Check out which companies are making headlines after the bell Monday:
Apple - It reported first-quarter earnings of $14.50 a share on revenue of $57.59 billion, versus estimates of of $14.07 per share on sales of $57.46 billion. The company forecast second-quarter revenue of $42 billion to $44 billion, compared with estimates of $46.05 billion. Its shares were off 6 percent in after-hours trading.
Rent-A-Center - The company reported fourth-quarter same-store sales down 1.1 percent, with its shares falling sharply in after-hours trading.
IITT Educational Services - The for-profit education company said it had received from the attorneys general of 12 states subpoenas or investigative demands related to its business practices. Its shares fell more than 4 percent in after-hours trading.
Seagate Technology - The maker of hard-disk drives reported a 13 percent drop in quarterly profit amid declining demand for its product because of decreasing PC sales. Its shares were off 6.8 percent in after-hours trading.
—By CNBC's Kate Gibson
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