New York, February 26, 2026 — In a significant shift signaling growing caution within global financial markets, UBS’s esteemed head of global equity strategy, Andrew Garthwaite, has downgraded American equities to "benchmark" within a fully invested global equity portfolio. This adjustment, announced on February 25, 2026, reflects mounting apprehension over a confluence of factors, including a weakening U.S. dollar, increasingly stretched valuations across domestic sectors, diminishing corporate buyback support, and persistent policy turbulence emanating from Washington. The move marks a strategic recalibration for the investment bank, suggesting that the potent drivers that have fueled years of U.S. market outperformance may now be losing their efficacy.
The Retreat of the Dollar and its Historical Echoes
A central tenet of Garthwaite’s revised outlook is the projected trajectory of the U.S. dollar. UBS forecasts a continued depreciation, with the euro expected to climb to $1.22 by the close of the first quarter of 2026. Beyond this immediate projection, the bank identifies "asymmetric structural downside risks" to the greenback, implying that the potential for further weakening significantly outweighs any prospects for sustained appreciation. This outlook is not merely an academic exercise; historical market patterns lend considerable weight to UBS’s concern. The investment bank’s analysis indicates a clear correlation: historically, a 10% decline in the dollar’s trade-weighted index has typically coincided with a roughly 4% underperformance of U.S. equities in unhedged terms.
This relationship is multifaceted. A weaker dollar can erode the returns for international investors holding U.S. assets, effectively making dollar-denominated stocks less attractive. Conversely, it can boost the reported earnings of U.S. multinational corporations when they repatriate profits earned in stronger foreign currencies. However, the net effect, particularly for broad market performance, can often be negative, especially if the dollar’s weakness signals broader economic concerns or a loss of confidence in U.S. assets. Analysts across the financial spectrum have been closely monitoring the dollar’s performance, noting that the currency has indeed been on a depreciatory trend since late 2025, driven by evolving interest rate differentials, global economic rebalancing, and geopolitical developments. This trend makes foreign markets, which are already demonstrating robust growth, even more appealing to global capital.
Exorbitant Valuations Under Scrutiny
Another critical pillar of UBS’s downgrade rests on the perceived overextension of U.S. equity valuations. Garthwaite’s team calculates that the sector-adjusted price-earnings (P/E) ratio for U.S. stocks currently stands at a striking 35% premium relative to their international counterparts. This figure dwarfs the historical average premium of approximately 4% observed since 2010, highlighting a significant divergence that UBS believes is unsustainable. The analysis further reveals that roughly 60% of U.S. sectors are not only trading at higher multiples than their global peers but also above their own historical premium levels, suggesting a pervasive overvaluation rather than an isolated phenomenon in a few high-growth sectors.
For context, the period following the 2008 global financial crisis saw U.S. equities gradually establish a premium over other developed markets, fueled by technological innovation, robust corporate earnings, and a perception of greater stability. However, this premium has expanded dramatically in recent years, particularly since the resurgence of artificial intelligence (AI) narratives and a flight to perceived quality. While growth companies, especially in the tech sector, have traditionally commanded higher valuations, the current spread suggests that even mature, traditionally stable sectors in the U.S. are priced at levels that offer limited upside and increased risk in a slowing global growth environment. Investors are increasingly questioning whether current earnings growth can justify these elevated prices, especially as borrowing costs remain higher than in the ultra-low interest rate era.
Fading Support from Corporate Buybacks
Historically, aggressive corporate buyback programs have been a significant tailwind for U.S. equity performance, boosting earnings per share (EPS) by reducing the number of outstanding shares and attracting investor flows. However, UBS’s analysis suggests that this crucial support mechanism is now losing its edge. The bank notes that the buyback yield in the U.S. is now only roughly on par with global peers, eroding what had once been a distinctive advantage. More strikingly, the combined shareholder yield, encompassing both dividends and buybacks, in the U.S. is now estimated to be about half that of Europe.
Andrew Garthwaite underscored this point, stating, "The buybacks yield is no longer exceptional, and this had been an important driver of funds flow, EPS, and valuation." This shift can be attributed to several factors. Rising interest rates have made debt-funded buybacks less attractive, while increased regulatory scrutiny and political pressure on companies to prioritize reinvestment in growth, employee wages, or sustainability initiatives over share repurchases have also played a role. Furthermore, some companies may be preserving cash amidst economic uncertainty or opting for strategic mergers and acquisitions rather than returning capital directly to shareholders through buybacks. The reduction in this powerful market support mechanism forces investors to re-evaluate the true underlying earnings power and growth prospects of U.S. corporations without the artificial lift provided by shrinking share counts.
Navigating Policy Turbulence from Washington
The political landscape in Washington, characterized by a renewed period of policy volatility under President Donald Trump’s administration in 2026, further contributes to UBS’s cautious stance. The past year has witnessed a series of policy proposals and shifts that introduce considerable uncertainty for businesses and investors alike. These include, but are not limited to, changes in tariff policy that could disrupt global supply chains and trade relationships, proposals to cap credit card interest rates impacting the financial sector, potential limits on private equity investment in housing that could reshape real estate markets, renewed scrutiny of drug pricing threatening pharmaceutical profits, and even suggestions to curb dividends and buybacks for defense companies.
