Among the Nasdaq 100 stocks, Analog Devices ADI and Palo Alto Networks PANW rallied 3.7% and 1.6%, respectively, making them some of the best performers at the market open. On the downside, Intel INTC and Micron Technology MU tumbled 4.1% and 3.6%, respectively.

The Dow Jones Industrial Average was on track for its first record close since December on Friday after Federal Reserve Chair Jerome Powell opened the door to a September rate cut, sparking a broad stock-market rally.

Berkshire Hathaway and the Dow Jones Industrial Average have some overlap on stocks that are held in both investment portfolios.

Dow Jones futures dropped ahead of Friday's speech from Fed Chair Jerome Powell. Amazon and Nvidia stock fell Monday.

U.S. stocks opened higher Friday, showing signs of stabilization after retreating this week ahead of Fed Chair Jerome Powell's Jackson Hole speech. The Dow Jones Industrial Average rose 284 points, or 0.