Energy Vault Holdings is trading 6.6% lower at $4.46 as U.S. equities weaken. - Shares are reversing recent gains. - The S&P 500 is down 0.52% and the Nasdaq Composite is down 1.06%; rising crude oil and Treasury yields are pressuring risk appetite. - A September 23 announcement disclosed a 275 MW AI-data-center infrastructure order but reported no share-price movement or investor reaction.