Why Nigeria’s NGX ASI May Be Safer at These Highs Than South Korea’s KOSPI
– By Chinedu Okoye
As of July, 10 2026, Nigeria’s All-Share Index (NGX ASI) [See Chart 1 below) was near record highs while South Korea’s KOSPI had just slumped sharply [See Chart 2].
The NGX ASI stood around 55.65% year-to-date, in local currency terms and 67% in USD terms, making it the world’s top-performing equity market among 92 tracked indices.
By contrast, KOSPI had fallen from a June 19 high of 122% year-to-date gains in local currency terms, before retreating to the 7,475.94 points, to record a +70.45% year-to-date gain in local currency terms, but losing about a fifth of its value in USD terms to slip to a 66% year-to-date gain in USD.
Naturally, such a fall in Korea spooks investors in similar bull EM/FM markets, but Nigeria’s market is supported by different fundamentals. As a result, we discuss the key factors that help explain why NGX investors may feel more confident than Korean investors at these levels.
These include variations in the following risk categories; inflation risks, interest rate risks, exchange rate risks, insolvency, liquidity risks, and for the Index, concentration risks.
1. Inflation Risk:
Nigerian headline inflation sits between 15–16% in in April and May 2026, far above South Korea’s (between 2.6–3.2% between April and June). However, many NGX-30 companies have strong pricing power and sell essential goods (banks, consumer staples, telecoms, etc.), making demand relatively inelastic
By contrast, South Korean inflation is relatively lower, but KOSPI’s gains have been driven by highly cyclical tech hardware (chips, electronics), which can suffer sharply under cost pressures or slowing global demand.
Per Zero Equilibrium analysis, while Nigerian inflation is higher, its market’s sector mix allows more for selective passthrough of costs, which then dampens the impact of inflation on equities.
2. Interest Rate Risk:
The Central Bank of Nigeria (CBN) has only modestly eased policy in 2026. It cut the MPR from 27.0% to 26.5% at its Feb 2026 meeting and then held rates at 26.5% in May. In contrast, the Bank of Korea has kept its policy rate unchanged at 2.50% through the first half of 2026, pausing a previous tightening cycle. Crucially, Nigeria’s inflation, while high, has been relatively stable month-to-month (15.4% in March, 15.7% in April, and 15.9% in May), allowing the CBN to stay cautious.
The less aggressive Fed/Korea rate outlook means NGX equities may face a gentler rate environment:
Nigerian rates have seen only one cut so far, whereas the Bank of Korea has held jeybrates throughout the year and are expected to raise it by 25 basis points (0.25%) in July's meeting. This is as energy prices, low Won, and sticky core inflation keep headline prices elevated beying BOK targets.
Hence, you have a situation where inflation driving the economy in different directions monetary policy wise, as the Bank of Korea is expected to hike more than the Central Bank of Nigeria, a lower interest volatile environment.
3. Insolvency (Credit) Risk:
Equity markets price growth and valuation, not fixed-income credit flows. The NGX ASI consists of solid companies with strong balance sheets; insolvency fears affect bond yields more than stock prices.
As a result, widespread credit defaults (which would scare bond investors) are largely “priced out” of the equity market. Investors are looking at earnings and dividends of banks, oil firms, etc., not worrying that the sovereign or corporates will suddenly default on stock claims. As far as it's rally has been steady, the NGX ASI is not over-leveraged, and neither are majority of its constituent stocks threatened by corporate bankruptcies in the way bond it an overly leveraged equity market would be.
4. Exchange Rate Stability:
The Naira has been unusually stable this year. USD/NGN started 2026 near N1,377.92/$1 and hovered around July, to record a mild appreciation of 3.95%. By contrast, the won has weakened (USD/KRW ≈₩1,498.87/$1 by July 10).
This matters because not only does a collapsing local currency can devastate equity returns for foreign investors and fuel capital flight, but also because the Nigerian Stock Market gains are only higher than the Korean KOSPI in USD percentage year-to-date growth terms.
