Have you been paying attention to shares of Iamgold (IAG) ? Shares have been on the move with the stock up 22.4% over the past month. The stock hit a new 52-week high of $4.55 in the previous session. Iamgold has gained 77.1% since the start of the year compared to the 0.8% move for the Zacks Basic Materials sector and the 15.9% return for the Zacks Mining - Gold industry. What's Driving the Outperformance? The stock has a great record of positive earnings surprises, as it hasn't missed our earnings consens ...