Shares of technology companies rallied after Nvidia's growth projections quelled fears about the sustainability of the artificial-intelligence boom.

Shares of technology companies rose as traders rotated back into the sector ahead of Nvidia's earnings.

Shares of technology companies rose modestly amid anxiety ahead of artificial-intelligence bellwether Nvidia's earnings.

Contracts for the tech-heavy Nasdaq 100 Index climbed 1.2%, while those for the S&P 500 Index added 0.6% after Nvidia signaled strong sales growth in 2028. The companys shares…