Investors are still betting on AI, but doubts are piling up

The consensus in the investing world that AI is a promising sector is beginning to waver as doubts about valuations, financing, and infrastructure costs mount. Over two-thirds of S&P 500 gains since 2024 have come from just 42 AI stocks, and venture funding for AI has been pouring in, with some firms approaching trillion-dollar valuations.

However, concerns over the financial risks and slower-than-expected adoption are causing investors to reevaluate their strategies. At the AlphaMarket 2026 conference, investors shared their worries about the short-term risks and high financing costs, while also noting the long-term potential of AI. The inflated valuation and financing structures, combined with extended timeframes for exits and increasingly competitive VC funding rounds, make it challenging for AI companies to attract investment.

A tepid IPO debut for Anthropic, a company that has pledged to use a portion of its profits for public benefit, could signal broader concerns about AI investments and potentially slow down the sector's growth.