The medical device developers have agreed a merger, and Merck and Mayo Clinic, both of which have funded Preventice, will continue to support the new company.

The car rental company is one of several cornerstone investors that will invest $30m as the China-based company seeks $467m from a Hong Kong initial public offering.

The pharmaceutical company, which is developing treatments for disorders including neuropathic pain and Crohn's Disease, is backed by investors including AbbVie.

The offering will value the corporate-backed incubator and venture fund at approximately $6.45bn.

Cox Media made its third investment in the marketing company, which has also acquired video content platform Vidaao.

Google and Nokia are both exiting from the image advertising network, which had raised more than $28m, through an acquisition by Yahoo.

The e-commerce company is planning to launch the largest IPO ever, putting Yahoo in line to earn $8bn.

The exit is likely to have made a strong return for T-Venture, Deutsche Telekom's corporate venturing unit, which dubbed the company "a star performer" and the deal a "successful exit".