Baiya International is trading at $2.30, up 12.15% in after-hours, with no confirmed September 29 company announcement explaining the jump. - The September 29 regular-session close was $2.05, after a 0.99% gain that day. - An earnings calendar listed a first-half 2026 report for September 29, but available results show no figures and do not establish earnings as the cause. - Major indices were mixed, offering no clear broad-market explanation.