Shares of some top oil companies are up at 10 a.m.:

BP PLC rose $.23 or .4 percent, to $52.98.

Chevron rose $.49 or .4 percent, to $131.04.

ConocoPhillips rose $.48 or .6 percent, to $86.21.

Exxon Mobil Corp. rose $.60 or .6 percent, to $101.28.

Marathon Oil Corp. rose $.27 or .7 percent, to $40.19.