What is a liquidation in crypto? A plain guide to forced selling

A liquidation is the forced closing of a trade that was opened with borrowed money. When your losses eat through the collateral backing the position, the exchange sells it to repay the loan. You do not get asked first. It happens on its own, often in seconds, and in crypto it can hit thousands of traders in the same minute.

Kraken, one of the larger exchanges, puts it plainly. A liquidation is the forced closure of a margin position by the exchange when losses exceed acceptable limits. That is the whole idea. Borrowed money has to be paid back, and the lender will not wait for a losing bet to come good.

How a liquidation works

Start with the money. To trade with leverage you put down a deposit, called margin, and borrow the rest. A $1,000 deposit at 5x leverage controls a $5,000 position. That deposit is your collateral, and your losses come out of it first. The borrowed portion comes from the exchange or, on many venues, from other traders who lend it for a fee.

Every leveraged position has a maintenance margin. Kraken defines it as the minimum account equity required to keep a margin position open. Fall below that level and you get a margin call, a warning that your buffer is nearly spent. Miss it, or ignore it, and the trade reaches its liquidation price, the point where the exchange closes it to stop the loss from spreading. No warning. No second chance. The system acts on its own.

Both sides of a trade can be liquidated. A long bet, that the price will rise, gets closed when the price drops to its liquidation level. A short bet, that the price will fall, gets closed when the price climbs instead. In a sharp rally the shorts get squeezed. In a sell-off the longs go first. Either way the trigger is the same. The collateral can no longer cover the loss, so the exchange steps in and ends the trade.

Leverage, margin and the liquidation price

Leverage is the multiplier. At 10x, a $10,000 deposit controls $100,000 of Bitcoin. The upside looks great. The downside is the catch. At 100x, a move of about 1 percent against you erases the entire deposit. Crypto venues allow ratios that would be unthinkable in regulated stock markets, 10x, 20x, 50x, even 100x on some offshore platforms. Products like perpetual futures, now reaching retail users in some markets, put this kind of leverage within easy reach.

Higher leverage drags your liquidation price closer to the price you entered at. A small wobble becomes a total loss. Picture putting $100 down to control $10,000 of something. A tiny dip and your $100 is gone, even though the asset barely moved. That is why margin trading carries a far higher risk of liquidation than simply buying the coin and holding it.

This cuts both ways, in calm markets and wild ones. A trader at low leverage can sit through an ordinary pullback and wait for the trade to recover. A trader at high leverage on the same coin, in the same pullback, may already be closed out at a loss before the price turns back. Same view, same coin, very different result. The gap between them is leverage, and it is why two people can be right about direction and still end the week far apart.

Why liquidations snowball into cascades

One liquidation on its own is just one trader's bad day. The trouble is what forced selling does to the price. When the exchange closes a long position, it sells the coin into the market, and that selling nudges the price down. A lower price drags other positions toward their own liquidation levels. They get sold too. Prices fall further.

CoinGecko sums up the loop in a short chain: forced selling, lower prices, more liquidations, more forced selling. Each closed position becomes fuel for the next. When a market is already crowded with leveraged bets, the chain can move faster than any person can react. That is a cascade, and it is why a modest dip in crypto can turn into a rout inside a few minutes.

Traders watch a figure called open interest for this reason. It measures how much borrowed money is riding on a market at once. When open interest climbs while the price stalls, a large pool of positions is sitting near its limits, and a single sharp move can set the whole pile off. The bigger the stack of leverage, the harder the fall when it goes.

A cascade also drags in people who never touched leverage. When forced selling slams the price down, every holder of that coin sees the value drop, including those who only bought and held. The leveraged traders light the fire. The rest of the market feels the heat. That is why a wave of liquidations can matter to someone who would never open a margin trade, and why big cascades tend to show up as a sudden stomach-drop on an ordinary price chart.

October 10, 2025: the biggest cascade on record

The clearest case came on Friday, October 10, 2025. Over about 24 hours, more than $19 billion in leveraged positions were force-closed across the market, according to CoinGecko's account of the day. Roughly 70 percent of that landed in one 40-minute window, between 20:50 and 21:30 UTC. At 21:15 UTC, $3.21 billion was wiped out in 60 seconds.

What set it off was not bad news about any single coin. It began earlier that afternoon with a tariff announcement, then tipped into a self-feeding sell-off once the first large positions went. Exchanges could not find buyers fast enough for all the forced sales, so some fell back on auto-deleveraging, closing winning traders' positions to cover the losing side. How many wallets were drained that night is not public. Exchanges rarely release the full set, so the headline total is almost certainly a floor rather than a ceiling.

What a liquidation is not

A liquidation is not the exchange picking on you. The platform lent the money, or matched you with someone who did, and that loan has to be protected. Closing your trade is how the lender gets paid back before the loss grows. It is also not the same thing as the coin going to zero. Bitcoin was still worth tens of thousands of dollars throughout the October 2025 cascade. The traders who lost everything were not wrong that Bitcoin had value. They were wrong about timing, and leverage made the timing fatal.

Isolated margin versus cross margin

How much a liquidation costs you depends partly on a setting many beginners never check. Isolated margin fences off one position. If it is liquidated, only the collateral you assigned to that trade is lost, and the rest of your account stays put. Cross margin works the other way. It pools your whole balance as backing, which can keep a position alive through a bigger swing, but a severe move can take the entire account with it.

Neither mode is safer in every case. Isolated margin caps the damage but liquidates sooner. Cross margin buys more room and risks everything. Traders who grasp the trade-off choose it per position. Those who do not often learn which mode they were on only after the balance reads zero.

How traders try to stay clear of liquidation

No trick removes the risk. Leverage and liquidation arrive together. A few habits do lower the odds of a forced close, though.

Use less leverage, because a position at 2x or 3x can absorb a far bigger swing than one at 50x before it hits its liquidation price. Keep spare collateral in the account so a margin call can be met by adding funds instead of losing the trade. Set a stop-loss order to exit on your own terms, at a price you picked, rather than leaving the timing to the exchange. And check your maintenance margin before you open a trade, not after.

For most people the simplest protection is to skip leverage altogether. Buying and holding the coin, or taking exposure through a spot product like a Bitcoin ETF, comes with no liquidation price at all. The value can still fall, and fall hard, but no exchange will close the position out from under you. That is the plain trade-off. Leverage can multiply a gain, and it can also end a position in one bad minute, with no say from you.