Business briefly: Tech leads US stocks broadly higher; Boeing drops

A broadly rally led by technology companies drove U.S. stocks sharply higher Monday, giving the S&P 500 its biggest increase since late January.
Nvidia was the S&P 500′s strongest performer after agreeing to buy chipmaker Mellanox. Apple benefited from an analyst upgrade. A sharp decline in Boeing stemmed the gain for the Dow Jones Industrial Average.
The S&P 500 gained 40.23 points, or 1.5 percent, to 2,783.30. The Dow rose 200.64 points, or 0.8 percent, to 25,650.88. The aver