Most readers would already be aware that UnitedHealth Group's (NYSE:UNH) stock increased significantly by 22% over

UnitedHealth Group (UNH) shares soared 12% on August 15, 2025, after Warren Buffetts Berkshire Hathaway revealed a $1.6 billion stake of over 5 million shares. The surge marks the stocks biggest jump in five years,

Year to date, the stock has fallen by nearly 45%, which is by no means normal for the healthcare stock. In fact, this is the worst it has performed since the Great Recession, when it tumbled by more than 54% in 2008.

UnitedHealth Group (NYSE: UNH) is a top health care stock with recent turbulence in earnings guidance, rising costs, and hedge fund activity.

Stock futures were mixed on Friday as investors awaited a high-stakes meeting between U.S. and Russian leaders to discuss a potential Ukraine ceasefire, with traders weighing the prospects for geopolitical de-escalation against broader market uncertainties. Here are some of Friday's biggest stock movers: