Sterling Infrastructure, Inc. (STRL) stock is trading at a premium compared with the Zacks Engineering - R and D Services industry. With a forward 12-month Price/Earnings (P/E) ratio of 25.76X, it is above the industry's average of 23.81X and a five-year median of 10.65X. In comparison, its peers, Primoris Services Corporation (PRIM) , Granite Construction Incorporated (GVA) and Dycom Industries, Inc. (DY) , are trading cheaper at 15.89X, 14.82X and 21.91X, respectively. While some investors may view this a ...