What Is Auto-Deleveraging (ADL) and How Does It Affect Your Trades?

Why ADL Exists

When a leveraged trader gets liquidated, someone needs to take the other side of that position. Normally, the exchange's liquidation engine handles this by selling the liquidated position into the market. If the market is moving fast and liquidity is thin, the liquidation engine might not be able to close the position at a price that covers the trader's losses.

This creates a shortfall. The trader's margin is gone, and the remaining position is underwater. Exchanges use an insurance fund to cover these shortfalls, absorbing losses so that other traders are not affected.

But insurance funds have limits. During extreme market moves, when many positions are liquidated simultaneously, the insurance fund can get drained. When it runs out, the exchange faces a problem: there are bankrupt positions that cannot be closed at a price that makes anyone whole.

ADL is the backup mechanism. Instead of allowing losses to accumulate in a growing debt (which would ultimately be socialized across all traders), the exchange automatically closes positions belonging to traders on the winning side of the market. These traders have their profitable positions reduced, and the bankrupt positions are closed against them.

It is a last-resort system that prevents exchange insolvency at the cost of disrupting profitable traders.

How ADL Works Step by Step

The ADL process follows a consistent logic across most exchanges:

Step 1: A liquidation occurs. A trader's position falls below maintenance margin and triggers liquidation. The liquidation engine attempts to close the position on the open market.

Step 2: The insurance fund covers shortfalls. If the liquidation cannot be completed at a price that covers losses, the insurance fund absorbs the difference. As long as the fund has sufficient capital, no other traders are affected.

Step 3: Insurance fund depletion. During extreme moves, multiple liquidations exhaust the insurance fund. The fund can no longer cover shortfalls.

Step 4: ADL queue activation. The exchange ranks all traders on the opposite side of the liquidated position by a combination of profitability and effective leverage. The most profitable, most leveraged traders are at the top of the queue.

Step 5: Position reduction. Starting from the top of the queue, the exchange automatically reduces or closes positions until the bankrupt position is fully absorbed. The affected traders receive the current mark price for the closed portion of their position. No slippage is added, but they have no choice in the matter.

The ADL Priority Queue

Not all profitable traders face equal ADL risk. Exchanges use a ranking system to determine who gets deleveraged first. The ranking typically combines two factors:

Profit percentage. How much unrealized profit the position has accumulated relative to its margin. A position that has doubled in value is higher priority than one with a 10% gain.

Effective leverage. How leveraged the position is. A 20x leveraged position in profit is higher priority than a 5x leveraged position with the same profit percentage. Higher leverage means the position uses less margin relative to its notional size, making it a more "efficient" candidate for ADL from the exchange's perspective.

The combination means that traders using high leverage on positions with large unrealized gains are the most likely to be affected. Conservative traders using low leverage with modest gains are near the bottom of the queue.

Some exchanges display an ADL indicator that shows your current position in the queue. If your indicator is lit up or showing high priority, it means your position would be among the first closed if ADL triggers.

When Does ADL Actually Trigger?

ADL is rare under normal market conditions. It occurs during extreme scenarios such as flash crashes or pumps where price moves by 10% or more in minutes, cascading liquidation events where a large number of positions get liquidated simultaneously and the insurance fund cannot keep up, low-liquidity conditions where the market is too thin to absorb large liquidation orders, and single massive liquidations where a whale position is so large that its liquidation overwhelms available liquidity.

On Hyperliquid, the HLP vault serves as the primary counterparty for liquidations, which provides a deeper buffer before ADL would need to trigger. However, no system is immune to extreme events.

ADL on Hyperliquid

Hyperliquid's approach to liquidations includes several layers before ADL becomes necessary:

HLP vault as first backstop. The HLP vault absorbs liquidated positions, using its market-making capital to take over and unwind them. With over $370 million in TVL, HLP provides substantial capacity. The vault profited approximately $15 million from a single $700 million whale liquidation in February 2026, demonstrating its ability to handle large events.

Leverage limits. After a toxic liquidation event in March 2025, Hyperliquid reduced maximum leverage to 40x for BTC and 25x for ETH. Lower leverage limits mean less extreme position sizes relative to margin, which reduces the severity of liquidation shortfalls and decreases the likelihood that ADL would need to trigger.

On-chain insurance fund. Fees collected from liquidations contribute to an on-chain insurance fund that covers shortfalls before any ADL mechanism activates.

These layers mean ADL is a rare event on Hyperliquid, but it remains a theoretical possibility during extreme market conditions. Understanding it helps you manage risk even if you never directly experience it.

How ADL Affects Your Trading

Unexpected position closure

The most direct impact is losing a position you did not intend to close. If you are running a trade with a specific take-profit target and ADL closes your position before you reach it, your planned trade is disrupted. You receive the current market price, which might be profitable, but it is not the exit you chose.

Strategy disruption

For basis trades, hedging strategies, or multi-leg positions, having one leg involuntarily closed can create unhedged exposure. If your short perp gets ADL'd while your long spot remains open, you suddenly have directional risk you did not intend.

Psychological impact

Getting a profitable position closed without warning is frustrating. Traders who do not understand ADL may blame the exchange or assume manipulation. Understanding the mechanism helps you process it rationally.

How to Reduce Your ADL Risk

Use lower leverage

This is the most effective protection. Lower leverage means your position is further down the ADL priority queue. A 3x leveraged position in profit is far less likely to be affected than a 20x position with the same profit. Reducing leverage from 10x to 5x can meaningfully change your queue position.

Take profits along the way

Since ADL targets the most profitable positions, taking partial profits as your trade moves in your favor reduces your unrealized PnL and therefore lowers your priority in the queue. A position with 50% unrealized profit is a bigger target than one where you have already realized half the gains.

Monitor ADL indicators

If your exchange shows an ADL indicator, check it regularly when holding large profitable positions during volatile markets. A high-priority ranking during a volatile period is a signal to consider reducing your position voluntarily rather than waiting for forced reduction.

Avoid overconcentration in one direction

During strongly trending markets where most traders are positioned on one side, the opposite side has fewer positions to absorb liquidations. If everyone is long and the market crashes, the few remaining shorts are prime ADL candidates. Being aware of crowded positioning helps you assess ADL risk.

Understand the insurance fund status

Some exchanges publish the size of their insurance fund. A healthy, growing fund means ADL is unlikely. A rapidly depleting fund during volatile conditions is an early warning sign.

ADL vs Socialized Loss

Not all exchanges use ADL. Some use a socialized loss model instead, where shortfalls from liquidations are spread across all profitable traders proportionally rather than targeting specific positions. Both approaches achieve the same goal (preventing exchange insolvency) but distribute the burden differently.

ADL concentrates the impact on a small number of high-priority traders. Socialized loss spreads a smaller impact across everyone. From an individual trader's perspective, ADL is more disruptive if you are the one affected but invisible if you are not. Socialized loss is a small drag on everyone.

Hyperliquid and most major exchanges use ADL-style systems because they maintain cleaner accounting and do not create hidden costs for all traders.

The Bottom Line

Auto-deleveraging is the exchange's last line of defense against insolvency during extreme market events. It protects the system by closing profitable, highly leveraged positions to cover shortfalls from liquidations that exceed the insurance fund.

For most traders most of the time, ADL will never trigger. But understanding how it works, where you sit in the priority queue, and how to reduce your exposure is part of comprehensive risk management. The traders who get caught by ADL are almost always the ones who did not know it existed.