Uber lost $5.2 billion in 3 months. Here's where all that money went. (UBER)

Uber posted a $5.2 billion loss on Thursday, its largest ever, sending shares plummeting.
A major chunk of that loss was a consequence of two things: stock-based compensation and driver rewards, both stemming from the company's initial public offering in May. 
Other major costs for Uber include research and development, on things like self-driving cars, and sales and marketing, in order to keep growing.
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