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What is liquidity?
Liquidity is how easily an asset can be bought or sold at a fair market price when you want to. A liquid asset has many buyers and sellers, so trades move the price little; an illiquid one has few.
What it means for you
A coin can show a price and still be hard to sell. In an illiquid market FINRA warns you may have to accept a lower price, or not be able to sell at all if no one will buy at a price you accept. Market liquidity is different from a DeFi liquidity pool, though a small pool means thin liquidity.
A common mistake: “The coin has a price on every site, so I can sell my whole holding at that price.”
In fact: A shown price is usually the last trade or a midpoint. What a sale returns depends on how many buyers are waiting and at what prices; in an illiquid market FINRA warns you may get less or be unable to sell.
How it works
FINRA ties liquidity to how many participants trade an asset and at what prices. More trading volume means more buyers and sellers waiting, a narrower bid-ask spread, and more depth, so a sale moves the price less. With few participants, a seller has to accept lower bids to find a buyer, and executing a large order quickly becomes difficult. In the extreme, no one bids at a price the seller accepts, and the asset cannot be sold at all. Liquidity is not fixed: it can thin out exactly when many holders try to sell at once.
Source: FINRA: Understanding Market Liquidity and Your Investments · checked 4 October 2026
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Educational content, not financial advice. Written by hand and checked against the source named above. Something wrong? Tell us and we reply within two business days.