Curriculum·S209 The Centralized Exchange in Depth·about 32 min
Account architecture
By the end of this lesson you can
- →Distinguish isolated from cross margin, and compute what each does to a portfolio in stress
- →Explain the liquidation waterfall, including what happens after the insurance fund is exhausted
- →Describe auto-deleveraging and why it can close a position that was correct and profitable
- →Design an account structure whose compartments are real rather than nominal
Sophomore · enrolled learners
This lesson opens with Auto-deleveraging, 10 October 2025.
- What happened
- During the deleveraging event, Hyperliquid used auto-deleveraging repeatedly to close $2.1B of positions in 12 minutes, according to Tarun Chitra's analysis of the venue's data. Auto-deleveraging is the final stage of a liquidation waterfall: when a bankrupt position cannot be absorbed by the order book and the venue's remaining buffers, such as an insurance fund, are exhausted, the platform forcibly reduces opposing profitable positions to restore solvency, ranking them on a blend of unrealized profit, effective leverage and position size. Chitra's model estimated that Hyperliquid's production process took between $45.0M and $51.7M more from profitable traders than covering the shortfall required, and suggested that Binance used the mechanism far more heavily still. Wintermute's chief executive, Evgeny Gaevoy, said on The Block's podcast, as Forbes reported, that Binance auto-deleveraged the firm at $5 on a token trading at about $1, a price it could not hedge against.
- The decision point
- Auto-deleveraging closes positions that were correct. The selected traders were on the profitable side of a move, had not been liquidated, and were removed anyway because the venue's own solvency required it. That is a risk of the account architecture rather than of the position, it appears nowhere in a position's own risk metrics, and most participants learn it exists at the moment it is applied to them.
What you will be able to answer
- →What is the difference between isolated and cross margin?
- →Name the stages of the liquidation waterfall.
- →Why can auto-deleveraging close a correct position?
- →What makes a compartment real rather than nominal?
Orientation and Year One are open: anyone can read them without an account. From Year Two onward the lessons are for enrolled learners, because progress through the later years only means anything if it is tracked against a record.
It is free. We do not sell the list and there is nothing to buy at the end of it.
Sources and review
- https://arxiv.org/abs/2512.01112
- https://www.coindesk.com/markets/2025/10/11/how-adl-on-crypto-perp-trading-platforms-can-shock-and-anger-even-advanced-traders
- https://www.forbes.com/sites/boazsobrado/2025/10/21/locked-out-and-liquidated-traders-blame-binance-for-19-billion-crash/
- https://hyperliquid.gitbook.io/hyperliquid-docs/trading/margining
- https://www.21shares.com/en-eu/insights/why-did-ethenas-stablecoin-remain-stable-onchain-but-depegged-on-binance
- https://www.coindesk.com/markets/2025/10/12/binance-to-compensate-users-affected-by-crash-in-wbeth-bnsol-and-ethena-s-usde
- https://www.binance.com/en/support/announcement/detail/0989d6c7f32545bfb019e3249eaabc3f
Confidence medium·Volatility high·Reviewed 2026-10-22·Owner unassigned
Contested
The $2.1B in 12 minutes and the $45.0M to $51.7M figures are from Tarun Chitra, 'Autodeleveraging: Impossibilities and Optimization' (arXiv 2512.01112, v3, revised February 2026), an unrefereed preprint whose empirical section was corrected twice after publication. The $45.0M to $51.7M is the estimated excess of Hyperliquid's production haircut over the minimum the shortfall required, not the total profit removed. Attribute it and treat the mechanism rather than the magnitude as the durable content.
An earlier version said traders at low leverage reported being closed by auto-deleveraging and that depth on the auto-deleveraging venue fell 98 percent. No source we could find supports either: the 98 percent figures are Binance data, not Hyperliquid's. Both were cut.
R403 owns leverage strategy. This course covers the account architecture that leverage runs inside, because the coupling risk applies to unleveraged holdings sitting in the same account. Do not let a revision add leveraged strategy content.