NVDA, MSFT, GOOGL lead $6T AI rally as China approves H200 chip sales

The AI infrastructure narrative is accelerating dramatically after multiple catalysts converged this week. US government approval to export Nvidia's H200 chips to mainland China lifted sentiment around AI buildout timelines, while Nvidia CEO Jensen Huang's appearance in Beijing alongside Trump signaled continued commerce despite geopolitical tensions. The market is interpreting this as a green light for sustained AI capex cycles that will flow through the entire semiconductor and cloud stack. Cisco's positive guidanceCompany-issued forecasts of future financial performance. on AI networking demand provided additional confirmation that the buildout is widening beyond just GPUs into switches, optics and scale-across infrastructure, exactly the type of breadth that sustains rallies.

Nvidia has gained roughly $1 trillion in market value in the past week alone as traders chase what they see as a multi-year capex supercycle. MSFT is benefiting from the same tailwind, with JPMorgan noting that the key question is not whether Microsoft can monetize AI but how quickly margins show up in earnings. Google has captured investor attention with reports of a new efficiency breakthrough, cutting AI memory use by 6x, positioning it as a differentiated long-term AI play. Broadcom and other semiconductor equipment suppliers are also seeing renewed buying pressure.

What is striking is the breadth of participation. The narrative has evolved from "Nvidia trades to $2 trillion" to a more mature discussion of AI infrastructure layers: model training, inference, networking, and the cloud platforms that aggregate demand. This is lifting not just the obvious names but also smaller semiconductor plays and networking vendors that profit from the entire stack. The concentration risk in mega-cap AI names remains acute, but the market is convinced the capex cycle justifies multiples.

Bears argue that AI capex is becoming increasingly contentious politically and that margins may compress as competition in inference tightens. Some traders also note that sentiment is stretched; one X post noted seeing someone try to convince his girlfriend to put her entire portfolio into Nvidia. Historical parallels to prior tech rallies suggest when retail FOMOFear Of Missing Out - buying because others are profiting. reaches that intensity, tops often follow. Still, for now, the institutional bid for AI infrastructure names remains intact and the earnings trajectory is undeniable.