CHAT is trading 1.5% down as the 10-year Treasury yield approached 5.14%, its highest since 2007, making long-duration growth and AI stocks less attractive. - Strong September business-activity data, including a composite PMI reading of 58.4, revived expectations for tighter Federal Reserve policy. - The Nasdaq is also underperforming broader indexes, confirming a rate-sensitive, technology-led selloff rather than an isolated ETF move.