Have you been paying attention to shares of Arch Capital Group (ACGL) ? Shares have been on the move with the stock up 10.9% over the past month. The stock hit a new 52-week high of $114.69 in the previous session. Arch Capital Group has gained 53.4% since the start of the year compared to the 16.6% move for the Zacks Finance sector and the 27.8% return for the Zacks Insurance - Property and Casualty industry.What's Driving the Outperformance?The stock has a great record of positive earnings surprises, as i ...