Check out which companies are making headlines after the bell Monday:
Lululemon - The yoga apparel maker said it expects same-store sales to grow "in the high single digits" and raised its fourth-quarter earnings guidance to 74 cents a share, in line with Wall Street estimates. But the company said it expects to report sales of between $475 million and $480 million, missing current expectations for $489 million. Shares tumbled in extended-hours trading.
(Read More: Stocks End Flat; Apple Near $500, Dell Soars)
Dell - The company continued to edge higher in extended-hours trading after surging nearly 13 percent in the regular trading session amid market buzz that the computer hardware maker is in talks with private-equity firms over a potential buyout.
JPMorgan - The investment banking giant has been ordered to take steps to correct poor risk management that led to its trading loss last year of more than $6 billion. Shares dipped in extended-hours trading.