What is auto-deleveraging (ADL)? Real cases from 2025-26
Short answer: Auto-deleveraging (ADL) is a perp exchange's last line of defense. When a liquidated position can't be closed for what its margin covers, and the insurance fund or backstop vault can't take the loss, the exchange force-closes profitable traders on the other side, usually the most profitable and highest-leverage first. Hyperliquid did it on 10-11 Oct 2025, crypto's record liquidation day, for the first time in over 2 years, according to insights4vc and a BlockBeats explainer (insights4vc; ChainCatcher).
| Date | DEX | What happened | ADL? |
|---|---|---|---|
| 24 Sep 2025 | Aster | An XPL index misconfiguration caused a price spike and forced liquidations; Aster reimbursed users (Blockworks) | No |
| 10-11 Oct 2025 | Hyperliquid | Record day: about $19B of futures liquidated market-wide, more than half on Hyperliquid (Cointelegraph) | Yes, the first in over 2 years, per insights4vc and BlockBeats (insights4vc) |
| 12 Nov 2025 | Hyperliquid | POPCAT: a $20-30M long across 19 wallets was liquidated, and HLP lost about $4.9M, per an onchain analyst (The Block) | Not reported |
| 19 Jan 2026 | Paradex | Bad price data put BTC at $0 and mass liquidations followed; Paradex rolled its chain back (The Block) | No, rollback instead |
| 25 Feb 2026 | Lighter | ARC: a whale long lost about $8.2M; LLP took the rest and lost $75K (Cointelegraph) | Yes, some profitable shorts partly closed |
| 9 Apr 2026 | Hyperliquid | FARTCOIN: a $15M long across 4 linked wallets was liquidated; PeckShield estimated an HLP loss of about $1.5M, not confirmed by Hyperliquid (Cointelegraph) | Yes, at least 2 wallets, about $849K of gains, per Lookonchain |
| 27 Jul 2026 | Hyperliquid (trade.xyz market) | SKHYNIX: a bad oracle print liquidated 960 longs holding $57.4M of positions (Nexus Mutual) | Yes, about 100 shorts, about $10.8M of profit |
What is auto-deleveraging, in plain terms?
Every perp trade has a winner and a loser, and the loser's margin pays the winner. Liquidation closes a losing position before its margin runs out. In a fast market, though, the price can blow past the point where the margin still covers the loss, and someone has to absorb the gap.
Exchanges stack 3 layers to cover it:
- The liquidation. The engine closes the position in the market, ideally before the margin is gone.
- A backstop. An insurance fund or liquidity vault takes over the position or the loss.
- ADL. If the backstop can't or won't absorb it, the exchange force-closes positions on the winning side to offset it.
ADL is unpopular because it hits traders who did nothing wrong. Your short was right, and you still got closed, often when it was most profitable.
What are insurance funds and backstop vaults?
They're pools of money that sit between a bad liquidation and ADL. Designs differ:
- HLP (Hyperliquid). A community vault that takes over positions the order book can't absorb. It took over the POPCAT long and lost about $4.9M, per an onchain analyst (The Block), and lost about $1.5M on FARTCOIN, per PeckShield's estimate, which Hyperliquid hadn't confirmed (Cointelegraph).
- LLP (Lighter). A pool that absorbs liquidated positions, split into separate risk buckets so one market's loss doesn't hit the whole pool (Cointelegraph). Only LIT stakers can deposit, up to 10 USDC per LIT staked (Lighter docs).
- JLP (Jupiter Perps). The pool is the counterparty to every trade, at oracle prices (DefiLlama, checked 9 Nov 2026).
- GLP, GM and GLV (GMX). GMX's V1 ran on the GLP pool (The Block); V2's GM and GLV pools act as counterparty and backstop (DefiLlama, checked 9 Nov 2026). GMX's docs limit ADL to synthetic markets when pending profit passes a threshold (GMX docs, checked 9 Nov 2026).
- Paradex's insurance fund. Paradex skips ADL. If the fund is bankrupt, "Paradex eschews ADL in favor of a socialized loss", deferred until withdrawal, so only users who withdraw during the shortfall bear it (FalconX).
In pool designs like JLP and GM, liquidity providers are the other side of every trade, so a big trader win is an LP loss.
Who gets closed first in an ADL queue?
