The Anatomy of a Liquidation: Step-by-Step on Decentralised Perps

A liquidation on a decentralised perp venue takes 4 distinct stages. Walk through each one with a concrete leveraged ETH long that gets stopped out.

Liquidations are the most dramatic event in leveraged trading and the least understood. To make the mechanics concrete, follow a hypothetical 5x ETH long opened at $3,000 with $10,000 of margin (notional $50,000) on a generic decentralised perp venue. ETH falls. The position passes through four distinct liquidation stages, each with its own logic.

Stage 1: Margin Burn

• Initial margin: $10,000 deposited, position notional $50,000
• Maintenance margin: 2% of notional = $1,000
• Liquidation price: ($3,000 - ($10,000 - $1,000) / (50,000/3,000)) ≈ $2,460
• ETH price falls from $3,000 to $2,460 — unrealised loss of $9,000 — margin balance drops to $1,000
• Below maintenance: liquidation engine triggers

Stage 2: Liquidation Auction

The liquidation engine posts the position to a public bidder pool. Liquidator bots compete to take over the position at a discount to the mark price (the 'liquidation reward'). On most decentralised venues, this auction happens in a single block — within 1 second on Solana, within 12 seconds on Ethereum. The winning liquidator pays the bankruptcy price and receives the position; the user's remaining $1,000 is the liquidator's reward.

Stage 3: Insurance Fund

• If the position is closed at a worse price than the bankruptcy price (e.g., the market gapped through the liquidation price), the venue's insurance fund covers the gap
• Insurance funds are pre-funded by the venue and grow from accumulated maker fees and liquidation surplus
• Healthy venues maintain insurance funds at >2% of open interest — major venues sit at 5-10%
• Insurance fund coverage protects the venue's solvency even during fast moves where liquidation is delayed

Stage 4: Auto-Deleveraging (ADL)

If the insurance fund is exhausted (rare, has happened during 2020 oil crash equivalent crypto events), the venue's last resort is auto-deleveraging: profitable counterparties on the other side of the same instrument are force-closed at the bankruptcy price. ADL is the worst possible outcome for a profitable trader — they are pulled out of a winning position to cover someone else's loss. In 2026, well-run venues experience ADL events less than once per year.

How to Avoid Being the Worked Example

• Use lower leverage — a 2x position liquidates at -50% spot move, vs -18% for 5x
• Set explicit stop-loss orders well above the liquidation price — close the position yourself before the engine does
• Add margin proactively when the position moves against you — keep the maintenance buffer wide
• Hedge concentrated risk — long ETH perps + short a smaller correlated position to dampen volatility
• Watch funding rates — paying 100% annualised funding over 6 weeks erodes the equity that protects you from liquidation