Check out the companies making headlines after the bell Wednesday:
Macy's stock whipsawed after the bell, dipping sharply before making a steep recovery. The company reported November and December comparable sales that fell 5.2 percent and cut its fourth-quarter and 2015 earnings-per-share guidance. Macy's CEO Terry Lundgren blamed unseasonably warm weather for weak sales. The retail giant also announced restructuring measures to be implemented early this year, including job cuts and store closings.
Shares of competing retailer Nordstrom rose in after-hours trading. On Tuesday, Citi downgraded its shares to "neutral" from buy," saying Nordstrom's best-in-class positioning wouldn't be able to bear the challenges department stores are currently facing.
Netflix shares continued to edge up after rallying nearly 10 percent in the regular session. The streaming platform celebrated its launch of service in 130 new countries on Wednesday.
United Airlines announced that its president and CEO, Oscar Munoz, underwent heart transplant surgery earlier on Wednesday. Munoz suffered a heart attack in October and is expected to return to his position by the end of the first quarter or the beginning of the second quarter. Shares of United Continental Holdings were down after the bell.
Intel stock inched upward in extended trading. The technology company had a presence at the Consumer Electronics Show in Las Vegas, showcasing futuristic devices like personal-assistant robots and announcing collaborations with ESPN, New Balance, and Oakley this week. Earlier in the day, Intel CEO Brian Krzanich told CNBC that 2016 will look a lot like 2015 for the company.
Shares of DaVita Healthcare Partners fell in extended-hours trading. The company had a less than stellar year, dropping more than 7 percent over the last 12 months.
— CNBC's Krystina Gustafson, Anita Balakrishnan, and Jacob Pramuk contributed to this report.