US stocks today: Nasdaq slumps 2.5%, S&P 1% as revived AI doubts ignite tech selloff

US stocks came under pressure as renewed doubts about artificial intelligence hit technology shares. The selloff was most pronounced on the Nasdaq, which fell 2.5%, while the S&P 500 declined 1%.

Technology shares lead market decline

The session highlighted the sensitivity of the broader market to changing views on artificial intelligence. Technology stocks bore the brunt of the decline as AI-related concerns returned to focus.

The Nasdaq's larger drop compared with the S&P 500 reflected the heavier pressure on the technology sector. The move also gave the market a clear signal that uncertainty surrounding AI can quickly affect major US equity indexes.

Why the move matters

The fall puts renewed attention on the role of AI expectations in the performance of technology shares. With the Nasdaq down 2.5%, the sector's weakness became a central feature of the broader market session rather than an isolated decline among individual companies.

The S&P 500's 1% drop showed that the pressure extended beyond technology stocks, although the sharper Nasdaq decline underlined where the day’s selling was concentrated.

Market outlook

The immediate market picture remains defined by revived AI doubts and their effect on tech shares. The available information does not indicate how long the selloff will last or whether the concerns will spread further.

For now, the decline underscores the market impact of changing sentiment toward artificial intelligence and the importance of technology stocks to major US indexes.