The firm expects Nvidia to maintain its dominant market share in chips used in data centers for ... shares rose Tuesday after analysts at Mizuho raised their price target for the company’s stock ahead of its third-quarter results due next week.

Nvidia stock may be sitting near a record high but Wall Street is getting even more bullish on the stock ahead of the chip maker’s hotly anticipated earnings next week. Nvidia surged to a record close of $148.

The Oracle of Omaha isn't always oracular. Stock-market investors are nervously eying Berkshire Hathaway's growing cash pile, wondering if it indicates Warren Buffett is getting ready for a stock-market correction or worse.