Nigeria's Treasury bill market witnessed an extraordinary surge in demand at the primary market auction held on July 15, with investors flooding bids worth N2.87 trillion for the 364-day instrument alone. The Central Bank of Nigeria (CBN), which had offered only N400 billion, ended up allotting N1.19 trillion to meet some of the overwhelming appetite. The auction results underscore a deepening hunger for naira-denominated risk-free assets amid persistent inflation and currency uncertainty.
Record Oversubscription Reflects Investor Sentiment
The 364-day Treasury bill auction recorded a bid-to-cover ratio exceeding 7:1, meaning for every naira offered, investors bid more than seven naira. This is one of the highest oversubscription levels seen in recent years. Total bids across all tenors — including the 91-day and 182-day instruments — reached N3.4 trillion, but the long-dated bill attracted the lion's share. Analysts attribute the frenzy to a combination of factors: attractive stop rates, a lack of alternative investment options, and a cautious outlook on the naira.
The CBN set the stop rate for the 364-day bill at 22.50%, unchanged from the previous auction. This yield, though not increasing, remains compelling in a real interest rate environment that is still deeply negative. With inflation hovering above 33%, the nominal return is insufficient to preserve purchasing power, but investors are prioritizing liquidity and safety over real returns. The massive demand also reflects a shortage of high-quality naira assets. Equities remain volatile, and the fixed income market outside government securities is thin.
To put the numbers in perspective, the N2.87 trillion bid for the 364-day paper alone is roughly equivalent to 2.5% of Nigeria's GDP. The previous auction on June 17 saw bids of N1.8 trillion for the same tenor, making the July 15 auction a 60% increase in demand month-on-month. This surge is partly due to the CBN's decision to maintain the stop rate at 22.50% for three consecutive auctions, which has given investors confidence in yield stability. However, the bid range for the 364-day bill was wide, with some bids as high as 24.50%, indicating that many investors were willing to accept higher yields. The CBN's choice to allot at the lower end suggests a deliberate effort to cap borrowing costs.
Why Investors Are Piling into Long-Dated T-Bills
The 364-day Treasury bill is the longest tenor available in the primary market, offering a balance between yield and liquidity. For banks, pension funds, and asset managers, it serves as a core holding for regulatory compliance and cash management. The recent auction saw participation from a broad base of investors, including foreign portfolio investors who have been returning to the Nigerian market following the liberalization of the foreign exchange market.
One key driver is the CBN's tight monetary policy stance. With the Monetary Policy Rate (MPR) at 26.25%, short-term rates have adjusted upward, making T-bills more attractive. However, the stop rate on the 364-day bill has been sticky, which suggests the CBN is reluctant to push yields higher due to the impact on its own borrowing costs. The central bank uses T-bill auctions to manage liquidity and signal policy direction. By allotting more than initially planned, it absorbed a significant amount of naira liquidity from the banking system, which helps curb inflationary pressures.
Pension funds, which manage over N18 trillion in assets, are mandated to invest a minimum of 60% in government securities. As of June 2024, pension fund managers had allocated about 75% of their portfolio to FGN bonds and T-bills, according to the National Pension Commission. This regulatory requirement drives consistent demand for T-bills, regardless of yield levels. Similarly, banks use T-bills for liquidity ratio compliance; the CBN requires banks to maintain a minimum liquidity ratio of 30%, and T-bills are the most liquid instrument available.
Foreign investors have also returned to the Nigerian market after the CBN unified the exchange rate windows in June 2023. Data from the FMDQ shows that foreign portfolio inflows into T-bills rose to N450 billion in the second quarter of 2024, up from N120 billion in the same period last year. These investors are attracted by the high nominal yields and the improved FX liquidity, though they remain wary of currency risk. The 364-day T-bill offers a hedge against short-term naira volatility, as it allows them to lock in a fixed return for nearly a year.
Implications for the Broader Economy
The massive subscription has several implications. First, it indicates that the financial system is flush with naira liquidity, but that liquidity is not flowing into productive sectors. Instead, it is being parked in government securities, a classic sign of crowding out. Private sector credit growth remains tepid, as banks prefer to lend to the government at risk-free rates rather than extend credit to businesses. This could stifle economic expansion and job creation.
According to the CBN's latest statistical bulletin, private sector credit grew by only 8% year-on-year in May 2024, compared to a 25% growth in government borrowing. The spread between the average lending rate (around 28%) and the T-bill rate (22.5%) is narrow, leaving little incentive for banks to take on credit risk. Small and medium enterprises, which account for 48% of GDP, are particularly affected. Many SMEs report that bank loans are either unavailable or priced at rates above 30%, making them prohibitive.
Second, the CBN's decision to allot N1.19 trillion — nearly three times the original offer — means it has effectively drained a large amount of liquidity from the system. This is a monetary tightening move, which should help support the naira and contain inflation. However, it also means the government's borrowing costs remain high, as the stop rate is still elevated. The Debt Management Office (DMO) will have to factor this into its overall debt strategy. The DMO's 2024 borrowing plan includes N6.5 trillion in T-bills, and if the CBN continues to allot above offer, the government may exceed its target, increasing debt service costs.
