Markets

Market Maker

A firm or individual that provides liquidity by continuously quoting buy and sell prices for securities.

Definition

A market maker is a firm or individual that actively quotes two-sided markets in a particular security, providing bids (buy prices) and asks (sell prices) along with the market size of each. Market makers profit from the bid-ask spread — the difference between the price they buy at and the price they sell at. They provide essential liquidity to financial markets, ensuring that buyers and sellers can always find a counterparty. Major market makers include Citadel Securities, Virtu Financial, and Jane Street. On the NYSE, designated market makers (DMMs) are responsible for maintaining fair and orderly markets in assigned stocks. In crypto, automated market makers (AMMs) like Uniswap use algorithms and liquidity pools instead of traditional order books.