CHAT is trading at $77.90, up +3.51% versus the regular-session close, with no clear catalyst identified for its after-hours rebound. - The gain runs counter to Friday’s sharp tech selloff. - Available reporting cited AI-spending worries and disappointing Amazon and Intel results as the day’s main sector pressures. - The session’s weakness also followed Alphabet’s earnings-driven plunge and renewed investor scrutiny of AI investment returns.