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Comcast Corp.

Comcast stock jumps 4.7 percent

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The largest US cable company’s stock climbed the most since 2010 after quarterly profit rose 26 percent to $1.29 billion, or 47 cents a share, more than analysts had estimated, and video-customer losses narrowed for the fifth straight period. Shares of the Philadelphia company have added 20 percent this year. Comcast also authorized a $6.5 billion stock buyback and increased its annual dividend 44 percent.

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