Stock market today: Wall Street opens higher, adding to last week's gains

U.S. stocks are ticking higher as last week’s rush of market-moving events gives way to what could be a quieter week. The S&P 500 was up 0.5% early Monday. The Dow Jones Industrial Average was up 164 points, and the Nasdaq composite was up 0.5%. Berkshire Hathaway rose after Warren Buffett’s company reported its latest results over the weekend. This week will bring speeches from several Federal Reserve officials, a preliminary report on consumer sentiment, and earnings reports from The Walt Disney Co. and Uber Technologies. Treasury yields were flat in the bond market.