The yuan has been set at its weakest against the USD for the year today by the People’s Bank of China

The PBOC set the yuan reference rate today at 6.4936

The mid-point for USD/CNY as set by the PBOC during 2015

As I update USD/CNH (CNH is the 'offshore' yuan, which is free to trade without the +/-2% band applied to the CNY) is around 6.5861. The CNH is much weaker than the CNY as expectations are for continuing devaluations of the CNY into the new year.

Chatter is that there was intervention (to buy yuan) overnight when USD/CNH got above 6.6

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Note: Starting January 4 the CNY trading hours will extend until 11.30pm local time (from the current 4.30pm close)

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ps ... an update of the majors while I'm at it: