Nasdaq Composite Falls 2.86% as AI Investment Concerns Weigh on Tech

The Nasdaq Composite fell 2.86% Friday, extending its October decline as investors reassessed artificial intelligence investment costs against potential returns. The move adds pressure to the broader risk backdrop crypto traders monitor. Selling pressure spread beyond mega-cap technology companies and into semiconductor stocks, widening the retreat across the technology sector. Investors are weighing the spending behind the AI boom against the returns it may generate, putting both large technology companies and chipmakers within the same market reassessment. The decline challenges a technology rally that powered Wall Street for much of 2026.