Wall St muted at open with Fed minutes, Nvidia results on tap this week

The main U.S. stock indexes were almost flat at open on Monday, as investors awaited quarterly results from Nvidia and the Federal Reserve's policy meeting minutes due this week that will likely test Wall Street's record-breaking run.

The Dow Jones Industrial Average DJI fell 13.83 points, or 0.03%, at the open to 39,989.76. The S&P 500 SPX opened higher by 2.08 points, or 0.04%, at 5,305.35, while the Nasdaq Composite IXIC gained 16.06 points, or 0.10%, to 16,702.02 at the opening bell.