AI Stocks Today (US Market): Amazon–OpenAI Talks, Oracle’s Data-Center Shock, and the New Threat to Nvidia’s CUDA Edge (Dec. 17, 2025)
AI stocks are back in the center of the U.S. stock market conversation on Wednesday, December 17, 2025—but with a very different tone than the “everything goes up” phase earlier in the year. Today’s trade is being shaped by three big forces: capital intensity (who can afford to build the compute), platform power (who controls the cloud + chips stack), and software lock-in (who owns the developer workflow). Investopedia+2Reuters+2 That mix is showing up in real time across the AI complex—from Amazon (AMZN) and Microsoft (MSFT) at the model layer, to Oracle (ORCL) in AI cloud buildout, and Nvidia (NVDA) and Alphabet (GOOGL/GOOG) in the fight over the infrastructure and tooling that powers AI development. Reuters+3Reuters+3Investopedia+3 US stock