Nigeria’s FX reforms and oil revenues, and stable FX infows from Diapora remittances and steady investor demand for government securities providing FPI have steadied USD liquidity, so NGX’s surge hasn’t. This reduces the chances of an FX depreciation induced selloff.
Hence, therenis a legitimate absence of a currency shock threat to the NGX at these levels, whereas dollar-strength in Korea adds further dent to KOSPI returns sharply (as has been seen when tech stocks fell and the won weakened).
5. Liquidity & Investor Base:
NGX is dominated by local investors (pension funds, asset managers and affluent Nigerians) not fickle foreigners. In Q1 2026, domestic players accounted for 83% of NGX trading (vs. about 17% foreign investor participation). This large, stable domestic pool provides deep liquidity, and so large buy/sell orders by local institutions can be absorbed without dramatic price swings.
By contrast, KOSPI has a much larger share of foreign portfolio ownership. When global tech sentiment turned south in July, foreign investors quickly pulled back from Korea triggering large volume volatility. In Nigeria, even when there is some foreign investor pause, the domestic market have continued to back large, fundamentally strong companies, cushioning the market.
This essentially means NGX can better weather short-term panics, as its rally has been driven by solid local demand, not just hot foreign money.
6. Concentration & Sector Exposure:
KOSPI is highly concentrated in tech semiconductors. For example, Samsung Electronics and SK Hynix together comprise roughly over half of KOSPI’s market cap. Samsung as if June accounted for 28.34% whilst SK Hynix accounted for 26.42%
Because he the index is heavily weighted toward these two chipmakers, the KOSPI’s performance is highly sensitive to the global semiconductor cycle and AI-driven memory demand. This has led to amplified volatility as leveraged ETFs tied to these two stocks have recently amplified market downturns.
Early July saw sharp declines in both stocks triggered by multiple circuit breakers, this then pushed the KOSPI into a technical bear market. Thus a small setback in memory chips or tech demand instantly drags the entire index.
Nigeria’s ASI, by contrast, is broad-based no single stock is anywhere near that dominance. The NGX is led by banks, industrials, oil & gas majors, consumer and telecom firms. All sectors with more stable domestic demand.
(Chart 6: NGX ASI Top 15)
This sectoral balance means NGX is less vulnerable to one-industry shocks, a feature that had see the index avoids the ‘high-tech rally-then-crash’ cycle that KOSPI experienced. Even on strong news days, NGX has not needed circuit breakers, and its moves have been steadier.
Monolithic Risks In the South Korean Market and the Multi-Industry Hedge in the Nigerian Market:
The NGX is not totally riskless on the concentration front. However, no two companies account for 50% of the index, unlike South Korea's KOSPI. Though a heavy individual price movement in a couple names can swing the NGX ASI by 2% - 3% in a day if all other stocks remain relatively flat, the pace at which this swings could happen would depend on how many stocks and in what industries, and what is happening in other stocks.
However, in the Korean case, a -5% hit to Samsung and SK Hynix can result in a -2.74% decline, should all other stocks stay flat. Meaning just two companies can pull the index into a deep daily loss, on a relatively flat period for the rest of the index.
This amplified risk, is what is absent in the Nigerian market, and makes the NGX ASI less susceptible to but not totally avoidant of a wild daily selloff. As this selloff would have to happen across at least three industries or involve every stock in a particular industry. Given the relatively more dispersed industry weighting of the NGX per Chart 7 below.
Putting this into perspective;
If global PC demand drops or memory chip prices crash, both Korean giant stocks plummet together.
For the NGX to suffer a KOSPI-style daily crash, a disaster cannot just happen to one or two companies, it must bridge across completely unrelated sectors. This is to say that, a multi-industry economic failure is necessary to force a true market capitulation.
