Have you been paying attention to shares of BJ's Wholesale Club (BJ) ? Shares have been on the move with the stock up 9% over the past month. The stock hit a new 52-week high of $80.78 in the previous session. BJ's Wholesale Club has gained 21.1% since the start of the year compared to the -1.2% move for the Zacks Consumer Discretionary sector and the 8.6% return for the Zacks Consumer Services - Miscellaneous industry.What's Driving the Outperformance?The stock has a great record of positive earnings surpr ...