The Nigerian Exchange (NGX) has introduced new regulations that alter how stock prices are permitted to move, a change approved by the Securities and Exchange Commission on June 16, 2026, with an effective date yet to be announced. Under the new framework, a minimum number of shares must be traded in a single transaction for a stock's price to shift; any trade below this minimum is disregarded for price movement purposes.
These rules are part of a broader regulatory push that has already modernized trade settlements and clearing systems. The changes significantly raise the price bands that define stock groups A, B, and C. Previously, Group A covered stocks priced at N100 and above, Group B from N5 to N99.99, and Group C from 1 kobo to N4.99. The new structure defines Group A as stocks priced at N1,000 and above, Group B from N500 to N999.99, and Group C from 1 kobo to N499.99.
This reclassification means many stocks previously in higher groups have moved down. For instance, GTCO at N128.35, formerly Group A, is now Group C. Similarly, MTN Nigeria at N800, also formerly Group A, is now Group B.
While the price bands have changed, the tick sizes—the minimum step by which a stock price can move—remain the same per group: 10 kobo for Group A, 5 kobo for Group B, and 1 kobo for Group C. Stocks that have moved into lower groups will now experience price changes in smaller increments than before, offering traders more precise entry and exit points.
Group A: Shares Priced at N1,000 and Above
For stocks in Group A, the minimum trade required to move the price is 10,000 units, with a tick size of 10 kobo. As of June 18, 2026, only nine stocks qualified for this group, including Seplat Energy, Airtel Africa, Nestle, Dangote Cement, Presco, Aradel, Okomu Oil, Geregu, and AVA Infrastructure Fund. For Seplat, a price movement now requires a single transaction of N113 million, a 90% reduction from the N1.136 billion needed under the old rules. This change suggests potentially more participants and trading opportunities.
Group B: Shares Priced Between N500 and N999.99
Group B stocks require a minimum of 50,000 units to trade before the price can move, with a tick size of 5 kobo. As of June 18, 2026, only four stocks were in this category: MTN Nigeria, BUA Foods, Total Nigeria, and Betaglass. For MTN Nigeria, a price move necessitates a trade of N40 million. The new rules have halved the capital required to move these stocks compared to the old rules, potentially opening opportunities for retail investors and smaller institutions.
Group C: Shares Priced Below N500
This group, requiring 100,000 units to trade for a price movement and having a 1 kobo tick size, is the most populated and sees the most significant change. Most stocks previously classified under the old Group A (N100 and above) have been reclassified into Group C. This includes virtually all bank stocks like GTCO, Zenith Bank, Access Holdings, UBA, FirstHoldCo, Fidelity Bank, as well as many consumer goods names and stocks commonly traded by retail investors.
While the investment threshold to move prices in Group C has not changed, the tick size has decreased from 10 kobo to 1 kobo. This means a trader needs ten price movements to achieve what one movement previously delivered, slowing down price progression and reducing the return per step. The burden of this reform, according to the report, falls unevenly, with Group C investors facing slower price movements.
In related market news, the Nigerian equities market closed the third week of June on a bearish note, extending its losing streak to six consecutive trading sessions. Market capitalization fell by N938.75 billion to N151.33 trillion from N152.27 trillion recorded on Thursday, June 18, 2026. The All-Share Index declined by 0.62% to close at 235,941.27 points. This decline was attributed to sustained profit-taking in large- and mid-cap stocks, including major banking stocks like Zenith Bank, Access Holdings, and UBA, as well as industrial and consumer stocks.
The market downturn was also influenced by a regulatory shake-up targeting large banking groups, stemming from draft guidelines for financial holding companies (HoldCo) by the Central Bank of Nigeria (CBN). These guidelines introduced strict “ring-fencing” rules and revised capital calculation methods, potentially creating capital shortfalls and fears of dilution for affected banks.
Investors are also locking in gains after a historic rally and reallocating funds to high-yield Nigerian Treasury Bills, which are yielding between 16.13% and 17.51%. Global capital movements, including the US Federal Reserve's high-rate environment signals, are also contributing to foreign investors withdrawing capital from emerging markets like Nigeria.
