Futures slide as U.S. regional bank strain raises fears

U.S. stock futures turned negative as investors digested mounting stress in the regional banking sector. Zions Bancorporation and other smaller banks disclosed elevated loss provisions, stoking comparisons to past regional bank failures. Futures on the Dow Jones, S&P 500, and Nasdaq all slipped ~0.6–1%. The move came despite strength in large tech names, as credit markets and financials came under renewed scrutiny. Many traders cautioned elevated volatility into the open.