NEW YORK (AP) — Stocks that moved substantially or traded heavily Thursday on the New York Stock Exchange and the Nasdaq Stock Market:
Best Buy Co. Inc., down $10.74 to $26.83
The electronics retailer posts disappointing sales during the holiday shopping season, raising concerns about its ability to turn around its business.
Nu Skin Enterprises Inc., down $30.43 to $84.80
Chinese regulators say they are investigating the business practices of the company, which sells skin care and nutritional products through a direct-selling model.
CEC Entertainment Inc., up $6.32 to $54.75
The parent company of the Chuck. E. Cheese will be bought by an affiliate of Apollo Global Management for about $950 million.
J.C. Penney Co. Inc., down 11 cents to $6.90
The struggling department store is cutting 2,000 jobs and it will close 33 stores as it tries to return to profitability.
CSX Corp., down $1.99 to $27.24
The railroad warned that it will be difficult to reach its profit targets for double-digit growth because of weak demand for coal.
Sarepta Therapeutics Inc., up $8.02 to $28
The drugmaker reported positive results from a mid-stage study of its potential treatment for Duchenne muscular dystrophy.
SolarCity Corp., up $8.30 to $76.80
Deutsche Bank initiated coverage of the solar installer with a "Buy" rating, citing its growth potential.
Rentrak Corp., up $10.09 to $48.07
CBS became the first major broadcast network to subscribe to the media demographic company's advanced ratings service.
Illumina Inc., up $4.14 to $125.26
The genetic equipment maker will help develop a test that will identify patients who might benefit from Amgen's colon cancer drug.