Palantir stock declines for a fourth consecutive day, Nvidia, the leading maker of AI chips, reports earnings later this week, and Alibaba plans to invest more than $52 billion on artificial intelligence over the next three years.

The Berkshire Hathaway insurance and reinsurance businesses are estimated to face losses from the Los Angeles, California wildfires amounting to as much

If you're looking for dividend income from the stock, though, I have some bad news for you: Berkshire Hathaway doesn't pay a dividend. Generally speaking, companies tend to start paying regular dividends to shareholders when they have more cash than they can put to productive use.