CoreWeave and Super Micro Shares Surge as AI Infrastructure Earnings Blow Past Estimates

AI infrastructure stocks rallied sharply on August 12 after blowout results from CoreWeave and Super Micro Computer set the tone for the sector. CoreWeave jumped roughly 18-21% after reporting that its AI cloud capacity had effectively sold out, confirming relentless demand for GPU compute. Super Micro Computer surged 13-17% to around $35.81 after the company delivered a blowout fiscal 2027 revenue outlook alongside its Q4 FY2026 report, with the strong guidance lifting peers Dell by 5% and HPE by 3%.

Nebius added to the momentum, reporting a 514% year-over-year jump in AI cloud sales. Separately, Nvidia rose roughly 1% in premarket trading after CEO Jensen Huang addressed concerns around a bold $500 billion financing plan, under which Nvidia's exposure is capped at 25% per deal while Wall Street absorbs the bulk of balance sheet risk, a structure analysts said supports sustained demand visibility and could translate to 40-50% of that capital as Nvidia revenue over four years. Nvidia also unveiled an 800-volt DC power architecture designed to boost AI data center performance.

Hon Hai's better-than-expected quarterly profit, reported overnight, further signaled robust global AI hardware demand. Lumentum gained more than 8% in premarket trade on strong Q4 results tied to AI data center optical components. The broad AI stock advance came even as the consumer price index print was absorbed by markets, with investors focused squarely on the earnings signal that enterprise spending on AI servers, cloud capacity, and chips remains far ahead of supply constraints.