Plus: Humana shares fall after the company warned about a steep drop in the federal government\u2019s quality ratings of its medicare plans. Conagra shares decline after the foodmaker reported lower quarterly sales. J.R. Whalen reports.\xa0\n\n\n\nCorrection: Humana shares fell 12% on Wednesday. An earlier version of this podcast incorrectly said they rose 12%. (Corrected on October 2)\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