Investors are watching closely central bank actions after chatter that the authorities were tolerating a stronger currency to win concessions from the U.S.

Taiwan’s central bank has denied speculation that the U.S. asked the island to lift the value of the Taiwan dollar, convening an emergency meeting to urge calm after the currency resumed a blistering rally on Monday.

Oil prices fell on Monday after oil-producing group OPEC+ agreed to accelerate oil production increases, while Taiwan's dollar surged to almost three-year highs at the start of a central bank-packed week for world markets.