What is liquidity?
Liquidity means how easily something can be turned into money. For a stock it says how many people trade it every day: a liquid stock like Apple you can buy and sell in a second without moving the price; an illiquid small cap can take days to get rid of, and your own sale can push the price down. For you, liquidity means whether you have cash available — or whether everything is tied up in something that must be sold first.
Many trades = easy to buy and sell. Few trades = you can get stuck — or move the price yourself.
Liquid and illiquid stocks
In a liquid stock, thousands of buyers and sellers stand ready all day. If you want to sell for 5,000, there is always someone willing to buy at about the displayed price. In an illiquid stock, perhaps 20,000 changes hands in a whole day. If you want to sell for 5,000, you are a quarter of the day's market — and the buyers know it. You get a worse price, or you do not get sold at all.
Liquidity shows directly in the spread: liquid stocks have spreads under 0.1%, illiquid ones 1–5%. That is a cost every time you trade.
A worked example
You buy a small stock for 2,000 with a 3% spread. You have already lost 60 the second the trade goes through — the stock must rise 3% just for you to break even. If you sell on a day with almost no buyers, the loss can be bigger, because your own order pushes the price down. In a large stock with a 0.05% spread the loss was 1.
Your own liquidity
If all your money is in stocks and none on the account, you are illiquid — and then the next unexpected bill forces you to sell, whatever the price. That is why the first piece of advice is always a buffer of 2–3 months' expenses before stocks. It costs a little in lost return. It saves you from selling at the bottom.
The typical beginner's mistake
Buying an illiquid stock for a large amount with a market order. The order eats through the few sellers there are, and you end up paying far above the displayed price. Always use a limit order in small stocks — and buy in smaller portions.
How you see it in Kiggo
Kiggo shows the market cap on every stock — the biggest companies are usually also the most traded. Kiggo's ETF checklist shows the fund's size, which is the best guide to whether a fund is easy to trade. The spread itself you see in your bank's trading window.
Related terms
Frequently asked questions
How do I see whether a stock is liquid?
Look at the day's turnover (how much is traded) and the spread. If millions change hands daily and the spread is under 0.2%, it is liquid. If only a few hundred thousand trade and the spread is several percent, it is not.
Are ETFs liquid?
Large ETFs are very liquid — often more so than the stocks they own. Small, new ETFs can be thinly traded. The fund's size (over 100 million euro as a rule of thumb) is a good guide.
What does it mean that a market is illiquid?
That there are suddenly few buyers — for example in a crisis when everyone wants to sell at once. Spreads widen and prices fall more than the news can explain. That is why liquidity disappears exactly when you need it most.
Kiggo explains — Kiggo does not advise. We never tell you what to buy or sell, and key figures can only be compared between companies in the same industry. The decision is yours. Last updated 2026-09-23.
Written by Claus Frisch, founder of Kiggo. Not an adviser, not a bank — Kiggo explains, you decide.
