A giant Red Bird catapult game stands at the entrance to Angry Birds Land, near Tampere, Finland. (Photographer: Juho Kuva/Bloomberg)

Rovio Sinks as First Report Since IPO a `Brutal Disappointment'

(Bloomberg) -- The company behind Angry Birds lost a fifth of its market value on Thursday as investors saw its first set of earnings since an initial public offering just two months ago.

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