Early on Monday, as investors anticipated an interest rate reduction in September, oil prices increased.
U.S. West Texas Intermediate oil futures increased 42 cents, or 0.52 percent, to $80.55, while Brent crude prices up 48 cents, or 0.57 percent, to $83.10 a barrel.
Investors anticipate that the U.S. Federal Reserve will maintain interest rates during its July 30-31 Federal Open Market Committee meeting, although they will be watching for any signs of a reduction later in the year.