take a look at pultegroup, ryland and k.b. home-- their shares rose more than 3%. and that's tonight's "market focus." >> susie: oil prices notched higher today, closing above $108 a barrel. that brings us to tonight's "word on the street"-- "oil." dan dicker, senior contributor to thestreet.com, says the big beneficiaries of those higher prices are oil refiners. when i spoke to him a short while ago, he explained why.