The housing market's recovery helped Home Depot report higher quarterly sales and earnings on Tuesday.
Department-store retailer JC Penney on Thursday reported a quarterly loss and revenue that missed expectations.
Dell reported earnings that fell far shy of market forecasts but revenue came in better than expected. Shares were little changed after-hours.
Wal-Mart profit missed Street expectations, with sales down 1.4 percent at its Walmart U.S. stores open at least a year.