Insights 
VT 
The People’s Bank of China (PBOC) sets the daily midpoint of the yuan (renminbi) as part of a managed floating exchange rate system. This allows the yuan to fluctuate within a specified range of +/- 2% around the midpoint. The process involves considering market supply and demand, economic indicators, and international currency fluctuations when determining the daily midpoint against a basket of currencies, primarily the US dollar.
Daily Reference Rate
Each day, the PBOC establishes a reference rate that serves as a benchmark for yuan trading. The trading band permits the yuan to appreciate or depreciate by up to 2% from this midpoint within a trading day. The PBOC can modify this range in response to shifting economic conditions and policy objectives.
If the yuan’s value nears the band limits or shows excessive volatility, the PBOC may take steps in the forex market to maintain stability. This involves buying or selling the yuan to limit fluctuations and ensure a steady and incremental adjustment. The reference rate and the band system are tools that help the bank guide the yuan’s value while maintaining economic balance.
With the People’s Bank of China expected to guide the yuan weaker, we see this as a signal of managed depreciation. This move comes as China’s export growth for August 2025 was a modest 1.2%, missing forecasts and suggesting a need for a more competitive currency. The central bank is not letting the yuan fall freely, but is allowing a gradual slide to support the economy.
For derivative traders, this controlled pace suggests that implied volatility in USD/CNY will likely remain suppressed. This environment is favorable for selling options to collect premium, particularly out-of-the-money calls on the pair. The PBOC’s presence acts as a cap, making a sudden, sharp break above the managed range a low-probability event in the near term.
The broader context supports a weaker yuan, as the US Federal Reserve just last week signaled its intention to hold interest rates at 5.0% to combat persistent inflation. This wide interest rate differential between the US and China continues to favor capital flows into the dollar. Therefore, the path of least resistance for the USD/CNY pair is upward, even if the pace is slow.
Historical Dynamics
We saw a similar dynamic play out back in 2023 when the pair trended higher past the 7.30 level. During that period, the PBOC also used strong daily fixings to lean against the pace of depreciation rather than fight the overall trend. History suggests the current strategy is about smoothing the ride, not changing the destination.
In the coming weeks, we will be closely watching China’s industrial production and retail sales data for further clues on the economy’s health. Any significant downside surprise in these numbers could prompt authorities to guide the yuan even weaker. The daily fixing will remain the most critical data point, as any large deviation from estimates will signal a potential shift in policy.
