Oil companies shares up at 10 a.m.

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

BP PLC rose $.25 or .6 percent, to $43.14.

Chevron rose $1.83 or 1.7 percent, to $110.94.

ConocoPhillips rose $1.13 or 1.7 percent, to $68.82.

Exxon Mobil Corp. rose $.99 or 1.1 percent, to $87.92.

Marathon Oil Corp. rose $.65 or 2.1 percent, to $31.17.