Market making helps keep financial markets liquid and active. Learn what market making is, how market makers operate and how they earn from the bid-ask spread.
Updated August 21, 2026
Market making helps keep financial markets liquid and active. Learn what market making is, how market makers operate and how they earn from the bid-ask spread.
Every time you place a trade and it fills instantly, someone, or something, was on the other side ready to take it. That "someone" is very often a market maker, and their quiet, constant presence is one of the most important and least understood features of modern financial markets. Without market makers, you couldn't reliably buy or sell when you wanted to; you'd have to wait for another trader who happened to want the exact opposite of your trade at the exact same moment. Market makers solve that problem, and in doing so they shape the spreads you pay, the liquidity you rely on, and the smoothness of your execution. Understanding how they work makes you a more informed trader in every market.
This guide explains what market making is, how market makers actually work, how they make money, why markets need them, and how all of this connects to your real experience as a trader, particularly the spread you pay and the liquidity behind your trades. The recurring theme is that market makers are the invisible plumbing of the markets: providers of liquidity who profit from the bid-ask spread in exchange for the service and risk of always being ready to trade. Skyriss operates in markets underpinned by this liquidity infrastructure, and understanding it helps you understand your own trading conditions. This article is educational and does not constitute investment advice
For readers who want the core idea immediately, here it is.
A market maker is a firm or individual that continuously quotes both a buy price (the bid) and a sell price (the ask) for an instrument, and commits to trading at those prices on demand. They stand ready on both sides of the market at once, so anyone who wants to buy or sell can do so immediately, without waiting for a matching counterparty.
How they make money: the bid-ask spread. The market maker buys at the lower bid price and sells at the higher ask price, keeping the small difference. On any single trade the profit is tiny, but repeated across enormous volume, it becomes a business.
Why they matter to you: market makers provide the liquidity that lets you trade instantly, and the spread you pay is essentially their compensation for that service and for the risk they take holding inventory. In liquid markets with lots of competing market makers, spreads are tight; in illiquid ones, they're wider.
The rest of this guide explains how they actually work, why markets need them, and how this connects to your trading conditions.
Market making is the business of continuously quoting both a bid and an ask on a financial instrument so that others can trade on demand. A market maker is the party doing this, standing ready to buy from sellers and sell to buyers at all times during trading hours, absorbing the temporary imbalances between the two so the market stays continuous and functional.
The simplest analogy is a used-car dealer. The dealer stands ready to buy your car at one price and sell a similar car at a slightly higher price, and the markup is the price of instant service, you don't have to find a private buyer or seller yourself, the dealer is always there. A market maker does the same for financial instruments: they'll buy from you now at the bid, or sell to you now at the ask, and the spread between those two prices is their equivalent of the dealer's markup.
The defining feature is this constant, two-sided availability. A market maker commits to quoting both sides simultaneously and honouring those quotes, which is what allows other participants to trade without significant delay or without needing to find a matching counterparty themselves. This continuous readiness is the service market makers provide, and it's the foundation of liquid, orderly markets.
The mechanics are elegant once you see them, and they revolve around the bid, the ask, and the management of inventory.
A market maker posts two prices: the bid, the price at which they'll buy, and the ask (or offer), the slightly higher price at which they'll sell. When a seller wants to sell, they trade at the market maker's bid; when a buyer wants to buy, they trade at the ask. The market maker is therefore constantly buying at the bid and selling at the ask, over and over. In an idealised example, a market maker might quote a bid of $10.00 and an ask of $10.05, buy 100 shares from a seller at $10.00, sell 100 shares to a buyer at $10.05, and end up flat again having kept the five-cent-per-share difference. Repeat that at scale, and the pennies become a substantial business.
Here's the crucial complication that makes market making a genuine skill rather than free money. Between buying and selling, the market maker holds inventory, a position in the instrument, and that position is exposed to price movement. If the price moves against their inventory before they can offload it, they take a loss. So a market maker isn't just collecting spreads passively; they're constantly managing the risk of the positions they accumulate, adjusting their quotes to encourage trades that reduce their exposure and hedging their inventory to protect against adverse moves.
