Insights 
VT 
The People’s Bank of China (PBOC) sets the daily midpoint of the yuan, which is vital for currency trading. The system in place is a managed floating exchange rate, permitting the yuan to fluctuate within a 2% range around this midpoint.
Setting The Midpoint
Each morning, the PBOC calculates the midpoint for the yuan against various currencies, especially the US dollar. Factors considered include supply and demand, economic indicators, and international market changes. This midpoint acts as the day’s trading guide.
The yuan is allowed to move within a range set at +/- 2% around the midpoint. The PBOC can alter this range based on the economy and policy aims. If the yuan nears the trading band’s limit or faces excessive volatility, the PBOC might act.
The central bank may intervene by buying or selling the yuan to manage its value. Such actions ensure a controlled adjustment of the currency’s value, maintaining market stability.
With the People’s Bank of China expected to set the USD/CNY midpoint around 7.1021, we are closely watching for any deviation from that consensus. A significantly stronger fix, meaning a lower number, would signal an intensified effort to support the yuan. Conversely, a weaker fix than expected would suggest a tolerance for gradual depreciation.
This action comes as we’ve seen China’s exports for August 2025 fall by 3.2% year-on-year, putting natural downward pressure on the currency. The central bank is using the daily fix to counteract this weakness and prevent rapid outflows. This strong management has kept the exchange rate in a tight range for several weeks.
Impact on Derivative Traders
For derivative traders, this heavy intervention has crushed volatility in the pair. One-month implied volatility for offshore yuan (USD/CNH) is currently hovering near a six-month low of around 4.5%. This makes buying options relatively inexpensive compared to earlier in the year.
Given the low cost, we see opportunities in purchasing long-dated strangles or straddles. This strategy would profit from a significant price move in either direction, which could happen if economic data forces the PBOC to abruptly change its policy. The current stability is unlikely to last forever, creating a classic volatility trade setup.
Looking back, we remember the sharp depreciation we saw in late 2023 when the rate pushed past 7.30, and the central bank is clearly trying to prevent a repeat of that episode. This suggests that while the broader trend may be for a weaker yuan, the PBOC will actively defend key psychological levels. Therefore, selling call options with strikes well above 7.25 could be a viable income-generating strategy for those betting on the effectiveness of the central bank’s control.
The primary risk remains a sudden and aggressive policy shift from the PBOC, which could happen with little warning. We must remain alert to the daily fix and any statements from officials. The current calm provides opportunities, but it is an enforced calm that depends entirely on the central bank’s actions.
