After-hours buzz: Amgen, Aflac, Symantec & More

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

Amgen - The biopharmaceutical company posted earnings of $1.89 a share on revenue of $4.68 billion, beating projections for $1.74 a share on sales of $4.49 billion. In addition, the company said it expects full-year revenues at the upper end of its $17.8 billion to $18.2 billion range. Shares rose in extended-hours trading.

(Read More: S&P ekes out gain, Nasdaq sets fresh 12-year high)

Aflac - The insurance company posted earnings of $1.62 a share, excluding one-time items, on sales of $6.04 billion, topping expectations for $1.51 a share on revenue of $5.83 billion. But the company handed in current-quarter guidance that was slightly below forecasts. Shares were largely unchanged in extended-hours trading.

Symantec - The computer security software company posted earnings of 44 cents a share, excluding one-time items, on sales of $1.71 billion, exceeding Wall Street expectations for 36 cents a share on sales of $1.64 billion.

Take Two Interactive - The videogame publisher reported a loss of 54 cents a share on revenue of $144 million. Analysts expected the company to post a loss of 57 cents a share on sales of $125 million. Shares rose in extended-hours trading.

Fortinet - The network security appliances company posted earnings of 10 cents a share, excluding one-time items, in line with expectations, while revenue edged past forecasts at $147 million, versus $143 million. Shares rose in extended-hours trading.

Riverbed Technologies - The networking hardware company posted earnings of 22 cents a share, matching Wall Street estimates, while revenue fell slightly short at $255 million, versus expectations for $258 million. In addition, the company handed in current-quarter revenue guidance that fell short of estimates, sending shares sharply lower in extended-hours trading.

Jive Software - The social business software provider posted a narrower-than-expected loss, while revenue was in line with expectations at $35 million. But the company handed in disappointing current-quarter and full-year outlooks, sending shares sharply lower in extended-hours trading.

Questcor - The pharmaceutical company posted earnings of $1.35 a share, ex-items, on revenue of $196 million, easily beating forecasts for $1.07 a share on sales of $170 million. Shares spiked higher in extended-hours trading.

Buffalo Wild Wings - The restaurant chain posted earnings of 88 cents a share on sales of $305 million, topping expectations for 79 cents a share on revenue of $304 million. Shares declined in extended-hours trading.

Genworth Financial - The financial services company posted earnings of 27 cents a share, ex-items on sales of $2.37 billion, missing expectations for 29 cents a share on revenue of $2.44 billion. Shares declined in extended-hours trading.

CBOE Holdings - The options exchange hiked up its quarterly dividend to 18 cents a share from 15 cents a share. Shares were largely unchanged in extended-hours trading.

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

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