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The Central Bank of Nigeria – CBN successfully raised N1.457 trillion at its Nigerian Treasury Bills – NTB primary market auction on Wednesday, June 3, 2026. Despite an original offer size of N1 trillion, the apex bank chose to over-allot due to an overwhelming demand that saw aggregate investor subscriptions soar to N2.160 trillion.

This heavy oversubscription—more than double the offered amount—was heavily concentrated in the long-term instrument, where institutional investors scrambled to lock in risk-free yields over a 12-month horizon.

In a decisive move to align with the country’s tight monetary policy environment, the CBN hiked the stop rates across all three maturities. The short-term 91-day bill cleared at 16.05% (an increase of 10 basis points), while the medium-term 182-day instrument ticked upward by 5 basis points to close at 16.19%. The star of the auction, the 364-day bill, attracted a massive N1.946 trillion in subscriptions against an N800 billion offer, prompting the CBN to allocate N1.243 trillion as its stop rate jumped by 20.1 basis points to settle at 16.35%.

The upward adjustment in stop rates remains consistent with the broader fixed-income landscape in Nigeria, following the Monetary Policy Committee’s decision to hold the benchmark interest rate – MPR at 26.50%.

Interestingly, the CBN has deliberately sustained a structural spread between regular Treasury bills and Open Market Operations – OMO instruments throughout 2026. The 16.35% stop rate on the one-year paper remains structurally lower than OMO rates, which cleared as high as 20.37% to 21.80% in late May, meaning the primary NTB market continues to serve a distinct class of retail and institutional yield-seekers.

This pricing session is considered one of the most competitive NTB primary auctions of 2026, marking the second consecutive cycle where yields rose across all tenors. The results show that the central bank accommodated all N131.18 billion worth of bids for the 91-day paper (maturing September 3, 2026) while opting for partial allotments on the 182-day and 364-day instruments.

For investors with a solid one-year investment horizon, the current primary yield offers a highly attractive entry point compared to the broader secondary bond market, which averaged yields of 16.02% just a day prior to the auction.

Crucially, this N1.457 trillion mopped up by the CBN serves as the first major liquidity management defensive event of June 2026. The Financial Markets Dealers Association – FMDA has projected a massive wall of liquidity hitting the banking system this month, totaling N10.90 trillion in inflows, with N7.77 trillion arriving from maturing OMO bills alone.

Since this initial NTB auction only absorbs a fraction of that expected cash injection, financial analysts anticipate that the CBN will launch multiple aggressive OMO auctions later in the month to systematically park excess cash and curb potential inflationary expansion.