Foreign capital continues to flow into U.S. equities at record levels, driven largely by enthusiasm for artificial intelligence (AI)-related growth prospects. However, analysts warn that this influx could complicate the U.S. dollar’s traditional role as a safe-haven currency if market sentiment shifts. The dollar, long regarded as a refuge during times of global market volatility, is increasingly tied to risk-sensitive assets, creating potential vulnerabilities should the current AI-driven investment trend falter.

Over recent months, substantial foreign investment has targeted U.S. mega-cap stocks, hyperscaler corporate bonds, and power-grid infrastructure projects. This influx reflects strong confidence in what market participants perceive as American economic exceptionalism, supported by relatively faster growth, elevated yields, and persistent demand for U.S. financial assets. Nonetheless, experts caution that if returns related to AI and technology sectors disappoint, the unwinding of these positions could trigger a broader selloff across equities, corporate credit, and Treasury securities.

Dominic Bunning, head of G10 FX strategy at Nomura, noted that the traditional relationship between the dollar and market stress appears to have shifted. When AI valuations recently came under pressure, safe-haven flows favored currencies like the Japanese yen and Swiss franc rather than the dollar. Kevin Ford, lead FX and macro strategist at Convera, observed that the dollar’s performance is now more visibly linked to developments in the AI sector.

Unlike prior episodes marked by broad foreign direct investment, much of the current capital inflow is driven by institutional allocators responding swiftly to changes in U.S. growth prospects, interest rates, and tech valuations. Erik Nelson, global head of FX strategy at Wells Fargo, likened these flows to the “hot money” seen in emerging markets, which can be highly volatile and reactive. The AI boom has contributed to expectations of higher U.S. growth, inflation, and interest rates, all of which have supported a stronger dollar alongside rising Treasury yields.

However, if growth disappoints and forces the Federal Reserve to cut rates, the dollar’s yield advantage would diminish, potentially triggering capital outflows. Slowing domestic investment could also undermine the case for U.S. economic exceptionalism, weakening the structural demand for corporate bonds and equities. Credit market stress is increasingly visible in riskier corners of the AI ecosystem, with companies such as CoreWeave experiencing widening credit default swap spreads that raise concerns about capital spending and broader economic effects. Shaun Osborne, chief FX strategist at Scotiabank, pointed to these developments as early indicators of market fragility.

The current fiscal backdrop also differs from previous cycles. Washington is running a sizable budget deficit compared with surpluses near the 2000 technology peak, limiting the government’s ability to provide counter-cyclical stimulus without unsettling debt markets. Nelson emphasized that the critical factor will be whether a tech downturn evolves into a broader U.S.-specific credit and growth problem that could alter expectations for Federal Reserve policy. In such a scenario, the yen would likely gain at the expense of the dollar, amplifying market stress.

Still, analysts caution against assuming a dollar decline is inevitable. In episodes of extreme market stress, such as the financial crisis in 2008 and the onset of the COVID-19 pandemic in early 2020, demand for dollar liquidity surged sharply, temporarily boosting the currency. The dollar’s role as a major global funding currency could thus provide some resilience, at least in the short term.

Looking ahead, Erik Nelson described the dollar’s position as one of “substantial vulnerability” heading into 2027, driven by heightened sensitivity among global investors to shifts in U.S. growth, rates, and AI-related market risks. How this dynamic unfolds will likely have significant implications for international capital flows and currency markets in the months and years to come.