Check out the companies making headlines after the bell:
Tyson Foods shares jumped 5.4 percent in extended trading after the company boosted its earnings guidance for the fiscal year on strong beef-segment earnings
Amazon shares were little changed in extended trading following revelations that newly acquired subsidiary Whole Foods suffered a limited data breach at taprooms and restaurants in some stores.
Twitter's stock remained flat after hours following news that the company sold more than $270,000 of ads to Russia-linked accounts during the 2016 election. Sen. Mark Warner also voiced his disappointment with Twitter's presentation before lawmakers about possible Russian interference in the election.