Gartner is trading 7.9% up at $201.29 on October 1, 2026, with the cause of the sharp move unclear. - The stock rose from its September 30 close of $186.54. The broader market is positive, but supplied index moves are modest and do not establish a market-wide explanation. - Gartner’s latest reported earnings were in August, and investor-relations releases show no new October 1 announcement. An available major-news report also described the premarket move as having no clear company-specific catalyst.