Shares of some top utilities companies are mixed at 10 a.m.:

American Electric Power Co. fell $.16 or .3 percent, to $52.84.

Consolidated Edison Inc. Holding Co. fell $.07 or .1 percent, to $56.72.

Dominion Resources Inc. fell $.38 or .6 percent, to $68.59.

Duke Energy Corp. fell $.04 or .1 percent, to $73.01.

Exelon rose $.27 or .9 percent, to $31.28.

PG&E fell $.13 or .3 percent, to $45.57.

Southern Co. fell $.08 or .2 percent, to $43.77.