Insights 
VT 
The People’s Bank of China (PBOC) set the daily midpoint for the yuan at 7.1019 against the US dollar. This is lower than the estimated rate of 7.1081. The previous closing rate was 7.1184.
China’s central bank operates a managed floating exchange rate system. This permits the yuan to fluctuate within a band of +/- 2% around the central rate. The PBOC injected 230 billion yuan via 7-day reverse repos at an interest rate of 1.40%.
Net Injection
In terms of net injection, this amounted to 41.7 billion yuan.
The People’s Bank of China has signaled its clear intention to slow the yuan’s depreciation by setting a much stronger-than-expected reference rate. This action suggests that betting on continued, rapid weakening of the currency in the near term is a risky strategy. We see this as a direct message from the authorities to stabilize sentiment.
For derivative traders, this move to defend the yuan will likely suppress implied volatility on USD/CNY options. The central bank’s intervention creates a perceived ceiling on the exchange rate, making it more challenging for the pair to break significantly higher in the coming weeks. This makes selling option premium, particularly on upside calls, an increasingly attractive strategy.
Pressure on the Yuan
This strong fix comes at a critical time, as we’ve watched the onshore yuan weaken over 4% against the dollar so far in 2025. The pressure has been driven by a sluggish recovery in the property sector and an interest rate differential with the US that remains wide, with the Federal Reserve holding rates steady through the summer. The PBOC’s action is a clear countermeasure to these fundamental pressures.
We can look back to the period between mid-2022 and late 2023 for a historical parallel, when the central bank repeatedly used strong daily fixes to defend the 7.30 level. That historical pattern reinforces the credibility of today’s signal and suggests a sustained effort to anchor the currency. Traders should anticipate similar interventions if the yuan comes under renewed pressure.
At the same time, the net liquidity injection shows the PBOC is trying to support the economy without letting the currency slide. This dual mandate means that while the yuan may be supported, the underlying domestic economic weakness that pressures it will persist. This creates a range-bound environment rather than a reversal of the trend.
Given this, we should consider strategies that benefit from a capped upside in the USD/CNY exchange rate over the next month. Selling low-delta call spreads on USD/CNY could be an effective way to capitalize on the PBOC’s defensive stance. This approach allows us to profit from both time decay and the central bank’s efforts to limit yuan weakness.
