StartX, the accelerator of Stanford University, announces new wave of graduate startups and other info about recent operations.

Energy efficiency motivator Opower is reported to have filed for an IPO.

Queen Mary University of London spin-out Actual Experience is admitted to Aim.

Loughborough spin-out Intelligent Energy could be heading for its initial public offering.

Australian National University and University of New South Wales joint venture Lithicon AS sells for A$76m.

Circassia, a biotech spin-out of Imperial College London developing cat and other allergy treatments, announces plans for $285m initial public offering.

Zinwave, a wi-fi solutions spin-out from Cambridge University, is acquired by US manufacturing firm McWane.

Mobile gaming firm and Oxford spin-out NaturalMotion acquired by gaming platform Zynga for $527m.

Care.com, a USAA-backed marketplace for housekeeping and care services, raised $91m in its IPO, with a capitalisation of $723m.