Check out the companies making headlines after the bell Thursday:
Chipmaker Micron missed on the top and bottom lines when reporting Thursday afternoon. Micron also said it expects fourth-quarter sales of between $3.45 billion and $3.7 billion, well below FactSet estimates of $4.16 billion. The stock tumbled 8 percent to trade at its lowest level in more than a year.
Nike shares jumped about 3 percent after the footwear and clothing retailer reported fourth-quarter earnings of 98 cents a share on $7.78 billion in revenue, blowing past forecasts for 83 cents a share on sales of $7.69 billion. Nike noted that global futures orders rose 2 percent during the quarter.
Valeant Pharmaceuticals approached animal-health firm Zoetis about a potential buyout, Dow Jones reported, citing sources. Valeant shares were flat after hours, while Zoetis shares rose about 3 percent.
Synnex plunged 10 percent after the tech firm said second-quarter sales declined nearly 6 percent from a year ago. At the same time, adjusted income rose by about a similar margin.
Health-care benefits provider Aetna climbed after hours on an earlier report that it was closing in on a deal to acquire insurance provider Humana. Bloomberg first reported the news. Aetna shares gained about 5 percent in extended trading, while Humana rose about 1 percent.