NEW YORK (AP) — Stocks that moved substantially or traded heavily Friday on the New York Stock Exchange and the Nasdaq Stock Market:
General Motors Co., down $1.38 to $39.57
The automaker's U.S. sales fell about 6 percent in December as its top-selling pickup truck came under pressure from competition.
Sprint Corp., down 46 cents to $9.94
A Stifel analyst downgraded the wireless carrier's stock rating on doubts it will be able to pull off a takeover of rival T-Mobile.
Rite Aid Corp., up 43 cents to $5.47
The drugstore chain said that sales at stores open at least a year grew nearly 3 percent during the month of December.
WhiteWave Foods Co., up $1.11 to $23.68
The maker of Silk soy milk and Land O Lakes creamers closed its $600 million acquisition of organic food maker Earthbound Farm.
La-Z-Boy Inc., up 79 cents to $30.97
A Raymond James analyst raised his price target on the furniture seller's stock, saying its sales may increase.
Delta Air Lines Inc., up $1.53 to $29.23
A key airline sales measure rose a bigger-than-expected 10 percent in December because Thanksgiving was later than usual last year.
Finisar Corp., up 46 cents to $23.72
A Raymond James analyst upgraded the optic component supplier's shares on possible higher demand for its products by data centers.
Real Goods Solar Inc., up 16 cents to $3.35
The company said that it was working with solar energy company BlueWave Capital to build four solar projects in Massachusetts.