Amazon falls after guidance disappoints and cloud-computing growth misses estimates, Tesla sales in China decline, Bill Ackman builds a stake in Uber, and Affirm jumps after fiscal second-quarter ...

Not only that, but the monetization of these users is improving, and in some very encouraging ways. Overall, average revenue ...

Shares of social media platform Pinterest (PINS) are soaring by over 20% in Friday's pre-market after posting $1.15 billion ...