Twin River Worldwide Holdings is shrugging off a sharp drop in its stock price after the casino company revealed its table games have been hit hard by the opening of the new Encore casino in Boston.

Twin River, which went public earlier this year after a merger with Delaware-based Dover Downs, saw its shares drop in New York Stock Exchange trading from $23.40 on Friday to $20.65 at Monday’s market close, a decline of over 11%. The stock made up some ground Tuesday amid a broader market rally, but had only recovered to $21.12 as of 12:15 p.m.