US stocks fall on Friday, giving back earlier gains that had been fueled by strength in artificial-intelligence related stocks after Amazon.com’s results. Multiple outlets report that Amazon shares rise sharply—about 15%—following the company’s strong performance, which lifts sentiment across a wider group of companies viewed as benefiting from ongoing demand for AI capabilities. Despite this initial market boost, the broader index movement turns negative later in the session. The coverage characterizes the move as a fade in the AI-driven rally rather than a continuation of the momentum sparked by Amazon’s blowout results. Overall, the reports agree that investor optimism tied to AI themes initially supports equities, but selling or reduced risk appetite later pushes US stocks lower, erasing much of the earlier advance. The news reflects a day where a major earnings-driven stock jump does not prevent the market from ending in negative territory.