Check out which companies are making headlines after the bell Wednesday:
Five Below - The teen retailer beat second-quarter earnings estimates by a penny, but shares fell more than 6 percent after it issued a disappointing third-quarter outlook.
JDS Uniphase - The telecom equipment maker rallied as much as 14 percent after it announced plans to split the company into two independent and publicly traded companies. It expects the deal to close by the third quarter of 2015.
T-Mobile - Shares were higher after the telecom provider announced it added a record 2.75 million gross users in August. It also said it plans to launch more than 100 new smartphones with the capability to text and make phone calls via Wi-Fi and without a connection to the company's network.
Restoration Hardware - Shares dropped after the company handed in mixed second-quarter results and forecast full-year revenue that trailed Street estimates.
Twitter - Shares fell around 2 percent after the social media giant said it would offer $1.3 billion in convertible bonds—its first debt offering as a public company.
Yum - The parent company of Taco Bell and KFC will raise its quarterly dividend. Shares edged lower after the announcement.
—By CNBC's Karma Allen
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