Have you been paying attention to shares of Sterling Infrastructure (STRL) ? Shares have been on the move with the stock up 23.2% over the past month. The stock hit a new 52-week high of $194.07 in the previous session. Sterling Infrastructure has gained 120.2% since the start of the year compared to the 28.2% move for the Zacks Construction sector and the 23.1% return for the Zacks Engineering - R and D Services industry.What's Driving the Outperformance?The stock has an impressive record of positive earni ...