Welcome back to Market on Close. I'm Marley Caiten here in Chicago alongside Sam Bodis at the New York Stock Exchange. We'll close out our show with our final thoughts like we usually do.Today's session, AI was a big theme. Apple changing out its head of AI, Sam Alman, reportedly sounding an alarm for Code Red. Mestro releasing some new models.Let's break down some of those stories. at Apple. The current head of AI is retiring and being replaced by an AI veteran with a history at both Microsoft and Google w ...