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

JDS Uniphase - The tech company posted earnings of 15 cents a share on revenue of $439 million, easily topping estimates for 12 cents a share on revenue of $423 million. Shares jumped in extended-hours trading. (Click here for after-hours quote.)

Bob Evans - The restaurant chain posted earnings of 58 cents a share, slightly missing expectations for 60 a share. Meanwhile, the company raised its quarterly dividend and handed in a full-year 2013 earnings guidance that were better than expectations. Still, shares edged higher in extended-hours trading. (Click here for after-hours quote.)

Warren Buffet's Berkshire Hathaway took new stakes in Phillips 66 and National Oilwell Varco, while increasing positions in Viacom and Liberty Media, according to its latest 13-F filing. Meanwhile, the company reduced its shares in Visa , Johnson & Johnson , UPS , CVS Caremark and General Electric , while dissolving its positions in Intel . (Read More: Buffett's Berkshire Slashes Stock Holdings )

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