US Ecology (ECOL) Shares Cross Below 200 DMA By: Market News Video August 10, 2017 at 16:44 PM EDT In trading on Thursday, shares of US Ecology, Inc. (ECOL) crossed below their 200 day moving average of $49.14, changing hands as low as $48.55 per share.. Read More >> Related Stocks: US Ecology Inc Vaneck Environmental Services ETF