Teradata acquired 11% of Aster Data Systems in September, and has agreed to pay an additional $263m for the remaining ownership interest, net of debt and other expenses and including $21m in cash on its book.

Japan-based drugs group Daiichi Sankyo is paying $805m in cash and a further $130m in performance fees for oncology treatment company Plexxikon, which is Astellas Venture Management's ninth exit.

Tim Phillips, general manager of the Enterprise Power Business Unit of International Rectifier (IR), said: "The acquisition is the next logical step after our successful strategic product relationship with Chil during the past year and will augment IR's talent base by adding an experienced digital power design and applications engineering team."

Safeguard owns 1.59 million shares, 28.1% of Advanced BioHealing ahead of its Nasdaq flotation, while venture capital firms Canaan Partners and Wheatley Partners own 40.7% and 14.7%, respectively.

Newswire Bloomberg said Oak's $500m initial public offering could come by the summer and was backed by computer group Lenovo's corporate venturing unit Legend Capital and Japanese media group Softbank as well as venture capital firms Technology Crossover Ventures, Accel Partners, and Doll Capital Management.

Divergence had raised about $20m from venture capital firms Cultivian Ventures (formerly known as Midpoint Food and Ag Fund) and Prolog Ventures, which has a focus on corporate venturing.

Calistoga Pharmaceuticals worth up to $600m after less than $100m of backing from a consortium including Amgen Ventures.

Newswire Bloomberg said HomeAway's flotation would be for up to $300m and managed by investment banks Morgan Stanley, Deutsche Bank, JPMorgan Chase and Goldman Sachs.

SolarCity, a US-based provider of solar energy services, has acquired peer GroSolar's residential services division from a consortium including Allco Financial Group, a financial services business in liquidation.

In August, Pandora had been reportedly about to raise $100m from private equity firm Elevation Partners, according to news provider TechCrunch, but instead has picked investment banks Morgan Stanley and JP Morgan to plan its initial public offering, according to its regulatory filing.