 Premarket trading is mixed on Wall Street today. It comes after the tech sector took a drubbing yesterday over potentially worsening trade tensions with China. Futures for the Dow Jones Industrial Average ticked down 0.2%. The S&P 500 futures rose 0.2%. The tech-heavy Nasdaq, which had its worst day since 2022, rebounded and is showing a 0.4% increase ahead of the opening bell.