What is an insurance fund?
In a crypto exchange’s liquidation mechanism, an insurance fund is a pool used under defined rules to address eligible loss shortfalls. If available collateral cannot cover actual losses after liquidation, the fund can absorb the shortfall within its coverage rules, reducing the chance of those losses affecting other traders.
Which part of the loss does it cover?
It addresses losses beyond available collateral, not a refund of the liquidated trader’s lost margin. Such excess losses are commonly called a negative-equity shortfall.
For example, a hypothetical position has 100 USDT of collateral and a final closing loss of 105 USDT. Excluding other fees, 105 − 100 = 5 USDT remains uncovered. USDT is the denomination asset; this illustrates the shortfall, not any platform’s compensation promise.
If eligible under the fund’s rules, the fund absorbs the 5 USDT rather than returning the lost 100 USDT to the trader. Coverage, limits and negative-balance handling depend on product rules.
Why can a shortfall remain after liquidation?
Liquidation reduces or closes a position because of risk conditions such as insufficient collateral. The condition being met and closing being completed happen at different times. Handling usually starts when equity cannot meet ongoing requirements, but prices can move rapidly during execution or insufficient quantity may be available near the reference price.
Equity is collateral value including unrealized results. Even with equity remaining at the start, final loss can exceed collateral. In a simple model, the price exhausting collateral equity is the bankruptcy price; execution beyond it can leave a shortfall. Platforms may define the same term differently for takeover or auto-deleveraging, so this teaching definition is not universally applicable.
See estimated liquidation price for trigger, equity exhaustion and execution distinctions, and liquidation for the full process.
Where does fund money come from?
Funding follows each platform’s mechanism. For example, OKX’s liquidation explanation allocates some handling amounts to potential execution losses; any surplus enters the relevant fund under its rules.
This does not mean all remaining liquidation assets enter a fund or that every platform uses the same charges and replenishment. A balance must be read with its inflow and spending rules and covered products.
One platform may have one or several funds for different products. A different product’s fund balance is not automatically available protection for the current position.
What happens when the fund cannot continue absorbing losses?
Rules may activate auto-deleveraging (ADL), selecting opposite-side positions to match with positions being handled and offset corresponding quantities. An order book lists unfilled buy and sell quotes and quantities. ADL removes exclusive reliance on those quotes but can end counterparties’ positions earlier than they intended.
For example, OKX can trigger ADL when the applicable fund’s value falls below a defined threshold; some products also have conditions involving pending handling order quantity and duration. ADL can therefore begin before the balance reaches zero.
Product rules determine which positions are selected and the matching price.
What does the fund’s balance mean?
The balance is the fund size at the disclosure time and under its denomination basis. Size alone cannot establish coverage of future shortfalls: product scope, possible losses, fund asset prices and other risk-handling triggers matter.
Fund size does not eliminate individual price losses, liquidation or ADL risk. The fund’s amount and a trader’s position loss are different questions.
Disclosure also does not replace information on user asset reserves. The former explains resources for specific shortfalls; the latter concerns reserves held for users. A fund balance alone does not establish that all user assets are fully backed.
Related terms
Explore liquidation, estimated liquidation prices and margin, or return to the crypto glossary.
