Plus: Novo Nordisk’s stock slumps after its said semaglutide didn’t slow Alzheimer’s disease in two late-stage clinical trials. And former Fox News host Tucker Carlson has launched a precious-metals company. Alex Ossola hosts. Sign up for WSJ’s free What’s News newsletter. An artificial-intelligence tool assisted in the making of this episode by creating summaries that were based on Wall Street Journal reporting and reviewed and adapted by an editor.