 2.21% rise - data compiled by LSEG

** Reports 2.4% rise in international same-store sales, while analysts estimated a 1.71% increase

** DPZ also posts EPS of $3.81 compared with the estimate of $3.95

** As of last close, shares up 11% YTD