The lifting of containment measures imposed in the Chinese city of Changdu had cheered up the market, suggesting wider reopenings across the Middle Kingdom. However, oil prices weakened slightly on Monday morning, failing to recover from a third straight week of declines.

Investors remain cautious ahead of a series of monetary policy decisions, including Wednesday's decision by the U.S. Federal Reserve (Fed). Thus, shortly after 09:05, the barrel of Brent North Sea for delivery in November gave up 0.54% to 90.857 dollars. On Friday evening it was up 0.56% to 91.35 dollars, but not enough to end the week in the green. As for 159 liters of U.S. West Texas Intermediate (WTI), with maturity in October, they were trading at $ 84.529, down 0.68%, Friday they had remained almost stable.