China's yuan weakened beyond a psychologically key 6.6 per dollar level for the first time in six months on Wednesday, and though it recouped some of the losses by midday bets are growing for further downside amid an escalating Sino-U.S. trade row.
Reflecting the rising risks to the economic outlook, the People's Bank of China lowered its yuan midpoint for the sixth straight trading day to 6.5569 per dollar, 389 pips or 0.6 percent weaker than the previous fix of 6.5180.
It was the lowest fix since Dec. 25, and the biggest one-day weakening in percentage terms since Jan. 9, 2017, with some analysts suspecting the PBOC prefers to let the currency depreciate modestly.
"The PBOC's preference might be to allow moderate weakening, pulling back if depreciation pressures started intensifying. But that's a difficult balance to strike. The chances of a sizeable depreciation have risen," economists at Capital Economics said in a note.
The spot yuan rate breached 6.6 per dollar level in early trade, after opening at 6.5717 and then moving to a low of 6.6159 at one point, the softest since Dec.19, 2017.
As of midday, the onshore spot was changing hands at 6.5977, 180 pips weaker than the previous late session close and 0.62 percent softer than the midpoint.
Its offshore counterpart was on track for its tenth straight day of losses, 0.04 percent weaker than the onshore spot at 6.6004 per dollar.
Some dollar selling was seen helping the onshore spot yuan move back up to trade firmer than the 6.6 per dollar level at around midday, several traders said.
However, it wasn't clear if state banks were propping up the yuan, they said.
Major state-owned Chinese banks were seen repeatedly selling dollars to support the yuan after a 2015 devaluation that roiled global markets. These dollar-selling interventions dried up last year.