Bank of America issued a warning on the AI stocks rally in a June 26 research note, stating that the surge in artificial intelligence spending has created unusually strong profit expectations but that it now sees growing risks to that outlook. The bank said lower-cost AI models and rising competition could make it harder for companies to sustain premium pricing, as businesses increasingly evaluate cheaper open-source offerings and new tools may reduce customer dependence on a single provider. Bank of America noted these trends could pressure margins. The firm also pointed to investor caution around major technology companies, stating that U.S. hyperscalers have trailed the broader market by nearly 15% since January, which may reflect concerns about future returns on heavy AI-related spending. Beyond technology, Bank of America maintained a cautious stance on European equities and cyclical sectors, saying industries tied closely to the AI buildout, including semiconductors, capital goods, and mining, appear among the most stretched areas of the market, while defensive sectors such as consumer staples may offer relative stability during any AI-driven market pullback.