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

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.

Vanguard is known for its low-cost funds, and the Vanguard S&P 500 ETF is no exception. You'll pay an expense ratio of just 0.03%, which means for every $1,000 you have invested, you'll pay only $0.30 ...