Liquidation in crypto is the forced closure of a leveraged position when the collateral backing it falls below the exchange's maintenance requirement. It is automatic, triggered by the venue's mark price rather than the last traded price, and it happens without the holder's involvement.
A single liquidation is an individual event. A liquidation cascade is what happens when many occur simultaneously: the forced closures are themselves market orders, that selling pushes prices further in the same direction, and the new price triggers the next tranche of positions. The loop runs until either the positions are exhausted or enough liquidity arrives to absorb the flow.
That mechanism produced the largest single liquidation event in crypto's history a year ago this month, and understanding it explains more about crypto price behaviour than most fundamental analysis does.
Liquidation at the Account Level
Briefly, because the account-level mechanics are covered in full in our walkthrough of how perpetual futures work.
A leveraged position is opened against posted collateral. Maintenance margin is the minimum equity required to keep it open. When adverse price movement erodes equity to that threshold, the venue's liquidation engine closes the position — in full or in stages — at whatever the order book offers.
Two features matter for what follows. The closure is a market order, not a limit order: it takes liquidity rather than providing it. And it is price-triggered and automatic, so positions with similar entry prices and similar leverage liquidate at similar levels, in clusters.
How One Liquidation Becomes Thousands
The Reflexive Loop
Forced closures are indifferent to price. A liquidation engine closing a long position sells, whatever the bid is.
That selling moves the price down. Lower prices push the next group of leveraged longs to their maintenance thresholds. Those positions liquidate, generating more forced selling, and the loop continues. Each round is mechanically caused by the previous one — which is why cascades move faster and further than the news that started them.
The industry shorthand is "long-killing-long." It works identically in reverse during a short squeeze.
What Makes It Worse
Three conditions turn a normal liquidation event into a cascade.
- Crowded positioning. When leverage is concentrated on one side at similar prices, liquidation levels cluster, and one tranche triggers the next.
- Withdrawn market makers. Liquidity providers widen or pull quotes when volatility spikes. Forced sellers then meet a thinner book, so each order moves the price further.
- Cross-asset collateral. When positions in one asset are collateralised by another, a fall in the collateral asset triggers liquidations in unrelated markets. This is the mechanism by which a shock in one corner spreads across everything at once.
The Largest Example: 10–11 October 2025
On Friday 10 October 2025, an unexpected announcement of a 100% tariff on Chinese imports hit markets late in the trading day. What followed was the largest liquidation event crypto has recorded.
| Reported liquidations, 24 hours | ~$19 billion (Coinglass) — see the data caveat below |
| Traders liquidated | ~1.6 million |
| Bitcoin move | From a Friday high near $122,600 to a low near $104,800, roughly −14% |
| Futures open interest | Fell from approximately $175 billion to $125 billion in under a day (Amberdata) |
| Scale vs prior events | Multiples larger than the February 2025 crash, the March 2020 selloff and the November 2022 FTX collapse |
| Exchange response | Auto-deleveraging activated on several venues; some avoided it through sufficient insurance fund reserves |
Two details are worth drawing out. Market makers withdrew as volatility spiked, producing the liquidity vacuum that made the move so violent — forced sellers arrived into a book that had thinned dramatically. And on some venues, exchange systems became overloaded, which meant traders could not cancel orders or add collateral during the window when doing so would have mattered most.
Why Cascades Are Liquidity Events, Not Revaluations
This is the most useful distinction in the whole subject.
A revaluation is the market changing its mind about what something is worth. A cascade is the market running out of people willing to take the other side at that moment. The price moves because forced sellers must sell now, not because anyone has concluded the asset is worth less.
The evidence is in the recovery. Much of the October 2025 decline reversed within days, which is characteristic: prices driven by forced flow tend to retrace once the flow stops, while prices driven by genuine reassessment generally do not.
For anyone operating in these markets the practical implication is not "cascades are irrational and can be ignored." It is that a position which would have been fine on the fundamentals can still be destroyed by a liquidity event, because liquidation engines do not wait for the recovery.
The Data Problem: Reported Liquidations Are Understated
Published liquidation totals are systematically too low, and the reason is mundane.
Several major venues throttle their public liquidation feeds — reporting a limited number of liquidation events per second regardless of how many actually occur. Since liquidations arrive in bursts, precisely during the moments of interest, the throttling removes most of the data exactly when there is most of it.
