XIAO-I is trading 13.18% higher at $2.49 in pre-market after rebounding from its October 19 close, with no confirmed catalyst identified. - It closed at $2.20 on October 19 after a steep decline during the regular session. - No verified company-specific announcement dated October 19–20 was listed; coverage did not identify a confirmed catalyst for the after-hours move. - Major U.S. indices were mixed in the supplied market context, so broader-market direction does not clearly explain the gain.