Bank of America Warns Investors About Diminishing Returns in AI Spending

Bank of America (BofA) has issued a warning to investors regarding the potential for diminishing returns from AI-related investments. According to BofA strategists, the era of easy gains in AI spending is coming to an end, as major players in the sector continue to invest heavily while the market grows increasingly uncertain about the returns on these investments.

BofA projects that capital expenditures by US hyperscalers—large cloud service providers like Microsoft, Alphabet, and Amazon—will reach approximately $795 billion in 2026 and nearly $1.08 trillion in 2027. Despite this significant spending, by June 2026, these hyperscalers were underperforming the S&P 500 by nearly 15% year-to-date, indicating a lack of confidence in the expected returns from such investments.

The bank's equity strategy note highlighted that the AI-driven stock rally might be losing momentum, with companies beginning to ration their AI usage and shift towards more cost-effective models. This trend raises concerns about the competitive landscape and the sustainability of premium pricing in the AI sector.

In BofA’s August 2026 Global Fund Manager Survey, 38% of respondents identified AI hyperscaler capital spending as a potential source of systemic credit risk. Furthermore, discussions surrounding AI spending dominated 80% of BofA's client meetings in September, drawing parallels to historical tech booms.

With hyperscalers relying heavily on debt to finance their spending—reportedly reaching a capex-to-free-cash-flow ratio of around 94%—the pressure is mounting. Investors are advised to monitor corporate AI usage, pricing resistance, and whether hyperscaler capex guidance continues to rise towards the projected trillion-dollar levels.