How the market actually works

Liquidity decides the gap between what a price quote says and what a seller actually gets paid. On a thinly traded stock, that gap can be wide enough to make the last traded price almost meaningless as a guide to what you could realise if you sold today. The quote tells you where the last trade happened. It does not tell you how much stock could move at that price, or how far the price would have to fall to find a buyer for your full position.

A share that closes near the ±10% ceiling on the NGX has not necessarily had a big trading day. What decides that is the volume sitting behind the move, and under the threshold rule now in force, the capital needed to produce that volume is wildly different for a ₦5 stock and a ₦1,000 stock.

A market order tells your broker to buy or sell now, at whatever price the market will give you. A limit order tells your broker to buy or sell only at a price you set, or better. That difference sounds small until you are the one holding a stock nobody wants to buy.

The NGX All-Share Index is a market-capitalisation weighted number, not a readout of how the average listed company performed. That distinction matters more than most headlines suggest. In March 2026, BusinessDay reported that ten companies accounted for about 61% of the entire Exchange's value. That means the index can climb sharply while most of the 140-plus other listed firms barely move, and a reader watching only the headline figure would have no way of knowing which situation they are in.

When you pull up a stock on the Nigerian Exchange and see a bid of ₦24.50 and an ask of ₦25.00, you are looking at two queues. The bid is what the highest buyer right now is willing to pay. The ask is what the lowest seller right now will accept. The gap between them, the spread, is the cost of trading immediately rather than waiting. A thin order book, where that spread is wide and the volume behind each price level is small, is not a quirk of a sleepy counter. It is information, and it tells you something about how easily you can get out of a position when you need to, not just how to get in.

Settlement is the point at which a trade stops being a promise and becomes a fact: cash moves to the seller, shares move to the buyer, and the exchange's record of who owns what is updated. The gap between trade date and that final exchange of value is the settlement cycle, and in Nigeria that gap has now shrunk twice in under a year. My view is that this matters more for active traders than for buy-and-hold investors, because it changes how fast money and shares actually become usable again after a trade.

It's easy to assume the Nigerian Exchange runs like one continuous block from the opening bell to the closing bell. It doesn't. NGX's trading day, which now runs from 9:00am to 4:00pm, is built from several distinct phases, not one long session, and the phase that sets the number reported as "today's close" is not the last trade of the day. Ignore that phase and you are missing the part of the session that actually sets the reference price used for indices and portfolio valuations the next morning.