This is why market making is fundamentally a risk-management business, not a prediction business. The market maker doesn't need to predict where prices are going; they need to capture the spread consistently while managing their inventory risk so that spread income exceeds the losses from adverse price movements and the costs of operating. When they manage that balance well, they profit; when inventory risk overwhelms spread income, they lose. This distinction, risk management over prediction, is central to understanding what market makers actually do.
Almost entirely electronically, at extraordinary speed. In 2026, major market making is dominated by automated systems, algorithms that quote thousands of instruments simultaneously, updating their prices multiple times per second, sometimes thousands of times per second, in response to changing conditions. These algorithms ingest real-time market data, run it through pricing models, output bid and ask quotes, and adjust continuously as trades execute and conditions shift, all in microseconds. The pace is far beyond human capability; on an active instrument, quotes can update hundreds of thousands of times in a single session. Modern market making is a technology-and-risk business, where speed, sophisticated pricing, and efficient risk management determine who succeeds.
The primary answer is simple, but there are a few channels worth understanding.
The core revenue source is spread capture. Every time a market maker buys at the bid and sells at the ask, they capture the spread, and across enormous volume this is where most of their profit comes from. On highly liquid instruments the spread is tiny, sometimes a fraction of a cent, but the sheer volume of trades makes it add up. The spread is compensation for two things: the service of providing liquidity (always being ready to trade) and the risk of holding inventory that could move against them.
Beyond the spread, there are secondary sources. Some venues offer rebates to market makers for providing liquidity, adding to their revenue. And market makers gain an informational advantage from observing large volumes of order flow, which can inform their pricing, though this is more relevant in some markets than others. But the spread remains the heart of it: market makers are, first and foremost, businesses that earn the bid-ask spread at scale while managing the risk of doing so.
It's worth noting that market-making margins have compressed significantly over the years as competition and technology have intensified, narrowing spreads. The firms that remain profitable tend to be those with scale, superior technology, and efficient risk management, which is why modern market making is dominated by sophisticated, highly capitalised electronic firms.
Understanding their function explains why they're so essential to how markets work.
The fundamental problem market makers solve is the coordination of buyers and sellers. Without them, trading would depend on a buyer and a seller wanting to trade the same instrument, in the same quantity, at the same moment, which happens far less reliably than you'd need for a smooth market. Market makers remove this friction by always being available on both sides, so you can trade on demand rather than waiting for a natural counterparty.
This delivers several benefits. It provides liquidity, the ability to buy or sell quickly without having to wait, which is essential for functional markets. It supports continuous, orderly trading by absorbing temporary imbalances between buyers and sellers, helping to stabilise the market rather than letting prices lurch every time supply and demand fall briefly out of sync. And it contributes to price discovery, the process by which markets arrive at fair prices, since market makers' continuous quotes reflect and communicate the current state of supply and demand.
The result is that market makers are, in a real sense, the infrastructure that makes trading practical. The tight spreads and instant execution that traders take for granted in liquid markets exist substantially because market makers are competing to provide liquidity. When you can enter or exit a position instantly at a fair price, you're benefiting directly from their presence.
Here's where market making connects directly to your experience, because it explains something you encounter on every single trade: the spread.
The bid-ask spread you pay when trading is fundamentally shaped by market making. When you open a position, you buy at the ask and later sell at the bid (or vice versa), and that spread is, in essence, the market maker's compensation for providing the liquidity you're using. This is why spreads behave the way they do. In highly liquid markets with many competing market makers, such as major currency pairs, spreads tend to be narrow, because competition drives them down and the risk of holding inventory is lower. In less liquid markets, or during volatile conditions when inventory risk spikes, spreads widen to reflect the greater risk market makers are taking. So the spread you see isn't arbitrary, it reflects the liquidity and risk conditions that market makers are responding to.
This has practical implications. It's part of why trading major, liquid instruments generally costs less in spread terms than trading obscure or volatile ones, and why spreads can widen during news events or illiquid periods, when market makers widen their quotes to protect against sharp moves. Understanding this helps you interpret your trading costs and time your activity sensibly. The liquidity behind a platform, ultimately sourced from market makers and liquidity providers, directly affects the spreads and execution you experience, which is why the quality of a broker's liquidity access matters. Skyriss operates in markets underpinned by this liquidity infrastructure, and a trader's real conditions, spreads and execution, are shaped by how well that liquidity is accessed.