Usually the most profitable, highest-leverage positions on the winning side. On Hyperliquid, each market keeps its own queue, ranked by unrealized profit first, then leverage, then size, and refreshed about every 3 seconds, according to a BlockBeats explainer (ChainCatcher). Pacifica's docs say only that ADL closes opposing profitable traders "based on risk priority" (Pacifica docs, checked 9 Nov 2026).
On a ranking like Hyperliquid's, lower leverage moves a winning position down the queue. It doesn't take it out.
What happened on Hyperliquid on 10-11 October 2025?
About $19B of futures positions were liquidated across the market, and more than half of them were on Hyperliquid (Cointelegraph). insights4vc put the total at $19.3B, "nine times larger than any previous single-day total", with "over $10 billion of positions force-closed" on Hyperliquid (insights4vc).
insights4vc and a BlockBeats explainer report that Hyperliquid's engine triggered ADL for the first time in over 2 years (insights4vc; ChainCatcher). We didn't find CoinDesk, The Block or Bloomberg confirming that detail. Galaxy Research says only that ADL "kicked in on multiple venues" (Galaxy). Its founder said "thousands of liquidations per second left a gap in counterparties", as quoted by insights4vc. We didn't find an official count of how many accounts were ADL'd.
Centralized exchanges hit the same wall. insights4vc reported that some large shorts on Binance were "reduced without their consent" and that Binance used about $188M from its insurance fund to cover bad debt. For how these events weigh on Hyperliquid's score, see Is Hyperliquid safe? What can go wrong.
What other ADL events hit the DEXs we score?
- Lighter, ARC (25 Feb 2026). A whale's long took ARC open interest to about $50M, then lost about $8.2M when the price fell (Cointelegraph). About $2M was liquidated on the order book and the rest moved into LLP, which briefly held 200M ARC worth $14.7M. ADL partly closed some profitable shorts. Lighter said "LLP lost 75k" because ARC sat in a separate risk bucket. It then capped ARC open interest at $40M, with a pool of about $100K that switches to ADL automatically once used up (same source).
- Hyperliquid, FARTCOIN (9 Apr 2026). A $15M long across 4 wallets that PeckShield and Lookonchain linked to one entity was liquidated in under 3 hours (BeInCrypto). PeckShield estimated that HLP lost about $1.5M over 24 hours, and Lookonchain counted at least 2 wallets that gained about $849K through ADL. Hyperliquid hadn't confirmed those figures when Cointelegraph reported them (Cointelegraph). PeckShield called it a "suicide" liquidation that forced ADL (BeInCrypto).
- Hyperliquid, SKHYNIX (27 Jul 2026). A bad oracle print on a trade.xyz stock perp led to 960 long liquidations and ADL on about 100 profitable shorts, who realized about $10.8M (Nexus Mutual). Full story: Where to trade stock perps onchain.
- Paradex (19 Jan 2026). Not ADL. Bad price data caused wrongful liquidations, and Paradex rolled its chain back instead; see The Paradex rollback: what happened in Jan 2026 and what it means for exit risk.
This pass didn't turn up a verified ADL event in 2025-26 for Aster, Variational, edgeX, Pacifica, Extended, GMX or Jupiter Perps. That isn't proof none happened.
How does each DEX's backstop work?
| DEX | Liquidation score | Backstop | Verified ADL, 2025-26 |
|---|---|---|---|
| Hyperliquid | 6/10 | HLP vault takes over liquidated positions | Oct 2025, Apr 2026; Jul 2026 on a trade.xyz market |
| Lighter | 8/10 | LLP with separate risk buckets; LIT stakers only | Feb 2026 |
| Aster | 6/10 | ALP pool is the market-maker counterparty; no insurance fund disclosed in its filing (Blockworks) | None verified |
| Variational | 6/10 | OLP is the only counterparty; size not disclosed (Datawallet, checked 9 Nov 2026) | None verified |
| edgeX | 8/10 | eLP vault (The Block Research, checked 9 Nov 2026) | None verified |
| Pacifica | 6/10 | A backstop liquidator takes positions below 2/3 of maintenance margin, then ADL "based on risk priority" (Pacifica docs, checked 9 Nov 2026) | None verified |
| Extended | 8/10 | Has a vault; its backstop role isn't documented in pages we checked (Extended docs, checked 9 Nov 2026) | None verified |
| Paradex | 8/10 | Insurance fund, then a socialized loss charged at withdrawal (FalconX) | None; it doesn't use ADL |
| GMX | 10/10 | GM and GLV pools; ADL only in synthetic markets (GMX docs, checked 9 Nov 2026) | None verified |
| Jupiter Perps | 9/10 | JLP pool is the counterparty (DefiLlama, checked 9 Nov 2026) | None verified |
Factor scores follow our method and update monthly on Perpd. The full table is on the Perp DEX risk scorecard: 10 DEXs ranked by risk.
