Stocks that moved substantially or traded heavily Friday on the New York Stock Exchange and the Nasdaq Stock Market:
Freeport-McMoRan Inc., up 31 cents to $10.50
Activist investor Carl Icahn took an 8.5 percent stake in the mining company as it cuts costs due to declining copper prices.
Big Lots Inc., up $6.58 to $48.58
The discount retailer's quarterly results beat analysts' estimates and it boosted its full-year earnings outlook.
Sprint Corp., up 12 cents to $5.19
The cellphone company is offering DirectTV customers one free year of service in a move aimed at the satellite TV company's new owner, AT&T.
Regis Corp. down $1.47 to $11.70
The owner of hair salon chains Supercuts and MasterCuts reported a continued decline in quarterly revenue.
GameStop Corp., down $3.71 to $42.49
The video game retailer reported strong second-quarter results but gave a forecast that disappointed Wall Street.
ConocoPhillips, up 95 cents to $46.82
Oil stocks recovered some recently lost ground as the price of crude had a second day of big gains.
Activision Blizzard Inc., up $1.29 to $29.22
The stock of the video game maker, whose games include "World of Warcraft" and "Call of Duty," is being added to the S&P 500 index.
Autodesk Inc., down $2.48 to $47.52
The design software company reported better-than-expected second-quarter earnings, but revenue fell short of forecasts.