GLD is trading at $400.36, up 4.90%, with no verified late-breaking news or after-hours gold catalyst explaining the reported jump. - Reports on October 13 described bullion as edging higher or trading near $4,180, as oil eased and investors awaited U.S. inflation data. - The September CPI release, scheduled for October 14, could affect expectations for the Fed’s rate path; available reporting does not link it to this after-hours move.