Nov 20 (Reuters) - Wall Street's main indexes were

little changed on Wednesday, as investors awaited AI giant

Nvidia's quarterly results, while also eyeing rising

geopolitical tensions between Russia and Ukraine.

The Dow Jones Industrial Average rose 27.1 points, or

0.06%, at the open to 43,296.05. The S&P 500 fell 2.6

points, or 0.04%, at the open to 5,914.34​, while the Nasdaq

Composite dropped 16.2 points, or 0.09%, to 18,971.311

at the opening bell.