Nokia, which invested at a $30-35m valuation, was among the exiting backers as the adtech company was bought by digital media company RNTS.

The internet company is set to contribute $20m to Snapchat's series D round, as it acquired instant messaging app MessageMe, providing Google Ventures with an exit.

Home automation company Vivint acquired the Google-backed cloud-storage company in order to enhance its smart home platform.

The Reed Elsevier-backed advertising personalisation platform was bought by Quantcast for an undisclosed sum.

The corporates area acquiring trader messaging service Perzo, and will use it as the basis for a new company, Symphony Communications.

Big data company Cloudera has acquired Google-backed business intelligence and data visualisation company DataPad.

Ibibo, the online travel joint venture by Tencent and Naspers, exited CarDekho three years after acquiring the company.

Financial services firm Citi exited the mobile shopping rewards company through the deal, which will involve Shopkick becoming part of the SK Telecom group.

Novo, Roche, GlaxoSmithKline and Novartis, all of which participated in a $41m round for Alios in April, exited the pharmaceutical company, which was bought by Johnson & Johnson.

Parkinson's disease treatment company Civitas has been bought by Acorda for $525m, weeks after it raised a $55m series C round and filed for an IPO.