US Stock Market Today: S&P 500, Dow Open Flat As Chip Stocks Fall On China Deal

US Stock Market Today: Wall Street's main indexes opened flat on Monday as major chip companies slipped on the eve of a key tariff deadline after a trade policy shift that involves sharing a portion of revenue from China sales with the Trump administration.

The Dow Jones Industrial Average rose 8.8 points, or 0.02%, at the open to 44,184.36. The S&P 500 fell 0.2 points, or flat at the open to 6389.67​, while the Nasdaq Composite rose 9.6 points, or 0.04%, to 21,459.654 at the opening bell.