What Is a Market Maker?
Market makers keep markets running. Understanding how they operate — and how they profit — explains many of the price behaviors that confuse new traders.
Basics · July 15, 2026 · 5 min read
A market maker is a firm or individual that continuously quotes both buy and sell prices for an asset, standing ready to trade at those prices with any market participant. They provide liquidity — ensuring there is always someone willing to buy when you want to sell and sell when you want to buy. Without market makers, markets would be far less liquid.
How Market Makers Make Money
Market makers profit from the bid-ask spread — the gap between the price they buy at and the price they sell at. If the bid is $49.99 and the ask is $50.01, the market maker buys from sellers at $49.99 and sells to buyers at $50.01, pocketing $0.02 per share. They don't need to predict market direction — they profit from volume of transactions and management of inventory risk.
Market Makers vs. ECNs
Today, most stock and forex trading routes through ECNs (Electronic Communication Networks), which match buyers and sellers directly without a market maker, resulting in tighter spreads. However, market makers still dominate options markets, OTC products, and many retail forex brokers — who act as the counterparty to their customers' trades.
Practical Implications for Traders
Understanding market makers matters practically: (1) Spreads widen during low-liquidity periods and around news events. (2) In options, market makers hedge their delta exposure by trading the underlying — large options positions can influence stock price behavior. (3) In retail forex, if your broker is a market maker, they profit when you lose — a conflict of interest worth understanding when choosing a broker.
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