US stock indices opened sharply higher on Monday, with the tech-heavy Nasdaq climbing over 2%, as investors cheered the White House’s move to exempt smartphones and computers from tariffs.

At the opening bell, the Dow Jones Industrial Average rose 333.4 points, or 0.83%, to 40,546.15. The S&P 500 rose 78.6 points, or 1.47%, to 5,441.96​, while the Nasdaq Composite rose 396.0 points, or 2.37%, to 17,120.442.