Have you been paying attention to shares of Acuity Brands (AYI) ? Shares have been on the move with the stock up 14.9% over the past month. The stock hit a new 52-week high of $312.2 in the previous session. Acuity Brands has gained 48.7% since the start of the year compared to the 15.5% move for the Zacks Construction sector and the 45.2% return for the Zacks Building Products - Lighting industry.What's Driving the Outperformance?The stock has an impressive record of positive earnings surprises, as it hasn ...