The corporate-backed online content management company will float above its range today, after raising nearly $600m in venture capital.

Dow Chemical exited the diagnostic testing company, which had raised $24m in total, through the acquisition.

Electric motorcycle company Brammo has been acquired by one of its investors, vehicle company Polaris Industries, with Best Buy also exiting in the deal.

Twitter has agreed to buy the Times Internet-backed mobile marketing company for a price reported to be about $40m.

Cisco and UMC-backed fabless semiconductor producer EnVerv has been acquired by semiconductor supplier Semtech.

Mobile game developer Kabam has acquired games studio TapZen, which had raised $18m in venture funding from Tencent and Zynga.

Cloud payment provider Bottomline Technologies has acquired the fraud detection and prevention company for $67m.

Alibaba has acquired a majority stake in News Corp-backed digital advertising platform AdChina for an undisclosed sum.