China's central bank has rolled out a nuanced liquidity management strategy, aiming to fine-tune market conditions by simultaneously moderating medium-term funding while boosting short-term injections. This combination of actions has captured significant market attention, signaling a shift in operational priorities.

On August 24, the People's Bank of China (PBOC) issued two key notices outlining changes to its open market operations. The first involves a net reduction in the Medium-term Lending Facility (MLF), marking the first such contraction in four months. The second pre-announces a series of overnight reverse repurchase (repo) operations scheduled for the end of the month, each capped at 600 billion yuan. Market analysts view this not as a signal of monetary tightening, but as a targeted response to short-term structural pressures, including government bond settlements and month-end assessments.

MLF Reduction, Overnight Repo Intensification

The PBOC announced on August 24 that it would conduct a 500 billion yuan one-year MLF operation on August 25 through a fixed-quantity, interest-rate-bid, and multi-price auction process. With 600 billion yuan in MLF maturing this month, this operation represents a net contraction of 100 billion yuan, a reversal from the previous month's increase of the same amount.

Simultaneously, the central bank declared it would carry out overnight reverse repo operations from August 27 to September 1. These operations will employ a fixed-rate, quantity-bidding model, with a daily cap set at 600 billion yuan. This follows eight consecutive trading days with zero injections via the 7-day reverse repo. The 7-day tool resumed on August 21 with a 95 billion yuan injection, followed by a 340 billion yuan injection on August 24 to fully satisfy primary dealer demand.

According to Dong Ximiao, Chief Economist at Merchants Union Consumer Finance, the banking system's overall liquidity is currently ample. The prior period of zero 7-day repo injections indicated low demand for active borrowing by institutions. Coupled with the 1 trillion yuan injection of 6-month outright reverse repos in mid-August, key interbank rates like DR001 and DR007 have remained below the 1.4% policy rate. Therefore, the PBOC doesn't need to inject additional funds through equal MLF rollovers.

However, short-term funding faces dual pressures: the 600 billion yuan MLF maturity and a peak in government bond payments (net payments approaching 800 billion yuan, a weekly high in 2025). These factors, combined with month-end requirements, create notable cross-month funding volatility. Wang Qing, Chief Macro Analyst at Golden Credit Rating, suggests that the central bank's move to conduct overnight repos at this juncture helps manage DR001 volatility and steer it smoothly around the policy rate.

On August 24, money market rates showed mixed movements. The Shanghai Interbank Offered Rate (Shibor) for overnight funds fell 1.5 basis points to 1.4190%, while the 7-day Shibor rose 0.64 basis points to 1.4320%. At the close, the weighted average for DR007 was 1.4339%, DR001 at 1.4229%, and the Shanghai Stock Exchange's GC001 rate at 1.435%.

Zhang Lin, Deputy Director of the FEC Credit Rating Research Institute, notes that DR001 has largely stayed within a 1.35%-1.44% range, stable near the 1.4% policy rate and well within the 25 basis point interest rate corridor. This indicates that short-end rate management is entering a phase of reduced volatility and increased stability.

Continued Evolution Towards Price-Based Monetary Policy

The combination of reduced MLF and increased overnight repos reflects the ongoing transformation of the monetary policy framework. The PBOC's Q2 monetary policy report explicitly calls for gradually increasing the frequency of overnight reverse repo operations to facilitate a shift from quantity-based to price-based regulation.

In August, the pace of overnight repo operations has notably accelerated. Combined with operations on August 3 and from the 14th to 19th, plus the pre-announced month-end operations, the total for the month reaches eight times, a significant increase from July's three and June's two operations. Wang Qing points out this signals the rapid normalization of overnight repos, highlighting the central bank's accelerated push to transform its policy framework and stabilize short-term market rates. This should make DR001 more stable, mitigating the impact of factors like tax payment periods, government bond issuance, policy tool maturities, and month-end assessments.

Dong Ximiao observes that the two announcements reveal two key characteristics of the PBOC's liquidity management: an active 'shortening of duration and lengthening of instruments' in the term structure, and a significant expansion in the scale of short-term tools. The core logic is to 'exchange short-term for long-term with a neutral-to-slightly-contractive total volume.' While overall liquidity remains reasonably ample, the shortened duration and higher frequency of operations increase sensitivity to short-term rate fluctuations. This marks a shift from 'total easing' to 'precise adjustment and optimized terms.'

Wang Qing emphasizes that the market should not interpret the MLF reduction as a tightening signal. It primarily relates to the term structure of financial institutions' funding needs and does not represent liquidity tightening. Looking at the full month's medium-term operations, the two-term outright reverse repo rollover was increased by 200 billion yuan, resulting in a net injection of 100 billion yuan across all medium-term tools for the month. This is the second consecutive month of net injection, though the scale has decreased by 700 billion yuan from the previous month. Zhang Lin also advises the market to focus more on the price signals from the 7-day reverse repo rate and the position of key market rates like DR001.

Looking ahead, the normalization of overnight reverse repos opens up possibilities for tool iteration. Wang Qing analyzes that overnight reverse repos may gradually replace the 7-day reverse repo as the core short-term liquidity adjustment tool. From a longer-term perspective, this also paves the way for the overnight reverse repo rate to potentially supersede the 7-day reverse repo rate as the primary policy interest rate.