This is a nuance worth understanding honestly. In some models, a broker itself acts as a market maker, becoming the counterparty to a client's trades rather than passing them straight to an external market. This is a legitimate and common model, but it can carry a potential conflict of interest, because if the broker is the counterparty, it may benefit when a client's trade loses. This is precisely why regulation, transparency, and execution quality matter so much, and why traders should understand their broker's model and verify its regulatory standing. The key point for you is to focus on execution quality and fair conditions, and to choose a regulated, transparent broker where these are prioritised, rather than assuming any single model is inherently good or bad. Understanding that market making can happen at the broker level, not just in the wider market, helps you ask the right questions about how your trades are actually handled.
A market maker is a firm or individual that continuously quotes both a bid (buy) price and an ask (sell) price for an instrument, committing to trade at those prices on demand. They provide liquidity by always being ready to buy and sell, so other participants can trade without waiting for a matching counterparty.
Primarily by capturing the bid-ask spread, buying at the lower bid and selling at the higher ask, repeated across enormous volume. On any single trade the profit is small, but at scale it becomes a business. Secondary sources include venue rebates and informational advantages from observing order flow.
They post two-sided quotes and trade against incoming orders, buying at the bid and selling at the ask. Between trades they hold inventory exposed to price risk, so they constantly manage that risk by adjusting quotes and hedging. In 2026 this is done almost entirely by algorithms quoting thousands of instruments in microseconds.
Because without them, trading would depend on buyers and sellers wanting to trade the same instrument at the same moment, which is unreliable. Market makers provide liquidity and continuous, orderly trading by always being available on both sides, absorbing temporary imbalances and enabling instant execution at fair prices.
The bid-ask spread you pay is essentially the market maker's compensation for providing liquidity and bearing inventory risk. In liquid markets with strong competition, spreads are narrow; in illiquid or volatile conditions, spreads widen to reflect greater risk. So the spread reflects the liquidity and risk conditions market makers respond to.
No. Market making is fundamentally a risk-management business, not a prediction business. Market makers don't need to predict price direction; they aim to capture the spread consistently while managing the inventory risk of the positions they accumulate, so that spread income exceeds losses from adverse moves and operating costs.
It's a broker that acts as the counterparty to its clients' trades, effectively making a market for them, rather than routing orders to an external market. This is a legitimate model but can carry a potential conflict of interest, which is why regulation, transparency, and execution quality are important considerations when choosing a broker.
Generally beneficial, because they provide the liquidity that lets you trade instantly at competitive spreads, which is essential for functional markets. The spread is the cost of that service. What matters most for traders is fair execution and transparent conditions, which is why a regulated, transparent broker environment is important.
Market making is one of those things that operates constantly in the background yet shapes almost everything about your trading experience. A market maker is simply a party that stands ready to buy and sell at all times, quoting a bid and an ask, providing the liquidity that lets everyone else trade on demand. They earn the bid-ask spread as compensation for that service and for the inventory risk they carry, and in 2026 they do it electronically, at machine speed, across thousands of instruments at once. It's fundamentally a risk-management business, not a fortune-telling one, and it's the invisible infrastructure that makes instant, orderly trading possible.
For you as a trader, the value in understanding market making is that it demystifies the spread and the liquidity you encounter on every trade. The spread isn't an arbitrary charge; it's the market maker's compensation, shaped by competition, liquidity, and risk, which is why liquid markets have tight spreads and volatile or obscure ones have wider ones. Knowing this helps you interpret your costs, understand why spreads widen during volatility, and appreciate why the liquidity behind your platform genuinely matters to your execution.
That liquidity infrastructure underpins the markets Skyriss operates in, and a trader's real conditions, the spreads they pay and the execution they receive, are shaped by how well that liquidity is accessed within a transparent, regulated environment. Understanding market making won't change your strategy, but it will make you a more informed participant who understands what's happening on the other side of every trade. And in trading, understanding the machinery you're operating within is always part of trading with your eyes open. This article is for educational purposes only and does not constitute investment advice. Trading involves significant risk.
