Short Liquidation
A short liquidation is the automatic closing of a leveraged short position when the price rises far enough that the remaining margin falls below the exchange's minimum. The exchange buys back the position for you, and most of your margin is lost.
How a short gets liquidated
A short position profits when the price falls. On a crypto derivatives exchange you open it with margin, a deposit that backs the trade, and leverage lets that deposit control a larger position. Every rise in the price is a loss that eats into the margin.
Once the margin drops below the maintenance margin, the exchange's liquidation engine closes the short. Closing a short means buying, so the engine sends a market buy order. The trigger is usually the mark price, a fair-value price derived from several spot markets, not the last traded price on that one exchange.
A worked example
Say you post 1,000 USDT and open a 10x short on bitcoin at 50,000, a position of 0.2 BTC worth 10,000 USDT. Each 1,000 rise in the price costs you 200 USDT.
A rise of 10% to 55,000 would consume the whole 1,000 USDT. With a maintenance margin of 0.5%, the liquidation comes slightly earlier, around 54,700. The short is bought back, you lose roughly 950 USDT, and a liquidation fee or insurance-fund transfer usually takes most of the remainder. If bitcoin then falls to 45,000, the trade you were right about no longer exists.
Short liquidations and short squeezes
Because every short liquidation is a forced buy, a wave of them pushes the price up at the worst moment for other shorts. Their liquidation prices are hit next, which creates more forced buying. This feedback loop is a short squeeze. It tends to be most violent when many traders are short at once, which often shows up as negative funding rates, meaning shorts are paying longs to keep their positions open on perpetual futures.
Risks specific to shorting
A price can only fall to zero, but it has no upper limit, so a short's possible loss is open-ended until liquidation stops it. Small, thinly traded coins can jump 30% or more in minutes, far beyond what a 5x or 10x short can absorb. Negative funding also means you pay a fee every funding period while you wait.
Traders who survive shorting usually keep leverage low, size positions small, use isolated margin and avoid shorting illiquid assets. A stop-loss placed before the liquidation price helps, but it can slip in a sudden spike.
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Frequently asked questions
What does short liquidation mean?
It means a leveraged bet on falling prices was forcibly closed because the price rose to the position's liquidation price. The exchange bought back the position with what was left of the margin.
Do short liquidations push the price up?
Yes, they can. Each one is executed as a market buy order, and a large cluster of them can add sharp upward pressure in a short time.
Why are shorts riskier than longs?
A long can lose at most what the asset is worth, because the price cannot go below zero. A rising price has no ceiling, so a short can move against you much further and faster.
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