Shares of Domino’s Pizza (DPZ) are down 12% after the restaurant chain reported second-quarter sales that missed Wall Street targets. For the quarter ended June 30, Domino’s posted earnings per share (EPS) of $4.03 U.S., which was ahead of the $3.68 U.S. forecast among analysts. The company’s profit rose 30% from a year earlier. However, revenue of $1.1 billion U.S. was slightly below Wall Street’s expectations, sending Domino’s stock sharply lower. Also, the 30% earnings growth was due to a change in pretax unrealized gains and losses associated with the company’s investment in DPC…