Companies raising guidance, but warnings in retail By: CNBC.com News October 28, 2014 at 10:54 AM EDT A number of companies are improving their outlooks for the future, but the retail sector remains cause for concern amid a shift in consumer habits. Read More >> Related Stocks: AT&T Inc Apple Atlantic Power Corp Coach Cummins J C Penney Company Inc Kohl's Corp Martin Marietta Materials Michael Kors Holdings Parker-Hannifin Sherwin-Williams Verizon Communications Whirlpool Corp