September 13, (THEWILL) – The Nigerian Exchange (NGX) ended August with a modest monthly decline, but the headline figure concealed a much sharper correction that erased almost N6 trillion in market value within 11 trading sessions.
Market capitalisation stood at N158.33 trillion at the end of July before rising to a record N160.42 trillion on August 10. The market subsequently came under sustained selling pressure, with the All-Share Index (ASI) recording 10 consecutive losing sessions.
Between the August 10 close and August 21, the ASI fell from 248,529.75 points to 239,351.16 points, representing a decline of 9,178.59 points or 3.69 percent. Market capitalisation also fell by about N5.9 trillion during the period.
The sell-off was partly reversed in the final trading days of the month. By August 31, the ASI had recovered to 244,199.39 points, while market capitalisation rose to N157.74 trillion.
As a result, the NGX ended August about N587 billion below its July close, equivalent to roughly 0.37 percent of its end-July market value. The ASI declined 0.44 percent during the month, leaving its year-to-date gain at 56.93 percent.
The contrast between the sharp intra-month correction and the relatively small monthly decline suggests that August was less a market collapse than a period of aggressive repricing following an exceptional rally.
The NGX entered August after one of its strongest runs in recent years. Market capitalisation had risen from N99.38 trillion at the end of 2025 to N158.33 trillion by July, an increase of N58.95 trillion or about 59.3 percent in seven months.
That rapid appreciation created room for valuation concerns and profit-taking, particularly in stocks that had recorded substantial gains.
The correction was also concentrated among some of the market’s largest companies. BUA Foods lost approximately N1.52 trillion in market value during the sell-off, while MTN Nigeria shed about N1.39 trillion. Together, the two stocks accounted for roughly 49.3 percent of the N5.9 trillion decline recorded between August 10 and August 21.
Across the market, 12 blue-chip stocks accounted for about 70.7 percent of the value lost during the period. This concentration suggests that the correction was not necessarily evidence of broad-based deterioration across Nigerian equities. Instead, selling pressure was particularly severe in selected heavyweight stocks whose valuations had risen substantially.
Another factor that increased the pressure on equities was the growing attractiveness of fixed-income securities. At the August 12 Treasury Bills auction, investors submitted N4.4 trillion in bids against N700 billion on offer. The stop rate on the 364-day bill rose to 17.59 percent, while the 91-day and 182-day instruments cleared at 16.30 percent and 16.50 percent respectively.
The following day, investors submitted N4.93 trillion for N600 billion worth of Central Bank of Nigeria Open Market Operations bills. Stop rates reached 20.39 percent for the 103-day instrument and 20.01 percent for the 138-day bill, with the CBN allotting N2.60 trillion.
At the August 26–27 OMO operations, subscriptions reached N8.62 trillion, while the CBN raised about N4.72 trillion at rates ranging from 19.32 percent to 19.90 percent.
With relatively low-risk naira instruments offering yields close to or above 20 percent, fixed income became a more compelling alternative for investors looking to lock in returns after the stock market’s substantial gains.
For investors sitting on large equity gains, the combination of elevated valuations and attractive fixed-income yields could encourage portfolio rotation, even without a complete withdrawal from equities.
Foreign participation presents another weakness.
NGX data for July showed total transactions of about N2.37 trillion, with domestic investors accounting for 94.4 percent and foreign investors only 5.6 percent. Between January and July, foreign transactions represented about 10.8 percent of total market activity, compared with 89.2 percent for domestic investors.
Foreign inflows in July stood at N513.36 billion, against outflows of N779.43 billion, implying net foreign selling of about N266.07 billion.
The relatively low foreign participation means the NGX remains heavily dependent on domestic liquidity. While that liquidity has supported the market’s strong rally, it can also amplify portfolio rotations when investors move between equities, fixed income and other assets.
August also highlighted significant differences across sectors.
Banking stocks gained 3.82 percent during the month, while Consumer Goods rose 3.47 percent. Oil and Gas advanced 0.25 percent and the Commodities Index gained 0.89 percent.
In contrast, Industrial Goods declined 2.03 percent, while the Insurance Index suffered a much deeper 9.26 percent decline.
The divergence indicates that investors were not simply exiting Nigerian equities across the board. Capital continued to move into selected sectors while exposure to others was reduced, pointing to increasing sensitivity to valuations, earnings expectations and relative investment opportunities.
The late-August rebound provides perhaps the strongest argument against interpreting the correction as the beginning of an immediate market collapse.
For the week ended August 28, the ASI gained 0.81 percent, while the Proshare Market Cap-Weighted Index rose 2.38 percent and the Total Return Float-Adjusted Index gained 4.40 percent.
The recovery strengthened on August 31, when the ASI rose another 1.20 percent and market capitalisation increased by about N1.91 trillion to N157.74 trillion. Trading volume reached 606.13 million shares, valued at N38.66 billion.
A market that loses almost N6 trillion in 11 sessions and then recovers a substantial portion of that decline before month-end is behaving more like a market undergoing repricing and rotation than one experiencing a systemic breakdown.
However, the correction has changed the risk profile of the market.
September will test whether August restored enough valuation discipline to support another sustainable advance. Investors will be watching fixed-income yields closely, particularly if OMO and Treasury Bills continue to offer returns around 20 percent.
Corporate earnings will also become increasingly important. After the ASI delivered a 56.93 percent year-to-date gain by the end of August, investors are likely to demand stronger earnings justification for further share-price appreciation.
Foreign participation will be another key variable. A stronger return of international investors could provide an additional source of liquidity, while continued foreign selling would leave the market more dependent on domestic investors and vulnerable to sharp portfolio rotations.
Nigeria’s expected return to FTSE Frontier Market classification from September 21 could improve the country’s visibility among international investors, although the reclassification itself does not guarantee immediate or substantial foreign inflows.
The broader macroeconomic environment will also shape the outlook. Greater exchange-rate stability, easing inflation and stronger corporate earnings could support another leg higher. Conversely, persistent high yields, renewed naira pressure or weaker earnings could keep investors defensive.
Ultimately, August appears to have been a warning rather than a verdict.
The NGX did not lose N5.9 trillion over the entire month. Rather, it suffered an almost N5.9 trillion intra-month correction before recovering much of the decline and ending August about N587 billion below its July close.
That distinction matters.
The market’s extraordinary 2026 rally has entered a more demanding phase. With the ASI still up 56.93 percent year-to-date, momentum-driven gains may become harder to replicate. Investors are likely to become more selective, placing greater emphasis on earnings, valuations and the relative attractiveness of competing assets.
For the NGX to sustain its next advance, the rally will increasingly need to be supported by corporate earnings, broader investor participation and stronger fundamentals rather than momentum alone.
For now, August looks more like a reset following an exceptional rally than the beginning of deeper market weakness. But the correction has exposed the conditions that could trigger another sell-off, and September will show whether the market has absorbed those risks or whether August was only the first warning.
Ogochukwu Onwaeze is a writer specializing in business and economic journalism. At THEWILL News Media, she translates market trends, financial developments, and policy shifts into clear and engaging stories.
