Stocks that moved substantially or traded heavily Friday:
Nike Inc., down $1.48 to $63.29
The athletic apparel retailer had a solid quarter but sales in North America remained weak.
Papa John's International Inc., down $2.33 to $56.90
The pizza chain said founder John Schnatter will step down as CEO on Jan. 1.
Ignyta Inc., up $11.30 to $26.85
Swiss drugmaker Roche will buy the cancer drug developer for $27 a share, or $1.79 billion.
Celgene Corp., down $1.55 to $106.33
The company said an experimental lymphoma treatment regimen failed in a late-stage clinical trial.
UnitedHealth Group Inc., down $1.69 to $220
The health insurer said it will buy Empresas Banmédica of South America for $2.8 billion.
Party City Holdco Inc., up $1.75 to $13.95
The party supply company said it will buy back $242 million in stock from private equity firm Advent International.
Overstock.com Inc., down $1.70 to $65.75
The online discount retailer has climbed along with the price of bitcoin, and fell in tandem with it Friday.
AAR Corp., down $3.74 to $40.21
The airplane maintenance company's second-quarter profit and sales fell short of Wall Street estimates.
This content appears as provided to The Globe by the originating wire service. It has not been edited by Globe staff.