If any investor has stood the test of time, it is Warren Buffett, and with good reason. For years, the “Oracle of Omaha” has ...

Investing.com -- UnitedHealth Group Inc (NYSE: UNH ). stock rises 3% in premarket trading Monday, extending Friday’s 12% rally after Warren Buffett’s Berkshire Hathaway Inc . (NYSE: BRKa) disclosed a ...

Here are some of the biggest premarket U.S. stock movers today: Palo Alto Networks (NASDAQ: PANW) stock rose 0.4%, with the ...