Have you been paying attention to shares of Enviri (NVRI) ? Shares have been on the move with the stock up 20.3% over the past month. The stock hit a new 52-week high of $10.62 in the previous session. Enviri has gained 12% since the start of the year compared to the 5.7% move for the Zacks Business Services sector and the 22.2% return for the Zacks Waste Removal Services industry.What's Driving the Outperformance?The stock has an impressive record of positive earnings surprises, as it hasn't missed our ear ...