Introduction

The Central Bank of Nigeria (CBN) concluded its September 2026 Open Market Operations with a total allotment of N12.823 trillion, reflecting strong investor participation despite a declining rate environment. The apex bank absorbed significantly more than the N3.9 trillion offered, underscoring persistent demand for short-dated government instruments.

What Happened

Across four weekly OMO sessions held on September 1, 8, 16, and 24, the CBN accepted a total of N12.823 trillion from cumulative bids reaching N20.58 trillion. Demand consistently outstripped supply, with subscription-to-offer ratios ranging from 3.03 times on September 16 to 6.38 times on September 24. The first auction on September 1 saw N2.880 trillion allotted against N1 trillion offered, while the final session on September 24 recorded a 6.38:1 bid-to-cover ratio, allotting N2.255 trillion from N900 billion on the table.

  • September 1: N2.880 trillion allotted against N1 trillion offered, 5.50x subscription ratio.
  • September 8: N4.397 trillion allotted against N1 trillion offered.
  • September 16: N2.255 trillion allotted against N1 trillion offered, 3.03x subscription ratio.
  • September 24: N2.255 trillion allotted from N900 billion offered, 6.38x subscription ratio.

Why This Matters

OMO stop rates declined 170 basis points over the month, falling from 18.99% at the start of September to 17.29% by the final auction. The most significant drop coincided with the Monetary Policy Committee's 350-basis-point cut to the benchmark rate to 23% on September 22, suggesting the CBN is leveraging open market operations to manage liquidity as policy eases. Despite lower yields, subscription levels remained robust, hitting a year-to-date high of N20.58 trillion, indicating that investors continue to seek risk-free government securities even as rates soften.

Key Takeaways

  • Total allotments reached N12.823 trillion, representing roughly 3.29 times the total N3.9 trillion offered across the four auctions.
  • Investor demand peaked at a 6.38:1 ratio on September 24, with N5.741 trillion in bids against N900 billion offered.
  • The 170-basis-point rate decline was concentrated in the final week, driven by the MPC's aggressive easing.
  • Cumulative OMO and Treasury Bill mop-ups in September totaled N20.96 trillion, reinforcing the CBN's dominant role in sterilizing system liquidity.
  • September's OMO subscriptions rose from N18.72 trillion in August, aided by wider access for individuals, companies, and non-bank financial institutions.
  • Outlook: With rates trending lower and demand still running several multiples above offers, upcoming auctions will test whether the softer rate environment moderates investor appetite.

Conclusion

The September 2026 OMO auctions highlight the CBN's continued effectiveness in absorbing excess liquidity through market-driven mechanisms, even as policy rates decline. Investors maintained strong demand for short-dated government instruments, suggesting that lower yields have not yet dampened appetite. Stakeholders should monitor future auction results to gauge how the central bank balances rate direction with subscription trends in the evolving monetary policy cycle.