The price of a Brent barrel for delivery in September closed at $78.31 dollars yesterday in London, after closing at $76.52 dollars the previous day. Oil also closed higher, with WTI advancing over 2.0 percent in the return of electronic trading during the U.S. holiday on Tuesday, the 4th. Investors followed news about the seminar of the Organization of the Petroleum Exporting Countries and allies (OPEC+), in which the cartel reaffirmed its commitment to support