Amazon stock is on track to finish this week higher than it started — breaking its longest weekly losing streak since 2008.

"Our customers, shareholders, and business will be well-served by our investing aggressively now," Amazon CEO Andy Jassy wrote.

The letter is aimed at shareholders, but is closely read by employees, competitors and analysts. As is tradition, Amazon ...

Tesla could become the most valuable company in the world one day, according to Elon Musk, due to its upcoming Cybercab and ...