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After-Hours Buzz: CMCSA, GE, CLF & More

Check out which companies are making headlines after the bell Tuesday:

Comcast - Comcast announced that it will acquire the 49 percent of NBCUniversal it does not already own from General Electric for $16.7 billion. Comcast also reported earnings of 52 cents a share on revenue of $15.94 billion, missing expectations by a penny, on revenue of $15.94 billion versus estimates for $16 billion. The company also increased its dividend by 20 percent to 78 cents a share on an annualized basis and will repurchase $2 billion in stock in 2013. Shares jumped in extended-hours trading. GE also gained in extended-hours trading.

(Read More: Dow, S&P Close at 5-Year Highs; Apple Falls 2% )

Cliffs Natural Resources - The coal company posted earnings of 62 cents a share, excluding one-time items, topping estimates for 53 cents a share. Revenue matched expectations at $1.54 billion. Meanwhile, the company said it expects its global iron ore sales to be flat year over year at nearly 40 million tons and cut its its dividend rate to 15 cents a share from 62.5 cents a share. Shares declined in extended-hours trading.

Buffalo Wild Wings - The restaurant chain posted earnings of 89 cents a share, missing Wall Street expectations by 7 cents a share. But revenue was better than expected at $304 million, versus estimates for $292 million. Shares slumped in extended-hours trading.

Western Union - The financial services company posted earnings of 40 cents a share on revenue of $1.42 billion, topping expectations for 35 cents a share on sales of $1.40 billion. But the company handed in 2013 earnings guidance that missed Wall Street estimates, sending shares sharply lower in extended-hours trading.

Rackspace - The tech company posted earnings of 21 cents a share, matching Wall Street expectations, while revenue fell slightly short. Shares tumbled in extended-hours trading.

Clearwire - The wireless communications company posted a loss of 29 cents a share on revenue of $311 million, missing expectations for a loss of 27 cents a share on sales of $314 million. Shares slid in extended-hours trading.

Moody's - The ratings agency increased its share repurchase authorization by $1 billion. Shares edged higher in extended-hours trading.

Prudential Financial - The financial services company declared a quarterly cash dividend of 40 cents a share, as expected. Shares were largely unchanged in extended-hours trading.

—By CNBC's JeeYeon Park (Follow JeeYeon on Twitter: @JeeYeonParkCNBC)

Questions? Comments? Email us at marketinsider@cnbc.com

  • Patti Domm

    Patti Domm is CNBC Executive Editor, News, responsible for news coverage of the markets and economy.

  • A CNBC reporter since 1990, Bob Pisani covers Wall Street from the floor of the New York Stock Exchange.

  • CNBC's Senior Personal Finance Correspondent

  • JeeYeon Park is a writer for CNBC.com. Follow her on Twitter: @JeeYeonParkCNBC

  • Rick Santelli joined CNBC Business News as an on-air editor in 1999, reporting live from the floor of the Chicago Board of Trade.

  • Senior Producer at CNBC's Breaking News Desk.