Amazon beats Q4 estimates, but weak Q1 guidance sends shares down 4% after hours. Traders eye AWS growth and retail trends ...

Another seasonal trend is the four-year U.S. presidential cycle. In general, the market rises modestly in the first year after a presidential election, followed by trouble in the second year. In years ...

Nasdaq 100 rises as Amazon gains ahead of earnings, while semiconductors slide. Traders watch key payroll data for Fed rate ...