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Liquidations explained

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A liquidation is a forced close of a leveraged position when its margin no longer meets the venue’s requirements. The trader does not choose the exit. The exchange or broker’s engine does, according to published (and sometimes changed) rules, in order to keep the account from going further below the required collateral.

This matters in crypto futures and perpetual swaps because leverage is widely offered and because prices can move several percent in seconds. It also appears in margin-lending and in some contracts for difference. The details differ by venue. Always read the venue’s own documentation; this article is a general explanation, not a description of any one platform, and not financial advice.

Isolated margin, cross margin, and maintenance

Most venues distinguish at least two ideas:

• Initial margin is the collateral required to open a position of a given size and leverage.
• Maintenance margin is the lower amount that must remain to keep the position open.

If mark-to-market losses reduce the margin balance below the maintenance level, the position is eligible for liquidation. Some venues first try a partial liquidation or a margin call; others close the position more abruptly.

Isolated margin assigns a chosen amount of collateral to one position. If that pocket is exhausted, that position can be liquidated without automatically draining the rest of the account (other positions and unused balances may still be affected by rules you should check). Cross margin pools collateral across positions. That can absorb a loss in one trade with equity from another, but it also means a single bad position can threaten the pool.

Leverage is just a way of expressing how large a position is relative to the margin posted. Ten times leverage on an isolated $1,000 margin is a $10,000 notional position. A 10% adverse move on the notional is $1,000 — the entire isolated margin — before fees and funding. Liquidation usually arrives before a full 100% loss of maintenance margin, because the venue keeps a buffer.

Estimated liquidation price

Many interfaces show an estimated liquidation price. Treat it as an estimate. It typically depends on:

• entry price and position size,
• margin posted and whether the mode is isolated or cross,
• maintenance-margin rates, which can vary by notional tier,
• fees, funding payments, and other charges that change the balance,
• the mark price or index the venue uses, which may differ from the last traded price.

Because several of those inputs move, the number on the screen can change while you watch. A stop order you place is not the same thing as the liquidation engine. A stop is your order, if it can be filled. Liquidation is the venue’s process, often at whatever the engine can get, which may be worse than the estimate. Our stop-loss guide covers the difference in more detail.

Why liquidations can cascade

When a large long is liquidated, the engine sells (or takes the other side of) that exposure. In a thin book, that selling pushes the mark price lower, which can trigger the next cluster of long liquidations, and so on. The same can happen in reverse when shorts are forced to buy back.

This is one reason you will see sudden wicks on highly leveraged contracts that do not always appear to the same extent on the underlying spot market. It is also why “liquidation maps” or heatmaps of clustered leverage are popular: they are attempts to guess where a lot of forced flow might sit. Those maps are estimates built from incomplete public data. They are not a schedule of future prices.

Exchange insurance funds, auto-deleveraging (ADL), and backstop liquidity providers are mechanisms some venues use when a liquidation cannot be filled cleanly. Auto-deleveraging can close winning opposing positions to cover a shortfall. That is a reminder that leveraged venues have rules that can affect even traders who think they are on the “right” side.

What traders watch — and what they should not infer

People watch:

• Open interest, the outstanding size of contracts, which can rise or fall as leverage is added or removed,
• Funding rates on perpetuals, which can hint at crowded positioning (see our funding-rate guide),
• Reported liquidation totals, such as the public streams some exchanges publish,
• large, fast wicks during thin hours or around news.

None of these tells you, by itself, what price will do next. A spike in liquidations can coincide with the end of a move or with the middle of one. High open interest can persist for a long time.

Practical cautions

If you use leveraged products at all, understand the margin mode, the maintenance schedule, and what happens if the venue’s mark price jumps across your estimated liquidation level in one print. Reduce the chance of a forced exit being your only exit: that is a process question (position size, margin buffer, and whether you can be at the screen), not a prediction.

Keep in mind that:

• Liquidation can happen faster than you can cancel or add margin, especially during an outage.
• Fees and funding change the math from the simple “price × leverage” cartoon.
• A demo or paper-trading box may not reproduce liquidation engine behaviour.

For related reading, see leverage and margin, risk management, and the live liquidations page on this site, which displays public forced-order data from one major futures venue when the connection is available.

This article is for information only and is not financial, investment, or trading advice. Leveraged trading can result in the loss of all capital, and in some cases more than the margin on deposit.