Futures signaled a down open about an hour ahead of the opening bell. Tom White points to Samsung's earnings as a main culprit. The memory chipmaker beat and significantly raised guidance estimates, though shares fell due to not meeting an impressively high bar. More military operations in the Strait of Hormuz also gave global trade a black eye, says Tom White. It all comes as SpaceX (SPCX) begins trading in the Nasdaq-100 (NDX) at the start of Tuesday's session.