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China's accelerating artificial intelligence push is beginning to challenge one of the assumptions that has helped sustain U.S. financial dominance: that global investors have few credible alternatives to American technology companies and dollar-denominated assets.
That "TINA" trade — shorthand for "there is no alternative" — has helped channel enormous amounts of international capital into the United States, reinforcing the strength of Wall Street, the dollar and the country's technology giants. But Nomura warns that the resulting concentration has also created vulnerabilities, particularly as China attempts to build a competing technology ecosystem spanning artificial intelligence, semiconductors, cloud computing and advanced manufacturing.
The immediate threat is not that investors will suddenly abandon U.S. markets for China. American capital markets remain deeper and more liquid, while U.S. companies retain major advantages in advanced chips and frontier AI. Rather, China's emergence creates something TINA implicitly assumes does not exist: an alternative technological growth story large enough to influence the allocation of global capital.
China Tests the "No Alternative" Assumption
For much of the past decade, investors seeking exposure to the world's fastest-growing technology businesses had powerful incentives to look to the United States. Companies including Nvidia, Microsoft, Alphabet, Amazon and Meta became central to the global AI boom, helping push U.S. equity valuations higher and drawing more international capital into American markets.
China's technology sector increasingly complicates that calculation. Chinese companies have pushed ahead with increasingly capable AI models while Beijing has made technological self-sufficiency a strategic priority. The emergence of DeepSeek in early 2025 was particularly significant because it demonstrated that a Chinese developer could produce a highly competitive AI model despite U.S. restrictions on China's access to the most advanced American semiconductors.
The consequences extend beyond competition between individual AI models. Companies including Alibaba, Tencent and Baidu have been expanding AI services and infrastructure, while Huawei has emerged as the most important Chinese challenger to Nvidia in AI processors. Beijing is simultaneously encouraging domestic semiconductor production as it seeks to reduce dependence on technology vulnerable to U.S. export restrictions.
Taken together, those developments raise the possibility of a more distinct Chinese AI ecosystem — one using Chinese models, chips, cloud infrastructure and applications. Such a system does not need to displace the American technology stack globally to matter to investors. It needs only to become sufficiently competitive to weaken the assumption that U.S. technology represents the unavoidable destination for capital seeking AI growth.
That possibility has important implications because global exposure to U.S. assets is already exceptionally large. Nomura estimates that the ratio of America's net international investment position liabilities to the combined assets of the world's net creditor economies has climbed to about 80%. U.S. net international investment liabilities reached $21.9 trillion in 2025, while portfolio liabilities stood at $37.4 trillion in March 2026.
AI Competition Exposes a U.S. Vulnerability
China's challenge arrives as the American economy becomes increasingly tied to an extraordinary AI investment cycle. Spending on data centers, processors, networking equipment and electricity infrastructure has surged, while a relatively small group of technology companies accounts for a large share of U.S. stock market value and investment.
The five largest U.S. technology companies spent about $380 billion on capital investment in 2025 and were expected to roughly double that expenditure in 2026, according to research published by the National Bureau of Economic Research. Federal Reserve research has meanwhile found that information-processing equipment, software and data-center construction accounted for roughly one-third of U.S. business investment in the third quarter of 2025.
That creates a striking imbalance. American leadership in AI attracts capital from around the world, which pushes U.S. asset prices higher and reinforces the perception that there is no attractive alternative. Higher valuations then provide American technology companies with greater resources to invest in AI, strengthening the same investment narrative.
China potentially disrupts that cycle.
If Chinese companies demonstrate that competitive AI systems can be developed more cheaply, the assumptions underpinning enormous American capital expenditure programmes could come under greater scrutiny. DeepSeek provided an early illustration of that risk when its emergence prompted investors to question whether ever-larger expenditure on computing infrastructure was essential to maintaining AI leadership.
The issue for Wall Street is therefore not simply whether Chinese companies can defeat their American rivals. It is whether China can introduce enough competition to change expectations about future U.S. profitability, investment requirements and technological dominance.
Even a relatively small reassessment could matter because foreign investors hold such large quantities of American securities. A sustained correction in U.S. technology shares could reduce the attraction of those assets, potentially encouraging international investors to diversify. That in turn could place pressure on the dollar and raise the risk premium attached to U.S. securities.
China Does Not Have to Replace America
There remain formidable barriers to China becoming a direct alternative to U.S. markets. Washington's controls continue to restrict Chinese access to leading-edge AI chips and semiconductor manufacturing technology. Chinese equity markets have also struggled with concerns over regulation, transparency, the property downturn and weak domestic demand.
American advantages remain substantial. U.S. companies dominate important parts of the AI supply chain, from Nvidia's processors to hyperscale cloud infrastructure, while the country's universities, venture capital industry and technology companies continue to attract international talent and investment.
But the significance of China's rise is precisely that it does not need to eliminate those advantages to undermine TINA. The doctrine depends on alternatives remaining insufficiently attractive. A China capable of offering competitive AI models, a progressively more independent semiconductor industry and large technology companies selling AI services throughout Asia and emerging markets makes that assumption harder to sustain.
The result could be gradual rather than dramatic. Investors seeking diversification might increase allocations to Chinese or other Asian technology markets without substantially reducing their U.S. holdings. Companies could adopt Chinese AI systems in some markets while continuing to use American technology elsewhere. Developing economies could increasingly choose between competing technology ecosystems rather than relying overwhelmingly on American suppliers.
Such fragmentation would represent a significant change in the economic geography of the AI boom. For years, technological leadership, dollar dominance and the depth of U.S. financial markets have reinforced one another, creating a powerful magnet for global savings. China is now attempting to break at least part of that relationship by establishing an alternative center of technological development.
Nomura's warning therefore points to a risk larger than a conventional technology market correction. The AI boom has strengthened America's attraction to global investors, but it has also increased their concentration in U.S. assets at the same moment that China is working aggressively to demonstrate that American technological dominance is not inevitable.
That makes China's AI advance important even if Beijing never replaces Silicon Valley as the center of global technology. TINA does not collapse only when another market overtakes the United States. It begins to weaken when investors conclude that there is, after all, an alternative.
