Bitcoin can drop thousands of dollars in minutes, often with no obvious news. One of the main reasons is the liquidation cascade, a chain reaction of forced selling that feeds on itself. If you trade crypto, or any market with leverage, it is worth understanding how it works.
What a liquidation is
Many crypto traders use leverage, borrowing money from an exchange to take a bigger position than their own cash would allow. To protect itself, the exchange sets a liquidation price. If the market moves far enough against the trader that their deposit, or margin, is nearly used up, the exchange automatically closes the position. For someone who bet on prices rising, that means a forced sale.
How the cascade happens
A cascade starts when prices fall far enough to trigger the first group of liquidations. Those forced sales push prices lower still, which triggers the next group of liquidations, which pushes prices down again. Because many traders use similar levels of leverage and place their positions around similar prices, liquidation levels tend to cluster. Once the first cluster is hit, the selling can accelerate quickly.
The same thing can happen in reverse. If many traders are betting on prices falling, a sharp rise can force them to buy back, driving prices higher. This is known as a short squeeze.
A simple example
Imagine thousands of traders are long Bitcoin with ten times leverage. A 10 per cent fall would wipe out their margin, so their liquidation prices sit roughly 10 per cent below where they bought. If Bitcoin falls 5 per cent on some news, traders with even higher leverage are liquidated first. Their forced selling pushes the price down further, towards the next cluster, and within an hour the drop has turned into 10 per cent and hundreds of millions of dollars of positions have been closed.
Why it matters
Liquidation cascades explain why crypto moves can look out of proportion to the news. They also explain why prices often bounce sharply after a cascade ends: once the leveraged positions have been flushed out, the forced selling stops. Traders can track this through public data on liquidations, open interest and funding rates, which show how much leverage is building up in the market.
How traders protect themselves
The simplest protection is to use little or no leverage. The lower your leverage, the further away your liquidation price, and the less likely you are to be caught in someone else’s cascade. Traders also size positions so that a sharp move does not wipe them out, and use stop losses they choose themselves rather than relying on the exchange to close them at the worst moment. Our guide to position sizing covers the basics.
Common mistakes
The biggest mistake is using high leverage because the exchange allows it. Another is buying immediately into a falling market during a cascade, before the forced selling has finished. A third is ignoring rising open interest and funding costs, which often signal that leverage is building and a flush is becoming more likely.
The bottom line
A liquidation cascade is forced selling that triggers more forced selling. It is a product of leverage, and the best defence is to keep leverage low and position sizes sensible. If you want to see how you handle risk in fast markets, the free Samuel & Co Trading Trader Assessment is a good next step.