Such a dynamic and unpredictable policy environment creates significant headwinds. Businesses thrive on certainty, allowing them to plan investments, manage costs, and forecast revenues with reasonable confidence. Frequent and often abrupt shifts in policy, especially those that directly impact profitability or operational frameworks, introduce an element of risk that can deter investment and depress valuations. The market’s reaction to these policy pronouncements has often been one of apprehension, with sectors directly targeted experiencing heightened volatility. This "policy premium" for risk, as some analysts term it, further justifies a more conservative approach to U.S. equity allocations, as the costs associated with adapting to or mitigating policy changes can weigh heavily on corporate balance sheets and investor sentiment.
A Clear Shift: Market Performance and Capital Rotation
The consequences of these underlying shifts are already evident in market performance figures for 2026. Foreign markets are notably outperforming their U.S. counterparts, signaling a significant rotation of capital away from American equities. As of late February 2026, the MSCI World ex-US index had gained approximately 8% year-to-date, contrasting sharply with the S&P 500’s largely unchanged performance. Regional benchmarks illustrate this divergence even more starkly: Japan’s Nikkei 225 has rallied an impressive 17% year-to-date, while the Stoxx Europe 600 is up 7%.
This pronounced shift underscores a broader trend where investors are increasingly seeking value and growth opportunities outside the U.S. A weaker dollar makes investments in these foreign markets more attractive in local currency terms for international investors, and also for U.S. investors when repatriating foreign gains. Furthermore, many international markets are perceived to offer more reasonable valuations and are benefiting from their own unique growth drivers, such as robust domestic demand in some Asian economies or improving economic fundamentals in parts of Europe. The S&P 500’s struggles, particularly on the preceding Friday, were attributed to lingering investor anxieties over the potential downsides of the intensive artificial intelligence build-out and the persistent challenge of domestic inflation, which continues to exert pressure on consumer spending and corporate margins.
Expert Perspectives and Broader Market Sentiment
Andrew Garthwaite, a seasoned veteran in global equity strategy, holds considerable sway within the investment community. His downgrade, therefore, is likely to prompt a re-evaluation of U.S. equity allocations by institutional investors worldwide. While UBS’s internal target for the S&P 500, set by strategist Sean Simonds, is 7,500 for year-end 2026, this figure remains below the average forecast of 7,629 among 14 top strategists surveyed by CNBC Pro. This discrepancy highlights a divergence of opinion within Wall Street, with UBS adopting a more conservative stance than some of its peers, though the consensus itself suggests a tempered outlook compared to prior years.
Market observers widely acknowledge the pressure points identified by UBS. Economists have debated the long-term implications of dollar depreciation, while valuation experts have continuously flagged the U.S. market’s premium. The discussion around corporate buybacks and their impact on market fundamentals has also gained prominence in recent years. Analysts at rival firms, while not explicitly endorsing UBS’s full downgrade, have also flagged similar concerns regarding market concentration, the sustainability of tech-driven growth, and the potential for policy shifts to introduce volatility. This collective apprehension suggests a broader sentiment of caution beginning to permeate financial markets, moving away from the unbridled optimism that characterized much of the post-pandemic recovery.
Counterpoints and Remaining Tailwinds
Despite the significant headwinds, Garthwaite stopped short of turning outright bearish on U.S. equities. His nuanced perspective acknowledges certain enduring strengths that could still support the U.S. market. One key argument is that the U.S. economy and its equities tend to benefit disproportionately during the early phases of a potential market bubble. This phenomenon often sees capital flocking to perceived leaders and innovators, which the U.S. market, particularly its technology sector, exemplifies. In such environments, liquidity tends to concentrate in fewer, larger names, pushing valuations higher even as broader market fundamentals may appear stretched.
Furthermore, UBS maintains an optimistic view on the adoption of artificial intelligence. The bank anticipates that AI adoption in the U.S. will continue to outpace most other major regions globally, with the possible exception of China. This rapid integration of AI technologies across various industries is expected to sustain robust earnings growth for key sectors and companies, providing a significant tailwind. The U.S. remains a global leader in AI research, development, and commercialization, attracting substantial venture capital and fostering an ecosystem of innovation. This technological edge could partially offset some of the macro-level challenges, allowing certain segments of the U.S. market to continue performing strongly even if the broader market experiences a slowdown. The U.S. also benefits from a dynamic entrepreneurial culture, strong intellectual property protections, and a relatively flexible labor market, all of which contribute to its long-term economic resilience and capacity for innovation.
Implications for Investors and Outlook
The implications of UBS’s revised outlook are far-reaching for investors, both institutional and retail. The shift from "overweight" to "benchmark" suggests a move towards a more balanced, diversified portfolio rather than an aggressive underweighting. For those heavily concentrated in U.S. stocks, this could be a signal to re-evaluate their geographic exposure and consider increasing allocations to international markets, which appear to offer more compelling valuations and stronger momentum. Investors may also need to temper their expectations for U.S. equity returns in the near to medium term, focusing more on value and dividend-paying stocks rather than solely on high-growth narratives that may already be priced for perfection.
The ongoing debate centers on whether this is merely a temporary correction or the beginning of a more fundamental, long-term shift in global market leadership. While the U.S. has enjoyed a prolonged period of dominance, the confluence of a weakening dollar, stretched valuations, fading buyback support, and policy uncertainty presents a formidable challenge. The narrative suggests that while U.S. innovation, particularly in AI, remains a powerful force, investors can no longer afford to overlook the compelling opportunities and potentially more attractive risk-reward profiles offered by other global markets. As 2026 progresses, market participants will be closely watching for further indications of dollar strength or weakness, the trajectory of corporate earnings, and the clarity (or continued turbulence) of policy decisions from Washington, all of which will shape the unfolding landscape of global equity performance.
