PBOC's 7-Day Reverse Repo at Zero for Seven Straight Days Does Not Signal a Liquidity Tightening

As of August 19, the People's Bank of China has kept its 7-day reverse repo operation volume at "zero injection" for seven consecutive trading days, drawing broad market attention. Considering the central bank's recent liquidity operations, the trajectory of market interest rates, and the PBOC's regulatory approach, the author argues that consecutive "zero injection" in the 7-day reverse repo does not signal liquidity tightening but rather reflects the PBOC's refined liquidity management in response to changing market supply and demand.

From an operational standpoint, the PBOC's recent open-market operation announcements explicitly stated that the daily 7-day reverse repo volume was set at "zero based on the needs of primary dealers of open-market operations." Therefore, the direct cause of the 7-day reverse repo "zero injection" is weaker demand from primary dealers.

Currently, the 7-day reverse repo uses a fixed-rate, volume-based auction mechanism, and the operation size is not unilaterally preset by the central bank but determined by the actual funding needs of financial institutions. Since mid-August, market interest rates such as DR001 (the overnight pledged repo rate among depository institutions in the interbank market) and DR007 (the 7-day pledged repo rate among depository institutions) have consistently traded below the policy rate, namely the 7-day reverse repo operating rate of 1.4 percent, indicating relatively ample funding in the interbank market. Financial institutions' willingness to borrow 7-day funds from the PBOC has naturally fallen, so "zero injection" is a market outcome driven by the spontaneous rebalancing of supply and demand, not a policy move by the central bank to actively drain liquidity.

It should be noted that "zero injection" of the 7-day reverse repo does not mean open-market operations have come to a complete halt. To offset episodic funding fluctuations from tax-period disturbances and government bond issuance, the PBOC has activated overnight reverse repos to "fill the gap," announcing the operation schedule in advance, capping the daily volume at 600 billion yuan, and flexibly calibrating the size to the actual funding gap to smooth short-term funding volatility. In addition, on August 5 the PBOC conducted a 500 billion yuan three-month outright reverse repo, with a net injection of 200 billion yuan after offsetting maturities; on August 14 it rolled over a six-month outright reverse repo at the same volume.

The flexible use of overnight reverse repos and the stepped-up injection of medium- and long-term liquidity both clearly demonstrate the PBOC's commitment to nurturing liquidity. At the same time, this combination of short- and long-term tools and demand-driven, precision-targeted operations avoids the risk that excess liquidity would breed capital idleness, fully reflecting the central bank's refined approach to liquidity management.

Overall, the market does not need to over-interpret the consecutive "zero injection" of the 7-day reverse repo, nor should it worry about liquidity tightening. Looking ahead, the PBOC will continue to use and adjust monetary policy tools as appropriate, maintain ample liquidity, create a suitable monetary and financial environment for the real economy, and provide solid financial support for the continued recovery and improvement of the macroeconomy.

(Source: Securities Daily)