After-hours buzz: Yum, Keurig, Under Armour & more

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

New York Stock Exchange NYSE
Scott Mlyn | CNBC

Yum Brands - The restaurant operator's stock rose more than 3 percent after it reported fourth-quarter earnings of 61 cents per share on revenue of $4 billion, compared to forecasts for 66 cents per share on $3.97 billion in revenue, as same-store-sales at its KFC and Taco Bell locations increased more than expected.

Keurig Green Mountain - The stock fell as much as 10 percent after the coffee producer missed first-quarter earnings and revenue expectations and forecast weak full-year 2015 revenue growth. Shares were last down about 6 percent in extended trading.

Glu Mobile - Shares of the mobile gaming company jumped 10 percent after it announced a new free-to-play game inspired by pop singer Katy Perry. The company also handed in earnings of 11 cents per share, surging past Street forecasts of 2 cents per share.

21st Century Fox - The media conglomerate beat earnings expectations and said it would raise its quarterly dividend by 20 percent. The stock edged higher after the announcement.

Under Armour - The athletic apparel maker topped earnings estimates by a penny, sending the stock up about 3 percent.

Allstate - The auto and home insurance provided issued a $3 billion stock buyback and boosted its dividend by 7 percent. The stock fell about 3 percent in after-hours trading.

Tableau Software - Shares of the computer products maker surged more than 19 percent after it easily beat Wall Street's earnings and revenue projections.

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