Oil holds onto gains as investors bet on tighter supply

Oil prices edged down slightly on Monday, holding on to most of their recent gains amid expectations of tighter supply from OPEC+ cuts, attacks on Russian refineries and upbeat Chinese manufacturing data.

Brent crude fell 17 cents, or 0.2%, to $86.83 a barrel by 0017 GMT after rising 2.4% last week. U.S. West Texas Intermediate crude was at $83.06 a barrel, down 11 cents, or 0.1%, following a 3.2% gain last week.