Amazon issued earnings and a forecast that didn't match what investors were thinking.
The digital advertising world is dominated by Facebook and Alphabet. When Alphabet reports third-quarter results, investors will be looking to see which side is winning the fight.
Tech giants, Big Pharma and insurers are all angling to profit from the $3 trillion-plus U.S. healthcare market.
Telecom giant is spending $85.4 billion just to stay relevant.