Exxon Mobil quarterly profit down 21 percent
Profit in the fourth quarter totaled $6.57 billion, or $1.56 per share, compared with $8.35 billion, or $1.91 per share in the same quarter a year earlier.
Oil and natural gas production fell 3.8 percent, said the Irving, Texas-based company.
(Reporting by Anna Driver in Houston; Editing by Jeffrey Benkoe)