Stock futures are mixed Thursday morning as the market takes a breather from a rally that has pushed major indexes back near record high levels.

--Year-to-date it is up 1612.51 points or 3.79% Investor appetite for AI showed no sign of slowing, as Nvidia, Arm, Oracle, and more climbed on Wednesday.

U.S. stocks were rising across the board on Wednesday morning, buoyed by the advance in megacap technology names. Under the surface, however, there is furious paddling. The Dow Jones Industrial ...