Have you been paying attention to shares of Eagle Materials (EXP) ? Shares have been on the move with the stock up 6.4% over the past month. The stock hit a new 52-week high of $216.99 in the previous session. Eagle Materials has gained 6.4% since the start of the year compared to the 48.7% move for the Zacks Construction sector and the 46.9% return for the Zacks Building Products - Concrete and Aggregates industry.What's Driving the Outperformance?The stock has a great record of positive earnings surprises ...