Check out the companies making headlines after the bell:
Mondelez International's stock climbed nearly 5 percent in the extended session after the company posted higher-than-expected third quarter earnings.
Shares of Voyager Therapeutics dropped 12 percent after hours. Sanofi said it would end a collaboration with Voyager to develop a Parkinson's disease treatment.
Shares of Allison Transmission rose 3.3 percent after the company's third quarter earnings and revenue surpassed Wall Street analysts' expectations.
Exact Sciences' stock rose 7 percent in the extended trading session after the company raised its revenue guidance for the year and posted profit and revenue above analysts' estimates.