Energy Vault Holdings is trading 5.16% lower at $2.90 on October 16, 2026, with broader market weakness the likeliest context; no clear company-specific catalyst has been identified. - The S&P 500 was down 1.11% and Nasdaq 2.00%, amid technology and AI-spending concerns. - On October 14, the company raised full-year revenue expectations to the top half of its prior range; that positive update does not explain today’s decline.