Third, for investors, the T-bill auction provides a safe haven, but it also signals that expectations for currency depreciation remain high. Many investors are demanding a premium to hold naira assets, and the stop rate of 22.50% is still below the inflation rate, meaning real returns are negative. The fact that investors are still piling in suggests they are either compelled by regulation or are betting on a stable naira in the short term. The naira has traded within a range of N1,500 to N1,550 per dollar in the official market since May, after the CBN introduced a new FX code and tightened monetary policy. This stability has encouraged some foreign investors to return, but the forward market still implies a depreciation of about 10% over the next year.
What the Stop Rate Tells Us
The stop rate for the 364-day bill has been at 22.50% for several consecutive auctions. This stability is deliberate. The CBN wants to anchor short-term rates while avoiding a spike in borrowing costs. However, the market is signaling that it wants higher yields. The bid range for the 364-day bill was wide, with some bids as high as 24%, but the CBN chose to allot at the lower end. This suggests the central bank is using moral suasion to keep yields down, possibly to align with its broader monetary policy objectives.
A Treasury bill is a short-term government security that matures in less than one year. It is sold at a discount to face value and does not pay periodic interest. The return to the investor is the difference between the purchase price and the face value at maturity. T-bills are considered risk-free because they are backed by the government. They are used by the central bank to manage money supply and by investors for cash management and liquidity.
In the July 15 auction, the CBN offered N100 billion of the 91-day bill, N100 billion of the 182-day bill, and N400 billion of the 364-day bill. Total subscriptions were N3.4 trillion, with the 364-day bill accounting for 84% of bids. The CBN allotted N50 billion of the 91-day bill at a stop rate of 18.50%, N100 billion of the 182-day bill at 19.50%, and N1.19 trillion of the 364-day bill at 22.50%. The allotment for the 364-day bill was nearly three times the offer, indicating that the CBN was willing to absorb more liquidity than initially planned.
The decision to keep the stop rate unchanged despite oversubscription is a balancing act. If the CBN had allowed the stop rate to rise to clear the market, it would have increased the government's borrowing costs and potentially signaled a more hawkish stance. By keeping rates steady, the CBN aims to maintain stability in the fixed income market and avoid a yield spiral. However, this approach risks creating a disconnect between primary and secondary market yields. In the secondary market, the 364-day T-bill was trading at around 23.50% on July 16, suggesting that investors demand a higher yield for immediate liquidity. This arbitrage opportunity could lead to increased secondary market activity.
Outlook for Future Auctions
Looking ahead, the demand for T-bills is unlikely to wane as long as inflation remains high and alternative assets are unattractive. The CBN may continue to allot above the original offer to mop up excess liquidity. However, there is a limit to how much the central bank can absorb without distorting the market. If stop rates remain capped, investors may shift to the secondary market or to other instruments like Open Market Operations (OMO) bills, which offer higher yields. OMO bills, which are issued by the CBN for monetary policy purposes, currently yield around 24% for the 364-day tenor, and they are not subject to the same constraints as T-bills.
The N1.19 trillion allotment is a clear signal that the CBN is prioritizing liquidity management over cost minimization. The central bank is essentially paying a premium to keep the system tight. For the average Nigerian, the T-bill auction is a distant event, but its effects ripple through the economy: higher government borrowing costs can lead to higher taxes or reduced spending, while tight liquidity can slow economic activity.
The DMO is scheduled to auction another N1.5 trillion in T-bills in August, and based on current trends, demand is expected to remain strong. However, the CBN may face pressure to raise stop rates if inflation continues to accelerate. The National Bureau of Statistics reported that inflation rose to 34.19% in June, up from 33.95% in May, driven by food and energy prices. If the CBN does not adjust yields, investors may begin to withdraw from the primary market, forcing the central bank to change its strategy.
Another factor to watch is the federal government's fiscal position. With oil revenue underperforming due to production shortfalls and subsidy costs, the government relies heavily on borrowing. The 2024 budget deficit is projected at N9.18 trillion, and T-bills are a key source of financing. If the CBN continues to allot above offer, it may help the government meet its financing needs, but at the cost of higher debt service. Debt service costs for 2024 are estimated at N8.2 trillion, already exceeding the budget allocation. Every basis point increase in T-bill yields adds billions to the government's interest bill.
Conclusion: A Market at a Crossroads
In summary, the July 15 auction was a landmark event in Nigeria's fixed income market. The record bid of N2.87 trillion for the 364-day instrument and the CBN's allotment of N1.19 trillion highlight the intense demand for safe naira assets. While this provides a buffer for the government's financing needs, it also underscores the challenges of channeling savings into productive investment. The path forward requires not just monetary policy adjustments but structural reforms to make the real economy more attractive than paper assets.
The oversubscription is a double-edged sword. On one hand, it shows confidence in the government's ability to repay, at least in the short term. On the other hand, it reveals a lack of confidence in the private sector and the broader economy. Until inflation is brought under control and the naira stabilizes, investors will continue to flock to T-bills, and the CBN will be forced to manage the consequences. The July 15 auction is a snapshot of an economy in transition, where the search for safety often comes at the expense of growth.