shares for great lakes dredge  dock corporation fell more than 13 to 584 in wednesday morning trading after the company reported a loss of 312 million for the fourth quarter company shares hit 521 on wednesday the lowest intraday price since aug 15 2018 in the wake of the loss the largest provider of dredging services is working to cut costs by adjusting cost structures according to market trends retiring a 42yearold hopper dredge and cold stacking two major dredges the company said