Nvidia surges 8.3% in a week as Taiwan risk looms over supply chain

Nvidia's 8.3% weekly gain masks a vulnerability that no amount of GPU demand can fix: nearly all of its advanced chips are made in Taiwan.

Nvidia's 8.3% weekly gain to $210.96 has erased months of underperformance, but the rally obscures a supply chain concentrated on an island 180 kilometers from China's coast.

"Taiwan produces more than 90% of the world's most advanced semiconductors, and Nvidia is the single largest consumer of that capacity," said Dan Hutcheson, an analyst at TechInsights. "There is no Plan B at scale."

The stock closed Friday at $210.96, up 4% on the day, extending its weekly advance to about 8.3%. Nvidia's market capitalization now stands at roughly $5 trillion, and the company reported 85% revenue growth last quarter. Its forward price-to-earnings multiple of 16 times fiscal 2028 estimates makes it one of the cheapest mega-cap tech stocks by that measure.

Any disruption to TSMC's fabrication facilities — whether from a blockade, military action, or natural disaster — could halt Nvidia's chip supply for months, potentially wiping out hundreds of billions in market value. The company's next earnings report, expected in August, will be scrutinized for any updates on geographic diversification of its manufacturing base.

The Taiwan bottleneck

Nvidia's reliance on TSMC is well documented but rarely priced into the stock. The foundry manufactures Nvidia's H100, B200, and next-generation Rubin chips exclusively at its fabs in Hsinchu and Taichung, using 4nm and 3nm process nodes (smaller nodes pack more transistors per square millimeter, improving performance and power efficiency). TSMC's advanced packaging technology, CoWoS (chip-on-wafer-on-substrate), which stacks chips vertically to boost memory bandwidth, is also concentrated in Taiwan.

The geopolitical backdrop has grown more uncertain. Renewed U.S.-Iran hostilities this week briefly pushed oil prices higher, and while a tentative peace deal signed last month reopened the Strait of Hormuz, the fragility of regional agreements has not been lost on semiconductor investors. Taiwan's status as a flashpoint remains the single biggest unhedged risk in the AI supply chain.

Competition is watching

Nvidia's rivals are positioning to exploit any supply chain disruption. Advanced Micro Devices, whose stock has gained about 302% over the past year, has signed $100 billion GPU partnerships with both OpenAI and Meta Platforms. AMD also manufactures at TSMC but has maintained a more diversified foundry strategy, using Samsung for some lower-end chips. Intel is attempting to rebuild its foundry business as a TSMC alternative, though it has yet to win any major external AI chip customer.

Memory makers are also riding the AI wave. SK Hynix, the world's leading supplier of high-bandwidth memory, made its U.S. debut on Friday, surging 13% in its first day of trading on the Nasdaq. Micron Technology, up about 721% over the past year, trades at a forward P/E of under 6.5 times fiscal 2027 estimates. Both companies are heavily dependent on South Korean and Taiwanese manufacturing, adding another layer of geographic concentration risk to the AI hardware stack.

What investors should watch

Nvidia shares trade at 16 times forward earnings, a discount to the broader semiconductor sector despite 85% revenue growth. That valuation gap reflects the market's awareness of the Taiwan risk, but it does not fully price in a prolonged disruption scenario. The company's August earnings call will be the next major catalyst, with analysts focused on any commentary about supply chain diversification, inventory buffers, or alternative foundry partnerships.

This article is for informational purposes only and does not constitute investment advice.