This is a lesson from charliedesk Classroom. It isn't a market report, but an explanation of the mechanics you'll then read on your own. You can also find the basic term in our glossary: liquidation.
What is a liquidation, exactly?
A liquidation is the forced closing of a leveraged position, which happens when the value of your collateral drops below the level an exchange or protocol requires to keep the position open.
Let's show it with numbers. Say you have 1,000 USD of collateral and open a long position with 10x leverage, meaning 10,000 USD of exposure. If the exchange requires a maintenance margin of, for example, 0.5%, that means as soon as your loss eats up almost all of your collateral, the position closes automatically.
At 10x leverage, a price move of roughly 10% against you is enough for the loss to match your 1,000 USD of collateral. At that moment the exchange engine sells your position (for a long) or buys it back (for a short) to prevent you from going negative. You don't decide this. The price and predefined rules decide it.
Why doesn't a liquidation stay confined to one account?
The problem is that a liquidation isn't a passive accounting entry. It's a real market order.
When your long gets liquidated, the system has to sell on the market. That means a sell order, which by itself pushes the price down. One small account won't move the market. But imagine thousands of longs have their liquidation price near the same level, say around 60,000 USD for BTC.
As soon as the price crosses that level, the first wave of forced selling triggers. That selling knocks the price even lower, which brings it to the liquidation prices of the next group of positions, which also have to close, and those push the price lower still. This is called a cascade (liquidation cascade).
It's a feedback loop: liquidation, price move, more liquidations. That's why a relatively small initial move can turn into a sharp drop or a sudden spike within minutes.
Why do liquidations cluster at the same levels?
Clustering isn't a coincidence. It happens because people think and trade in similar ways.
- Round numbers. Many positions are opened at psychologically prominent levels (60,000, 65,000, 70,000 USD).
- The same leverage. Popular choices like 10x, 25x, or 50x mean that large groups of positions have their liquidation price at roughly the same distance from the entry.
- A recent visible level. When the market holds above a certain price for a while, longs pile up below it and their liquidation prices concentrate just underneath it.
The more positions gather in one price band, the more fuel for a cascade sits there.
So what does a liquidation map really show?
A liquidation map is a visualization of where, by estimate, positions are stacked that would be liquidated if the price reached a given level. It's usually a chart with "piles" at certain prices.
Now the important part, which often gets confused:
- It's not a forecast. The map doesn't say the price will go there. It only says: if it got there, here's an estimate of what would happen.
- It's an estimate, not a fact. Maps are calculated from open interest and leverage models. Nobody sees the exact positions of individual accounts publicly, so the height of the "piles" is an approximation.
- The data only covers what's visible. Most maps cover only some derivatives exchanges. Positions outside them (other exchanges, DeFi, OTC) are missing from the map.
- The map changes on its own. As soon as positions close or new ones open, the terrain gets redrawn.
So the correct reading is: "Here's a concentration of positions that are vulnerable to a move in this direction." Not: "The price will go here."
What's the difference between long and short liquidations?
It depends on the direction of the forced orders.
| Situation | Who gets liquidated | What order the system sends | Short-term price pressure |
|---|---|---|---|
| Price drops sharply | Longs | Sell | Down |
| Price rises sharply | Shorts | Buy back | Up |
That's why you hear terms like "short squeeze" (a cascade of short liquidations drives the price up) and "long squeeze" or "long liquidation cascade" (the opposite direction).
Why do big liquidation days often look like a needle on the chart?
A cascade is fast because it's automatic. Nobody waits, nobody deliberates. When the order books empty out for a moment, forced orders pass through thin liquidity and the price jumps far beyond the "fair" level, after which it often snaps back quickly. Hence those characteristic long candle wicks.
That's also why the biggest cascades tend not to happen during main trading hours, but in moments of lower liquidity, when the same volume of forced orders moves the price more.
What you should now be able to do
After this lesson you should be able to:
- explain why a liquidation isn't a punishment from the exchange, but an automatic close following predefined margin rules,
- describe the loop of liquidation, price move, more liquidations that forms a cascade,
- say why liquidations cluster (round numbers, the same leverage, visible levels),
- and, above all, read a liquidation map as an estimate of the concentration of vulnerable positions, not as a price forecast.
What remains uncertain
Let's be honest about the limits:
- We don't see the exact positions. Public maps and liquidation figures are estimates and tend to be incomplete, because exchanges report differently (and some report only part of the events).
- Causality is hard to prove. Just because a drop came after a level was touched doesn't automatically mean that particular pile of liquidations caused it. It could also have been triggered by news, a liquidity grab, or both at once.
- No level is guaranteed. The fact that a map shows a large concentration doesn't mean the price has to reach it, nor that a cascade will trigger.
Charliedesk never tells you what to buy or sell. This lesson gives you a tool for reading the phenomenon, not a signal to trade.