Traders work the floor at the NYSE in New York.

Shares of Broadcom rose 1.9% after news that the chipmaker had entered into a two-year supplier deal with Apple. Under the agreement, Broadcom will provide radio-frequency, front-end components and modules for a variety of Apple products, including smartphones, according to a securities filing.

Shares of Shutterfly fell 0.7% during extended trading after the digital-imaging company announced a deal with Apollo Global Management to take the company private. Shutterfly was up 2.7% on the day before being halted prior to the announcement. Apollo Funds will pay $51 per share in cash for Shutterfly.

Shares of social-gaming company Zynga fell 1.6% after the company proposed a $600 million private debt offering. The debt will be convertible into cash, Zynga common stock or a combination of the two.