Shares of Allstate (ALL) have been strong performers lately, with the stock up 6% over the past month. The stock hit a new 52-week high of $203.54 in the previous session. Allstate has gained 45.4% since the start of the year compared to the 24.5% move for the Zacks Finance sector and the 31.8% return for the Zacks Insurance - Property and Casualty industry.What's Driving the Outperformance?The stock has an impressive record of positive earnings surprises, as it hasn't missed our earnings consensus estimat ...