Murphy Oil Corp. says it plans to pump more oil out of the ground as a rally in crude prices helps it recover from a tough third quarter.

Stocks tumbled Friday, giving back all of the gains from the prior session, as worries about the recovery escalated after a pair of reports on the consumer and as the dollar rallied. The Dow shed 250 points, or 2.5 percent, but finished flat for the month.

Among the earnings stories for Friday, Oct. 30, from AP Financial News:

Stocks tumbled Friday, giving back all of the gains from the prior session, as worries about the recovery escalated after a pair of reports on the consumer.

Big movements in the price of oil can have significant effects in the general economy, and although the commodity is off its all-time highs, countries with the most oil within their borders are set for big profits as demand for crude continues to rise. With much of the world's existing reserves found in the Middle East, Gulf of Mexico and a few other locations around the globe, individual countries benefit incredibly from their surprisingly high concentrations of oil. With the most recent data from the Energy Information Administration, here are the countries with the biggest proven oil reserves. Click ahead for the list!

Chevron says it pushed its way through a weak third quarter by pumping more oil out of the ground as prices recover from a severe plunge earlier in the year.

Stocks opened lower Friday after reports showed consumer sentiment and spending have declined.

Third-quarter net profit for the second largest US oil company fell to $3.83 billion, or $1.92 per share, from $7.89 billion, or $3.85 per share, in the same quarter a year before

Chevron said Friday it pumped its way through a weak third quarter, producing more oil as prices recovered from a severe plunge earlier in the year.

By Matt Daily and Braden Reddall

Futures indicated a lower open for Wall Street on Friday, the last trading day of October, after the Dow experienced its best day in 3 months Thursday after GDP data showed the world's biggest economy exited recession in the third quarter.

Oil prices fell nearly 4 percent Friday, pressured by bearish economic data that dented confidence about a potential recovery in energy demand.

What follows is a roundup of corporate earnings reports for Friday, Oct. 30.

Oil companies have begun to pump more petroleum and bring in more profits as they recover from an otherwise miserable year. None of the world's biggest producers, however, see a quick return to boom times of last year.

A man who made clandestine video recordings used to discredit Ecuador in a $27 billion oil contamination lawsuit is a convicted felon with a history of legal troubles, The Associated Press has learned.