After the October 2025 event, this became an open dispute. Hyperliquid co-founder Jeff Yan publicly argued that some centralised exchanges, citing Binance's own documentation on reporting one liquidation order per second, could be under-reporting by as much as 100× under burst conditions. Coinglass, the aggregator whose $19 billion figure was quoted everywhere, noted itself that the true total was likely much higher. The Block's coverage of the dispute sets out both positions. Independent estimates of the real total have ranged widely above the reported figure.
The takeaway is not that the data is useless. It is that liquidation figures are a floor, directionally useful and quantitatively unreliable, and that anyone presenting them as precise is overstating what the feeds support.
What a Cascade Does to a Hedged Position
A delta-neutral position — long spot, short perpetual — has no directional exposure, so a violent price move is in principle irrelevant to it. In a cascade, three things can nonetheless go wrong, and they are worth stating plainly.
The legs can dislocate. The hedge assumes the perpetual and the spot price track each other. During a cascade they can separate briefly but substantially, and a position marked against those prices can show losses on one leg that the other has not yet offset.
Collateral can prove insufficient at the worst moment. The short perpetual leg requires margin. In a violent upward move — a short squeeze rather than a long cascade — that leg takes losses faster than collateral can be added, particularly if the venue's systems are degraded and additions cannot be processed.
Auto-deleveraging can close the hedge. If a venue's insurance fund is exhausted, ADL closes profitable positions on the opposite side of the bad debt. A correctly functioning hedge is exactly the kind of position that gets selected. The result is a position that is suddenly unhedged, in the middle of the most volatile conditions available.
None of this makes the strategy unsound. It does mean that collateral buffers, venue selection and position sizing are the parts that determine survival — not the elegance of the hedge. That is the substance of our delta-neutral strategy overview, and the venue-level questions are covered in our piece on what proof of reserves does and does not show.
Reducing Exposure to Forced Liquidation
For any leveraged position, the levers are limited and well understood:
- Lower leverage. The single largest determinant of how far price can move before the maintenance threshold is reached.
- Collateral buffer above the minimum. Maintenance margin is a floor, not a target. Operating close to it means a normal volatile day becomes a liquidation.
- Isolated margin where appropriate. Caps the loss from any one position rather than exposing the account.
- Avoid crowded levels. Positions clustered at round numbers and obvious technical levels liquidate together.
- Do not rely on adding collateral during stress. Venues degrade exactly when it matters. Any plan that depends on a top-up arriving during a cascade should be assumed to fail.
Frequently Asked Questions
What is liquidation in crypto?
The forced closure of a leveraged position when the collateral backing it falls below the exchange's maintenance margin requirement. It is automatic, triggered by the venue's mark price rather than the last traded price, and the position is closed at whatever the order book offers.
What is a liquidation cascade?
A self-reinforcing sequence in which forced closures generate market orders, that flow moves the price further in the same direction, and the new price triggers the next group of positions. Each round is caused by the previous one, which is why cascades move faster than the news that started them.
What is auto-deleveraging?
A last-resort mechanism used when an exchange's insurance fund cannot cover the shortfall from positions closed below their bankruptcy price. The venue force-closes profitable positions on the opposite side, typically ranking the highest-profit, highest-leverage accounts first. A correctly positioned trader can have a winning position closed without choosing to close it.
Why do liquidation totals differ between sources?
Because several major venues throttle their public liquidation feeds, reporting a limited number of events per second regardless of how many occur. Liquidations arrive in bursts, so the throttling removes most of the data during the periods of greatest activity. Published totals should be read as a floor rather than a measurement.
Can a market-neutral position be liquidated?
Yes. The hedge removes directional exposure but the short leg still requires margin at a venue. A sharp move against that leg, combined with insufficient collateral or degraded exchange systems, can trigger liquidation — and auto-deleveraging can close a hedge even when it is performing correctly.
Leverage Is the Common Factor
Liquidation is not a market phenomenon. It is a consequence of leverage meeting volatility, and everything distinctive about crypto price behaviour during stress — the speed, the overshoot, the rapid retracement — follows from how much leverage sits in the system and how automatically it is unwound.
The useful mental model is that a cascade is not the market deciding something. It is the market being unable to absorb forced flow for a period measured in hours. Positions that survive it are the ones that were sized for the possibility rather than for the average day.
This article is published for informational purposes and does not constitute investment advice or an offer to transact. Figures describing the October 2025 event are drawn from third-party aggregators whose reporting is acknowledged to be incomplete, and estimates of the true total vary widely. Leveraged positions can be closed automatically with loss of posted collateral. Capital is at risk.
This article is for information only and is not investment advice. Past performance does not guarantee future results.
