Markets Fall Further After Tech Selloff. Nvidia Earnings in Focus.

Markets were on course to open in the red Tuesday as the chip-stocks rally that has powered gains for much of the year continued to lose steam. Stock futures tied to the tech-heavy Nasdaq were down 0.6%, having finished 1.5% lower the previous session led lower by a Big Tech selloff. Dow Industrial futures were falling 60 points, or 0.1%, while S&P 500 futures dropped 0.3%.