After a troubling run in 2025, shares of American insurance giant UnitedHealth Group (NYSE: UNH) are entering their historically most powerful seasonal stretch. Data from charting platform TrendSpider shows that October and November have been the stock’s strongest months over the past two decades, with win rates of 70% and 75%, respectively.UNH seasonality chart. Source: TrendSpiderNotably, UnitedHealth stock has seen strong momentum in the past month rising by over 11% to close the session at $344. UNH one ...