Oct 6 (Reuters) - Wall Street's main indexes opened

higher on Monday, building on last week's gains, as AMD's

chip-supply tie-up with OpenAI became the latest in a

series of AI deals and offset concerns around a prolonged

federal government shutdown.

The Dow Jones Industrial Average rose 17.8 points, or

0.04%, at the open to 46,776.04. The S&P 500 rose 18.1

points, or 0.27%, at the open to 6,733.86​, while the Nasdaq

Composite rose 113.8 points, or 0.50%, to 22,894.352.

(Reporting by Niket Nishant and Sukriti Gupta in Bengaluru;

Editing by Devika Syamnath)