Check out which companies are making headlines after the bell Wednesday:

Apple - The iPhone maker posted earnings of $13.81 a share on revenue of $54.51 billion. Analysts expected the company to post earnings of $13.47 a share on revenue of $54.73 billion. Shares tumbled in extended-hours trading. The tech giant's stock has plunged nearly 30 percent from its all-time high of $705 last September.