CBN’s OMO Operations Withdraw N6.62tn from Banking System in September

The Central Bank of Nigeria (CBN) removed a net N6.62 trillion of liquidity from the financial system in September after conducting Open Market Operations (OMO), central bank auction and repayment figures show.

According to analyses of the month’s OMO activity, the CBN sold about N17.51 trillion in OMO bills during September while repaying roughly N10.89 trillion in maturing instruments. The difference between sales and repayments resulted in the stated net withdrawal for the month.

How the operations were conducted

Leadership reported that the bulk of the OMO sales were carried out across five separate auctions held during the month. Nairametrics and Punch published the aggregate sales and repayment totals cited above. The three outlets’ figures for total sales, repayments and the net outcome are consistent.

Why it matters

By offering more OMO securities than it redeemed, the central bank reduced the amount of cash circulating in the banking system by the net N6.62 trillion figure. Central banks typically use such operations to influence short-term liquidity conditions, and a sizeable net sale like this one can tighten the funds available to banks for lending and interbank activity.

Context and recent trend

The CBN’s use of OMO bills is one of its primary tools for managing liquidity. The September activity—large in both sales and repayments—reflects an active engagement with money markets over the month. Punch focused on the scale of repayments returned to the system, while Nairametrics highlighted both the total sold and repaid and computed the net impact.

Market impact and what to watch next

The immediate effect of a substantial net OMO sale is to withdraw reserves from commercial banks, which can influence short-term interest rates and liquidity premiums in the interbank market. Observers will likely watch subsequent auctions, bank reserve levels and central bank communications for signals about the direction of monetary policy and future liquidity management.

Sources and limits

The totals used in this report come from the three outlets’ reporting on CBN auction and repayment data. Leadership specified the auctions were conducted across five events; that detail comes from its analysis. Where individual outlets provided unique details, those points are attributed accordingly.

The CBN has not been quoted directly in these reports as part of the sources used here. Further official releases from the central bank could provide additional details on the rationale and expected duration of the current OMO stance.