The size and value of the funding may change, Bloomberg said on Thursday, citing one of the people.
Uber's last round of financing pegged the fast-growing startup's value at $3.5 billion. The company pairs people looking for rides with drivers in major cities and is part of a crop of startups such as AirBnB now profiting off an expanding "sharing economy."
(Also see: Uber battling local lookalikes in Asia taxi-app wars)
Uber, which is backed by investors including Benchmark Capital, TPG Capital and Google Ventures, was not immediately available for comment.
© Thomson Reuters 2014
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