The stock market tumbled last week, led by highly valued growth plays such as Palantir and Tesla. Nvidia earnings loom.

Warren Buffett’s annual letter to Berkshire Hathaway ($BRK.A) ($BRK.B) shareholders is always a highlight, and this year was no different. He ...

The opportunity-starved organization is likely to start making major investments again -- just in a different way.

Christopher Ruane zooms in on a share that has performed brilliantly for mega-investor Warren Buffett -- and considers whether to buy it himself.