Rethinking NGX Valuation: An investable economy lens on Nigeria’s equity market

The traditional Buffett Indicator, market capitalisation divided by GDP, suggests Nigeria is structurally “cheap.” However, post-rebasing data and NGX composition dynamics indicate that this interpretation may be statistically misleading in frontier economies with high informality and ownership concentration.

For full year 2025, Nigeria’s nominal GDP stands at approximately $307.5 billion (N441.53 trillion), with non-oil GDP estimated at N423.87 trillion after stripping oil’s approximately 3.5–4 percent contribution and assuming approximately N1,436/$1 at year end.

NGX total market capitalisation is approximately N157 trillion as at August 31st 2026, with free-float adjusted capitalisation estimated at N41.10 trillion, as our computation works out to around 26 percent, consistent with sector ownership structures (financial services: 57 percent, industrials: 7 percent, conglomerates: 56 percent, consumer goods: 13 percent, etc.).

This produces a structurally adjusted valuation framework of approximately 0.10, implying an Investable Economy Ratio (IER) of roughly 10 percent, significantly below emerging market medians (30-55 percent) and developed markets (100 percent+).

At face value, this suggests deep undervaluation. However, I would caution against linear interpretation. Nigeria is not a cheap equity market rather it is a shallow proxy for a deep but only partially publicly investable economy. The structural explanation lies in three empirically observable distortions:

First, listing density remains low. A large share of…