Shares of Orion Marine Group (ORN) have been strong performers lately, with the stock up 4.7% over the past month. The stock hit a new 52-week high of $9.94 in the previous session. Orion Marine has gained 28.2% since the start of the year compared to the 5.9% gain for the Zacks Construction sector and the 29.4% return for the Zacks Building Products - Heavy Construction industry.What's Driving the Outperformance?The stock has a great record of positive earnings surprises, having beaten the Zacks Consensus ...