(Reuters) - The tech-heavy Nasdaq index opened slightly higher on Thursday, as investors weighed the AI chip giant's upbeat forecasts against concerns around the Sino-U.S. trade war's impact on sales.

The Dow Jones Industrial Average rose 15.8 points, or 0.03%, at the open to 45,581.03. The S&P 500 rose 2.4 points, or 0.04%, at the open to 6,483.84​, while the Nasdaq Composite rose 29.1 points, or 0.13%, to 21,619.273 at the opening bell.

(Reporting by Sanchayaita Roy; Editing by Devika Syamnath)