South Korea just needs one industry and two companies to take a massive hit. In Nigeria, it would have to be a scenario that cuts through the infrastructure (affecting industrials), consumer goods and connectivity (Telecoms)
i). A sudden crash in private and public building/real estate/building infrastructure hitting Dangote and BUA Cement,
ii). An acute purchasing power collapse hitting BUA Foods, PZ Cussons, Nestlé. and,
iii). A massive regulatory fine or telecom spectrum shutdown hitting MTN and Airtel.
Because these industries have different input costs, supply chains, consumer bases, and hence, risk exposures, they can somewhat be economic shock absorbers for each other. If telecoms are struggling with foreign exchange losses, the banking, consumer goods or oil sectors might remain strong.
This is the essential reason the overall Index relatively more stable. This is illustrated below in the Shock Scenario analyses presented.
Schock Scenario(s) and [Historical] Market Responses:
Here we analyse the market reaction to two heavy market altering shocks, namely; FX Devaluation, USD liquidity tightening or Naira Pressure, as seen post the 2023 devaluation, and then energy price spikes per earlier in mid H1 2026.
Shock Scenario 1: FX Devaluation or Naira Pressure:
In this Scenario, Telecommunications & Consumer Goods are negatively impacted, as Telecoms (MTN, Airtel) hold heavy dollar-denominated tower lease liabilities and capital expenditure commitments. And also, Consumer Goods companies (BUA Foods, Nestlé) rely on imported raw materials like wheat and sugar.
This pressures margins and Investors could rapidly dump these shares, causing the Telecommunications (18.98%) and Consumer Goods (14.54%) sectors to dip.
On the flip side, Oil & Gas & Financial Services companies (Seplat, Aradel) are impacted positively as seen in the first half of the year, as they sell crude oil and/or products in USD benchmarked prices. So, their revenues automatically rises in Naira terms during a devaluation. Whilst Tier-1 Banks (GTCO, Zenith, FBNH) who typically hold significant net positive foreign currency assets, see a massive multi-billion Naira unrealized FX revaluation gains.
In times like these, Investors rush to these stocks as a safe haven, their share prices could then surge, and the Oil & Gas (9.51%) and Financial Services (10.60%) sectors expand considerably, this then absorbs the index losses from telecoms and consumer goods.
Shock 2: An Energy Price Spike (Diesel & Grid Power):
A massive spike in local energy costs, (say, a sharp increase in diesel prices or industrial gas tariffs) tests the operational elasticity of Nigeria's heavy industries. Precisely the Industrial goods sector (Dangote, BUA Cement, Lafarge as cement manufacturing is exceptionally energy-intensive).
If they cannot fully pass these costs onto consumers due to a slowing real estate market, their profit margins contract. This then results in the Industrial Goods (26.14%) sector facing downward price pressure.
However, this is balanced out by other anchor industries (Utilities & Oil & Gas) that will most likely be affected positively and as power generation companies (Geregu Power) and domestic oil and gas producers see their asset values and pricing power rise alongside energy benchmarks prices, and capital rotates out of manufacturing and into energy providers.
The expansion of Utilities (1.81%) and [downstream oil and gas] energy players then prevents a complete index capitulation, like we've seen in Korea, even while the massive industrial blocks are declining.
Summary:
• In summary, while both indices have run up strongly, Nigeria’s market rests on a different footing.
• The NGX ASI’s climb has been supported by rising corporate earnings in inelastic industries, a modest-rate policy mix, a (so far) stable currency, and deep local buying.
• These factors help quell fears at the ZE camp that NGX is on the brink of a crash like KOSPI’s. For the KOSPI’s selloff signifies its dependence on high-flying tech shares and foreign flows.
• For Zero Equilibrium analysts, this suggests that the NGX highs may indeed be more sustainable than Korea’s recent peak, though continued vigilance on inflation, FX, and monetary policy will of course remain important.
• The NGX ASI isn't absent a concentration problem, the KOSPI, however has a concentration and a correlation problem
• Nigeria's index structure ensures that while individual "heavyweights" can cause turbulence, it will take a systemic, multi-industry economic failure to cause a true market capitulation.
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