Wall Street’s optimism toward the artificial intelligence (AI) sector is rapidly warming up again. Following a recent wave of notable pullbacks, UBS stated clearly in its latest strategy report that the market’s pessimistic expectations for AI-related assets have become excessive. The bank characterized the prior adjustment as essentially a “summer washout” driven by capital flows, rather than a deterioration in industry fundamentals. As the U.S. stock earnings season officially kicks off, the bank expects corporate profits to once again validate the high prosperity of the AI industry chain, propelling the rally forward.
In a client note released on Wednesday, the UBS strategy team led by Gerry Fowler utilized its proprietary “Theme-o-Meter” to gauge the strength of market themes. The data shows that the AI theme has jumped back to the top spot among all investment themes, primarily benefiting from sustained improvements in earnings expectations and a warming macro environment. “We expect the earnings season to further reinforce the trend of upward earnings revisions and continue to drive excess returns for the AI theme,” Fowler emphasized in the report.
Capital Rotation, Not a Paradigm Shift; Pullback Deemed a ‘Summer Washout’
Regarding the selling pressure that triggered market anxiety, UBS provided a clear assessment. The bank believes that the recent pullback in the AI sector is inconsistent with industry fundamentals. The decline was primarily attributed to typical summer deleveraging, investor profit-taking, and institutional position rebalancing, with no substantial negative changes to the industry’s outlook. This stands in stark contrast to pessimistic market narratives warning of a bursting AI bubble.
Stephen Ju, an analyst covering the internet research sector, further supplemented this view with strong evidence from the demand side. He pointed out that current demand for AI continues to outstrip infrastructure supply capacity, and capital expenditure from hyperscale cloud service providers is more likely to be revised upward. This supply-demand imbalance is expected to drive further improvements in earnings expectations across the entire AI industry chain, providing solid fundamental support for stock prices.
Market fund flows also corroborate this perspective. Data from Barclays shows that current market returns are highly concentrated in a few sectors. Over the past 12 months, only 37% of individual stocks have outperformed the S&P 500, which is not only down from 40% in the previous quarter but also significantly below the historical average of the past seven years. This indicates that capital has not withdrawn entirely but is instead consolidating around main themes with clear upward earnings revision logic, with AI being the core of this trend.
Healthcare Emerges as a Standout, Consumer Sector Momentum Lags
Beyond the main AI theme, UBS simultaneously upgraded the healthcare sector, listing it as another key allocation focus alongside AI. Strategists analyzed that the earnings downgrade cycle for this sector is nearing its end, with fundamentals continuously improving, the regulatory environment stabilizing, and market sentiment repairing.
The report specifically highlighted several structural bright spots: substantial long-term growth potential in the weight-loss drug market, strong earnings resilience among large pharmaceutical companies, and the biotech sector poised to benefit from a recovery in M&A activity and key product catalysts. More importantly, AI is accelerating its penetration into drug discovery, clinical development, and medical diagnostics, driving the life sciences tools industry out of its inventory cycle. UBS believes the entire healthcare sector is entering a new phase of earnings improvement.
In contrast, the outlook for the consumer sector appears dim. UBS continues to rank consumer staples and consumer discretionary as the weakest investment themes currently. The bank argues that these two sectors still lack sustained upward earnings revision momentum, making it difficult to attract large-scale capital inflows in an environment where market funds are extremely selective.
Overall, the UBS report paints a picture of a highly fragmented market. The performance divergence between individual stocks and sectors is widening, with market excess returns still concentrated in a few themes possessing sustained earnings improvement capabilities. For investors, closely following the profit signals released during earnings season will be key to verifying whether the AI bull market can make a full-fledged comeback.