Digital game developer Zynga saw its stock dip after reporting a shrinking audience due to lack of new releases. The maker of games like "Words with Friends" and "Farmville" is transitioning toward more mobile traffic as the Web business continues to decline, founder Mark Pincus said, in a statement.
Expedia shares moved higher in extended trade after the travel planning technology company reported year-over-year increases in bookings and revenue in the December quarter. Shares of competitors Priceline and TripAdvisor also rose after the news.
Shares of generic drugmaker Mylan dropped as it announced plans to acquire international specialty pharma company Meda. In addition to the merger, which is expected to produce synergies of $350 million, the company reported diluted earnings of $4.30 per share in the latest quarter.
And quarterly earnings boosted shares of phone, Internet and cable provider CenturyLink, which slashed costs and added TV customers, even as high-speed Internet users declined.
— CNBC's Jacob Pramuk, Everett Rosenfeld and Krysia Lenzo contributed to this report.