The People’s Bank of China, the central bank, sets the daily midpoint of the yuan, also known as renminbi. China uses a managed floating exchange rate system, allowing the yuan to fluctuate within a +/- 2% range around this midpoint.
Today, the USD/CNY reference rate is set at 7.1395, differing from the estimated 7.1774. The previous closing rate was 7.1930. Additionally, the central bank injected 544.8 billion yuan through 7-day reverse repos at a 1.40% rate. With 495.8 billion yuan maturing today, this results in a net injection of 49 billion yuan.
Significant Move By The People’s Bank Of China
We are seeing a forceful signal from the People’s Bank of China today, August 4th, 2025. The midpoint fix at 7.1395 is significantly stronger than market estimates, showing a clear intent to halt the yuan’s recent slide. This move effectively draws a line in the sand against further depreciation.
This action comes after weeks of pressure on the yuan, which saw it approach the 7.20 level against the dollar. We can attribute this pressure to disappointing Chinese export data for July 2025 and a resilient US dollar following slightly higher-than-expected inflation figures from last week. The PBOC is now directly countering these fundamental market forces.
For derivative traders, this strong fix suggests that short-term implied volatility in USD/CNY options is likely overpriced. One-month implied volatility, which had climbed above 5% in late July, should now compress as the central bank signals its commitment to stability. This creates an opportunity to sell yuan volatility, as the probability of a sharp, sudden depreciation has been deliberately reduced.
Currency Strategy And Market Implications
We’ve seen this playbook before, particularly during the extended period of yuan weakness in 2023 and 2024. The PBOC consistently used aggressively strong midpoint fixes to manage market expectations and prevent a self-reinforcing depreciation cycle. History suggests that when they send such a strong signal, they tend to stick with it for a period to restore confidence.
Given this policy stance, outright long USD/CNY positions are now significantly riskier in the coming weeks. A more prudent strategy would involve range-trading structures, such as selling strangles or iron condors. These positions would profit from the expected period of lower volatility and sideways price action.
The simultaneous net liquidity injection of 49 billion yuan is a secondary, supportive measure. It ensures onshore money market rates remain stable without signaling any major shift in broader monetary policy. This reinforces the view that the PBOC’s primary focus for now is currency stability.