Sources
- Inside the $19B flash crash, insights4vc, 16 Oct 2025
- Hyperliquid triggers full ADL for the first time: what are HLP and ADL? (BlockBeats), ChainCatcher, 15 Oct 2025
- Hyperliquid pauses deposits, withdrawals amid POPCAT trading scheme speculation, The Block, 12 Nov 2025
- Whale loses $8.2M in ARC squeeze on Lighter, Cointelegraph, 26 Feb 2026
- FARTCOIN manipulation on Hyperliquid causes HLP loss, BeInCrypto, 9 Apr 2026
- xyz:SKHYNIX flash crash on Hyperliquid: incident report, Nexus Mutual, 3 Aug 2026
- Paradex's 'free bitcoin' pricing glitch triggers mass liquidations, forces rollback, The Block, 19 Jan 2026
- Paradex DIME: the zero-fee, privacy-first perps DEX, FalconX, 5 Mar 2026
- Aster (ASTER) token transparency filing, H2 2026, Blockworks, H2 2026
- LIT utility, Lighter docs, accessed 14 Nov 2026
- Jupiter Perpetual Exchange, DefiLlama, accessed 9 Nov 2026
- GMX, DefiLlama, accessed 9 Nov 2026
- GMX $44 million compensation plan, The Block, 14 Aug 2025
- Trading on V2, GMX docs, accessed 9 Nov 2026
- Liquidations, Pacifica docs, accessed 9 Nov 2026
- Variational explained, Datawallet, 28 Sep 2026
- edgeX: where mobile traders meet institutional liquidity, The Block Research, Jan 2026
- Extended docs index, accessed 9 Nov 2026
- $19B crypto market crash: Was it leverage, China tariffs or both?, Cointelegraph Magazine, 13 Oct 2025
- Crypto's most violent flash crash yet, Galaxy Research, 15 Oct 2025
- Trader loses $3M in Fartcoin liquidation on Hyperliquid, Cointelegraph, 9 Apr 2026
FAQ
What does auto-deleveraging mean in crypto?
Auto-deleveraging (ADL) is when an exchange force-closes profitable positions to cover a loss that its liquidation engine and backstop fund can't absorb. It usually starts with the most profitable, highest-leverage positions on the winning side.
Why did Hyperliquid auto-deleverage traders in October 2025?
On 10-11 Oct 2025 about $19B of crypto futures positions were liquidated, more than half on Hyperliquid, per Cointelegraph. Liquidations outran counterparties, and insights4vc and a BlockBeats explainer report Hyperliquid's first ADL in over 2 years.
Can I avoid being auto-deleveraged?
Not fully. On queues like Hyperliquid's, rank depends on profit and leverage, so lower leverage moves you down the queue. Any profitable position on the winning side can still be closed.
Is HLP an insurance fund?
It plays that role. HLP is Hyperliquid's community vault and takes over positions the order book can't absorb, so it can win or lose. It lost about $4.9M on a POPCAT long in Nov 2025, according to an onchain analyst.
Related
- Is Hyperliquid safe? What can go wrongWhat can go wrong on Hyperliquid: its validator-run bridge, 5 incidents since March 2025, HLP and ADL losses, HYPE unlocks and who is barred.
- Where to trade stock perps onchainWhich onchain venues list stock perps in Nov 2026, how each prices them after hours and at weekends, max leverage, and the SK Hynix flash crash.
- The Paradex rollback: what happened in Jan 2026 and what it means for exit riskHow a database bug sent Paradex's BTC perp to $0 on 19 Jan 2026, why Paradex could roll back its chain, and what it means for getting funds out.
- After the $6.3B Binance hack: are perp DEXs safer?What the 29 Oct 2026 Binance hack changes for perp traders, and how 10 perp DEXs compare on getting your money out.
Scores are never for sale. This page has no affiliate links and no paid placements. Not financial advice: perps are leveraged and you can lose more than you deposit.