Domino’s Pizza Inc.’s U.S. system’s comparable-store sales growth of 3% in the second quarter not only lagged the same 2018 quarter’s 6.9% improvement, but was the lowest second-quarter gain since 2012’s 1.7% rise. From 2013 through 2018 Domino’s U.S. system reported average second-quarter comps growth of 8.5%, but has experienced a steady deceleration since 2015’s 12.8% increase. Jeffrey Lawrence, Domino’s chief financial officer, noted during a recent call with analysts, “We continue to experience pressure on the U.S. comp from our successful fortressing strategy, as well as from aggressive marketing of third-party [delivery] aggregators.”