Investors bet big against Uber Unlisted Video

Business Insider reports that investors are betting against Uber to the tune of $1.5 billion.
The company's IPO has been struggling since it hit the exchange earlier in May.
Borrowing of Uber shares has surged by more than 160% in the past two weeks, to 36 million shares from 13.6 million.
The value of short positions in Uber has passed the value of those in Lyft for the first time.