Have you been paying attention to shares of Zumiez (ZUMZ) ? Shares have been on the move with the stock up 8.5% over the past month. The stock hit a new 52-week high of $31.37 in the previous session. Zumiez has gained 31.2% since the start of the year compared to the 11.2% move for the Zacks Retail-Wholesale sector and the 4.9% return for the Zacks Retail - Apparel and Shoes industry.What's Driving the Outperformance?The stock has a great record of positive earnings surprises, as it hasn't missed our earni ...