BUZZ-Comcast jumps on plan to spin off NBCUniversal, Sky

Comcast Corporation Class A

Comcast Corporation Class A

CMCSA

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** Shares of media and telecommunications company Comcast CMCSA.O rise 20.9% to $28 premarket

** Co plans to separate NBCUniversal and Sky into an independent publicly traded company through a tax-free spin-off

** Comcast shareholders will own shares in both companies after the separation

** Spin-off is expected to be completed in about one year

** Mike Cavanagh will become CEO of NBCUniversal, while former Comcast CFO Michael Angelakis will become Comcast CEO

** Up to last close, the stock had fallen about 17.3% YTD