Enviri (NVRI) shares rallied 6.1% in the last trading session to close at $8.87. This move can be attributable to notable volume with a higher number of shares being traded than in a typical session. This compares to the stock's 1.5% loss over the past four weeks. The stock is benefitting from the improved performances of Harsco Environmental and Clean Earth, driven by growth in services and eco-product volumes, coupled with increased pricing, and higher volumes and lower costs across the hazardous waste bu ...