NEW YORK (AP) -- Stocks that moved substantially or traded heavily Wednesday on the New York Stock Exchange and the Nasdaq Stock Market:
J.C. Penney Co. Inc., down 45 cents to $9.66
The retailer reported a jump in a key sales metric for November but analysts note the numbers are still far below levels of two years ago.
Marathon Petroleum Corp., down $3.73 to $83.26
The refiner outlined aggressive spending plans for its retail wing, trying to offset its always volatile refining segment.
Deere & Co., up $2.67 to $85.38
The heavy-equipment manufacturer's board of directors approved an $8 billion expansion of its share buyback program.
Teradata Corp., down $2.82 to $42.53
Morgan Stanley downgraded the data-storage and hardware company, citing competition from upstart Hadoop.
Express Inc., down $5.67 to $19
The clothing company cut its outlook for the year after falling short of expectations for the third quarter.
ChemoCentryx Inc., up 14 cents to $5.16
The drugmaker said it's encouraged by initial results from a mid-stage study of a potential autoimmune disease treatment.
OmniVision Technologies Inc., down 47 cents to $15.52
A disappointing yearly outlook overshadowed a strong second quarter in which the image sensor company's profits doubled.
Western Digital Corp., up $2.04 to $77.57
The hard drive maker announced a new technology partnership with Baidu, which is China's biggest search engine operator.