The dollar has tumbled in the past fortnight from a 20-year high as signs of inflation easing in the US fuel speculation that the Federal Reserve will soon slow down its rate rises.

The greenback has fallen more than 4 per cent against a basket of six peers so far in November, leaving it on track for the biggest monthly fall since September 2010, according to Refinitiv data. It is still up about 11 per cent for the year to date.

This month’s fall comes as investors scrutinise early indications that US inflation may finally be easing, potentially paving the way for the Fed to reduce the speed at which it has been boosting borrowing costs. Some data, such as those on the housing and manufacturing sectors, have also suggested the broader economy is facing rising headwinds, another deterrent to Fed monetary tightening.