Have you been paying attention to shares of Iamgold (IAG) ? Shares have been on the move with the stock up 14.6% over the past month. The stock hit a new 52-week high of $4.78 in the previous session. Iamgold has gained 86.6% since the start of the year compared to the -7.1% move for the Zacks Basic Materials sector and the 23.3% 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 consen ...