Nigerian Exchange (NGX): how it works, who runs it, and what issuers must disclose

What this exchange is

Nigerian Exchange Plc — almost everyone still calls it the NGX or simply “the exchange in Lagos” — is Nigeria’s main securities market, headquartered on Custom Street in Lagos. It was created in 2021 when the old mutual Nigerian Stock Exchange, founded in 1960, demutualised and became a company owned by shareholders instead of by its member brokers.

Its ISO 10383 market identifier code is XNSA, and shares are priced in Nigerian naira. What changes hands there is narrower than on a developed-market exchange but broad for the region: company shares across three boards, federal government bonds, corporate bonds, exchange-traded funds and a small shelf of index derivatives.

The NGX matters far beyond its size. It is the price discovery mechanism for Africa’s largest economy by population, and its biggest stock — Dangote Cement — alone has at times accounted for a quarter of the entire market’s value.

Who owns it

The exchange is owned by Nigerian Exchange Group Plc, the holding company created in the 2021 demutualisation, which is itself listed on the exchange under the ticker NGXGROUP. Its shares are widely held by Nigerian institutions, pension funds and the former member stockbroking firms that received shares in the conversion; no single shareholder controls it.

Temi Popoola has been group chief executive since the demutualisation, leading the push to modernise the market’s technology and attract listings.

Who regulates it

The Securities and Exchange Commission — SEC Nigeria, not to be confused with its American namesake — supervises the exchange and every company listed on it. Its authority came for years from the Investments and Securities Act 2007, replaced and modernised by the Investments and Securities Act 2025, which strengthened the SEC’s powers over market abuse, digital assets and systemic infrastructure.

The SEC licenses the exchange, approves its rulebook, can suspend trading in a security, sanction listed companies and fine or ban directors. The NGX’s own rules take effect only after SEC approval.

Listed companies file their results and material announcements through the NGX’s issuer portal, where they become public, and the exchange publishes them on its own market notices feed.

What trades there

Three equity boards serve different kinds of companies: the Premium Board for the largest, most liquid names that accept higher governance standards; the Main Board for established companies; and the Growth Board — split into Entry and Standard segments — for smaller and younger firms with lighter requirements.

Around 150 companies are listed, dominated by cement, banks, consumer goods, telecoms and oil and gas. Alongside equities there is an active fixed-income shelf — Federal Government of Nigeria bonds trade here — plus a handful of ETFs and exchange-traded derivatives on the benchmark index.

What it takes to list

For the Main Board, a company generally needs several years of operating history, audited accounts showing profitability, a minimum level of shareholders’ funds, and a free float of at least 20 per cent of its shares — for very large companies the float test can alternatively be met by value. The Premium Board adds governance and liquidity conditions on top.

The Growth Board relaxes the profit record and float size for SMEs, in exchange for a designated adviser who vouches for the company. Exact current thresholds live in the NGX Rulebook; they are adjusted from time to time.

What companies must tell you

Listed companies must publish audited annual financial statements within three months of their financial year end, unaudited quarterly results on a set calendar, and — crucially — any price-sensitive information immediately, before it leaks. All disclosure is in English.

Insider dealing, selective disclosure and late filing are sanctionable; the exchange publishes fines and suspensions. In practice, enforcement quality has improved markedly since the demutualisation, though small-cap reporting discipline remains uneven.

How trading works

Trading is fully electronic on an order-driven central limit order book — the exchange has run on screen-based trading since 1999, a point of pride, and today uses a platform upgraded with Nasdaq technology. The session runs on Lagos time with a continuous market and opening and closing auctions.

Brokers must be licensed dealing members of the exchange. Retail investors increasingly trade through app-based brokers, a channel that has grown sharply since 2020.

How a trade is settled

Equity trades settle three business days after execution — T+3 — through the Central Securities Clearing System (CSCS), which acts as central counterparty and depository. The exchange has signalled its intention to shorten the cycle toward T+2; until a formal migration is announced, T+3 is the operative standard.

Cash moves through settlement banks; shares move in the CSCS depository, where every investor holds a CSCS account.

Short selling, lending and margin

Short selling is permitted under SEC rules introduced over a decade ago, with covered positions only, and a securities-lending market exists through the CSCS. In practice, short selling remains rare: the lending pool is thin, borrow is expensive, and most institutional investors in Lagos simply stay long or stay out.

Can a foreigner buy here?

Yes. Nigeria places no ownership cap on foreign portfolio investors in listed equities, and any investor can open an account through a licensed broker with a CSCS number. The real friction is not permission but currency: dividends and sale proceeds are repatriated through the official foreign-exchange windows, and in periods of naira stress investors have faced delays and unfavourable conversion rates. That FX risk — not the exchange — is what keeps many global funds underweight Nigeria.

What it costs

Trading costs are charged as small percentages of value: the exchange’s trading fee, the SEC’s fee, the CSCS settlement fee, plus stamp duty on share transfers. All-in friction for an institutional trade is well under one per cent round trip; the exact schedule is published on the NGX website and scales with trade size. Listing fees likewise scale with the market value of the shares listed.

Where the prices are

The NGX publishes daily official lists and market statistics on its own website, and Bloomberg and the other major vendors carry the market live. Coverage is real but top-heavy: beyond the thirty most liquid names, daily vendor data gets thin quickly, which is one reason this library exists. The Rio Times prices its NGX coverage from a daily end-of-day data feed, verified against the exchange’s own publications.