The two tech giants have become bitter rivals, with Uber recently accusing Airbnb of artificially inflating the share price of the service in China, which is a key target market for the Chinese government.
Both Uber and Airbnb have been pushing for greater share price transparency in China.
While Uber has been pushing the sharing economy to share price parity with traditional taxis, Airbnb has also been pushing its own share price.
The two companies have become fierce competitors in China over the past few years.
Uber has been aggressively expanding its services in China and in recent months it has been expanding into other Asian markets, including Indonesia, Malaysia and Vietnam.
Airbnb has recently expanded into China, and is reportedly planning to launch a second Chinese city in the next few months.
Airbnb shares fell by as much as 20% in early trading after the news broke, while Uber shares fell roughly 15%.