Big-box Retail companies shares mixed at the close of trading

Shares of some top big-box retail companies were mixed at the close of trading:

Costco Wholesale Corp. fell $.83 or .6 percent, to $146.65.

Target fell $.25 or .3 percent, to $76.90.

Wal-Mart Stores Inc. rose $.23 or .3 percent, to $83.80.