NEW YORK (AP) -- Shares of some top big-box retail companies are down at 10 a.m.:
Costco Wholesale Corp. fell $.39 or .3 percent, to $111.70.
Target fell $.17 or .2 percent, to $69.99.
Wal-Mart Stores Inc. unchanged at $75.73.
The Federal Reserve will keep its version of the monetary printing press running a while longer, though Chairman …