AMC Entertainment shares tumble as CEO holds out for 'Avengers' rescue

Shares of AMC Entertainment tumbled as much as 10 percent Thursday -- even as the theater chain's CEO predicted "Avengers: Endgame" would come to the rescue. Investors sent AMC's stock down double digits in midday trading -- and down 7 percent at the close -- after the world's largest movie exhibitor posted a first-quarter loss...