Plus: Boeing shares climb 2.6% after announcing it will acquire Spirit AeroSystems. Chewy shares decline after investor \u201cRoaring Kitty\u201d disclosed a 6.6% stake in the company. J.R. Whalen reports.\n\n\n\nSign up for the WSJ's free What's News newsletter.\xa0\n\nLearn more about your ad choices. Visit megaphone.fm/adchoices