CoreWeave Surges 21% and Super Micro Jumps 13% as AI Infrastructure Earnings Ignite Broad Sector Rally

AI infrastructure stocks posted sharp gains on Wednesday morning after blockbuster earnings from two key players. CoreWeave surged roughly 21% after the Nvidia-partnered cloud provider reported strong quarterly results with AI capacity selling out, signaling relentless enterprise demand for GPU compute. Super Micro Computer jumped as much as 13% to $35.81 after delivering a blowout fiscal 2027 outlook alongside its Q4 FY2026 report, driven by persistent AI server demand.

The halo effect lifted peers, with Dell gaining 5% and HPE rising 3% on the back of Super Micro's guidance. Nebius added 16% after reporting a 514% jump in AI cloud sales. Nvidia itself rose roughly 1.2% in premarket trading, supported both by the strong results from partner Hon Hai and by investor reassessment of its newly disclosed $500 billion financing arrangement with major Wall Street firms, which caps Nvidia's own exposure at 25% per deal and offloads credit risk to financial partners.

The broader tech-driven move came ahead of the July CPI report, which was expected to show a second consecutive month of cooling inflation, giving investors an additional tailwind. Cava and Lumentum Holdings also gained in premarket, while the AI infrastructure rally extended to HPC and data-center adjacent names.