The People’s Bank of China (PBOC) sets a daily midpoint for the yuan against currencies, mainly the US dollar. This midpoint guides the yuan’s trading within a “band” that allows for a 2% fluctuation. Daily, the midpoint reflects factors like market demand and global currency trends.
The PBOC employs a managed floating exchange rate, permitting the yuan to shift within a +/- 2% trading band around the midpoint. This ensures the yuan’s value can adjust within the day but remains stable unless economic conditions dictate a band change.
PBOCs Intervention in the Forex Market
In cases where the yuan nears the band’s edge or market volatility is high, the PBOC may intervene. By buying or selling the yuan, the central bank stabilises its value. This intervention ensures a smooth adjustment of the yuan’s value in the foreign exchange market.
With the People’s Bank of China expected to set the USD/CNY rate at 7.1709, we see this as a continued signal of stabilization. This level indicates authorities are managing the currency carefully, preventing it from weakening too sharply as it did at times back in 2023. For traders, this implies that the PBOC remains committed to leaning against significant depreciation pressure.
This policy makes sense given the latest economic figures. Recent data from earlier this week showed China’s exports fell by 1.5% in July 2025, highlighting ongoing softness in external demand. A heavily managed currency prevents this weakness from turning into a disorderly capital flight, a pattern of intervention we have seen consistently throughout 2025.
The global environment is also providing some support for this stance. In the United States, the July 2025 core inflation reading came in at 2.8%, slightly below expectations and reinforcing the market view that the Federal Reserve is on track to cut rates before the end of the year. A less aggressive Fed reduces upward pressure on the US dollar, making the PBOC’s job easier.
Strategies for Traders
In the coming weeks, this environment suggests that selling volatility in USD/CNY options could be a prudent strategy. The PBOC’s clear intent to manage the exchange rate within a tight band is likely to suppress any large, unexpected moves. Therefore, derivative strategies that profit from low volatility, such as short strangles or straddles, appear attractive.
We should watch the daily fixing versus the market’s estimates as a key tell. During periods of stress in 2023 and 2024, the PBOC consistently set the reference rate significantly stronger than anticipated to guide sentiment. Continuing this pattern would reinforce the view that the 7.15-7.25 range will be firmly defended for the remainder of the quarter.
