The Central Bank of Nigeria (CBN) conducted one of its most aggressive single-session Open Market Operations (OMO) auctions on May 21, 2026, mopping up a combined N3.692 trillion across two instruments in a dramatic escalation of its liquidity tightening campaign.
This is according to OMO auction results published by the apex bank and analysed by Naijaonpoint.
The apex bank’s financial data show that the combined offer of N600 billion across a 33-day, and a 138-day bill was overwhelmed by investor demand as total subscriptions hit N3.692 trillion, more than six times the amount on offer.
The outcome marks a sharp departure from the May 12, 2026, auction, where the CBN exercised significant restraint, accepting only N116 billion of N872 billion in total subscriptions across a 35-day and a 70-day bill.
The May 21 auction results reveal a financial system awash with investible funds chasing the CBN’s high-yield paper.
Opening balances in the banking system also fell from N102.47 billion on May 20 to N78.96 billion on May 22 — a three-day contraction of approximately 23%.
Beyond the OMO auction itself, the CBN’s financial settlement data for the review period reveals significant primary market activity running concurrently.
The May 19 data separately recorded an OMO repayment of N2.247 trillion — a large cash injection into the system on that date — which helps explain why so much liquidity was available for the aggressive May 21 auction.
A direct comparison between the May 21 and May 12 auctions reveals stark differences in both scale and strategy. On May 12, the CBN conducted a 35-day and 70-day OMO auction but adopted a highly selective allotment approach.
Governor Olayemi Cardoso’s CBN has increasingly leaned on OMO bills as the instrument of choice for managing excess banking system liquidity, with cumulative OMO sales within the first four months of 2026 reaching approximately N30.12 trillion.
