Explainers

Many arguments about technical indicators are not really about the indicator. They are about which of two incompatible ideas the person is using to read it: momentum, which says a move in motion tends to continue, or mean reversion, which says a move away from the average tends to snap back. The confusion that readers report with RSI, moving averages or volume spikes often comes from applying both ideas to the same chart without noticing the switch.

Average True Range measures how far a stock moves in a day, not which way it moves. That distinction matters: ATR is a volatility reading, not a trading signal. ATR tells you the size of a stock's typical swing. What you do with that information is a separate question.

A single candle on a chart shows you four numbers: the open, the high, the low and the close. That is all it shows. It does not tell you why the price moved, who was buying, or whether the move will continue. Treating one candle's shape as a signal on its own is closer to reading tea leaves than to reading a market, and the shape only starts to mean something once you put volume and the surrounding trend next to it.

It is tempting to read a touch of the upper Bollinger Band as "overbought" and a touch of the lower band as "oversold". That reading treats the bands as a directional signal. They are not built for that job. They are built to measure how much a price is moving, not which way it is going next.

Support and resistance levels get treated on Nigerian and South African trading forums as if they were fixed rules of physics: price hits ₦45 and bounces, so ₦45 is "support", full stop. That treatment is wrong, and it costs people money. A support or resistance level is a record of where buyers or sellers showed up in the past. It is a description, not a boundary drawn by a regulator or an exchange. Treating it as exact, down to the naira or the kobo, misreads what the chart is actually telling you.

MACD is easy to misread. "The MACD" sounds like one line, but it is built from three separate readings that each say something different. Get clear on what each one measures, and you stop treating a lagging signal as if it were a leading one.

Look at a price chart and you're looking at where a stock's last trade happened. That's all a price line tells you: the most recent number, nothing about how much conviction sat behind it. Volume at price fixes that blind spot. Instead of asking "what did it trade at just now," it asks "how much actually traded at each price level over time." Those are two different questions, and the second one tells you far more about what a stock's owners actually believe.

RSI measures speed, not direction. It compares the size of recent gains to the size of recent losses and turns that into a number between 0 and 100, nothing more mystical than that. A stock climbing fast on strong up days will push RSI high. A stock getting hammered will push it low. That's the whole calculation. It tells you how hot or cold the recent move has been, not where the price is going next.

A moving average doesn't forecast where a stock is headed next. It flattens the daily wobble in a price chart so the underlying trend is easier to read. That's its entire job, nothing more. On its own it tells you nothing about tomorrow's close; it tells you where price has already been, averaged out over a fixed stretch of trading days. Strip away that distinction and most other mistakes traders make with moving averages follow from it.

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.

A portfolio can rise in value and still leave you poorer than when you started. That is not a trick of accounting. It is what happens when the price of everything you'd buy with that money rises faster than the portfolio itself. The number on your statement is the nominal return, the percentage change in currency terms. The number that tells you whether you actually gained anything is the real return, the nominal figure adjusted for inflation over the same period. In a high-inflation economy, the second number is the one worth your attention, and the first one on its own can mislead you.

Compounding rewards patience more than it rewards precision. Most explanations of it start with the formula and lose the reader before the point lands. Start instead with two savers and watch what twenty extra years does that a better rate cannot.

Ask a new investor to describe risk and many will talk about missing out on gains. Ask about return and the answer comes fast: more is better. What beginners get wrong is not the upside. It is how badly, and how often, things can fall before they turn around. That gap, between the loss people picture and the loss that actually happens, is where many early investing mistakes come from.

Dividend season on the NGX runs on two separate mechanics that get lumped together in beginner conversation: the cash dividend and the bonus share. They are not the same thing, and the yield number everyone quotes tells you very little about either on its own.

Open an account with less money than you've mentally budgeted for this. That's the practical argument this guide makes, and the mechanics of how a Nigerian trading account gets set up back it up.