The S&P 500 also weakened and sank 0.8%, as the benchmark index held just above its 50-day moving average. The S&P 500 also snapped a nine-day winning streak on Monday. The index ...

Elon Musk is mostly gone from Washington, but one of his lieutenants wants to use artificial intelligence to continue its mission to shrink the federal headcount. Tech critics are skeptical.

Two chipmakers reporting earnings in the coming days will give investors insight into how demand for artificial intelligence ...