latency
Latency is the tiny delay between an order leaving your hand and reaching the market, and in fast trading that delay can decide who wins the price.
In plain English
"Why did my order fill at ₦52 when I clicked it at ₦50?" Tunde asked his broker friend, staring at his phone in traffic on Third Mainland Bridge. "Because by the time your click travelled from your phone to your app's server to the exchange, the price had already moved," his friend replied. "That gap in time, that's latency."
Latency is simply the delay between an instruction and its execution. Every action on the internet takes some time to travel, whether it is a WhatsApp voice note or a buy order for shares. In everyday life a second or two means nothing. In trading, especially fast trading, that second can be the difference between buying at a good price and buying after everyone else already did.
On the Nigerian Exchange, latency matters most to big players like market makers and algorithmic traders who place thousands of orders and need every millisecond. For an ordinary retail investor buying MTN Nigeria shares through an app, latency usually just means your screen price and your fill price differ slightly, especially when the market is moving fast. It rarely wipes you out, but it explains those small surprises.
In London, this idea grew into a whole industry. Firms pay huge sums to place their computers physically closer to the London Stock Exchange's servers, because even the length of the cable can add microseconds of delay, and microseconds decide who gets the best price first.
For someone abroad sending money home, a gentler version of latency shows up too. Your transfer app might show the rate at the moment you tap send, but the actual naira credited to your mother's account depends on when the transfer actually processes. The gap between the quote and the settlement is its own small latency story.
You place an order to buy shares at ₦50 on your trading app. By the time the order reaches the exchange, the price has moved to ₦50.30, and that is where you get filled. The ₦0.30 difference is a small, real cost of latency.
Questions people ask
Does latency affect ordinary retail investors in Nigeria?
A little, but not dramatically. Most retail investors hold shares for weeks or months, so a few seconds of delay barely matters. Latency becomes serious mainly for high frequency traders and market makers who trade constantly and profit from tiny price differences.
Can latency make me lose money?
It can cause small differences between the price you saw and the price you got, especially during volatile moments. It is rarely the main reason for big losses, but it does add up if you trade often.
Is low latency only important for big trading firms?
Mostly, yes. Firms doing statistical arbitrage or automated strategies invest heavily in reducing latency because their profit depends on speed. Everyday investors benefit more from patience and good research than from chasing speed.
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