dYdX taps $9 million insurance fund after YFI liquidation shock

dYdX said on November 18, 2023 that roughly $9 million from its v3 insurance fund had been used to cover shortfalls left by liquidations in the YFI perpetual market. The exchange said customer funds were not affected and reported about $13.5 million remained in the fund.

The loss followed a sudden fall in YFI, the governance token associated with Yearn Finance, after a sharp buildup in leveraged exposure on dYdX v3. Founder Antonio Juliano characterized the episode that day as a targeted attack involving manipulation of the broader YFI market. That was the platform’s contemporaneous allegation, not an independently established finding on November 18.

A thin market met concentrated leverage

The central risk was not simply that YFI fell. It was that a comparatively illiquid underlying token supported a large perpetual-futures position. When price moved down quickly, the exchange’s liquidation process could not close the positions before some accounts went below zero. The insurance fund absorbed the deficit.

dYdX’s fuller January 3, 2024 postmortem later supplied figures that were unavailable in the first announcement. It said YFI-USD open interest on v3 rose from about $0.8 million to $67 million during activity running from November 1 through November 17, with an actor using 5-times leveraged long positions across many accounts. The company said YFI rose from roughly $6,500 to more than $14,000 between November 9 and November 17 before the break.

For the crash itself, dYdX’s postmortem reported that YFI fell nearly 30% in a one-hour window around 05:00 UTC on November 18. The postmortem did not specify one spot venue or exact opening and closing ticks for that percentage. The figure should therefore be read as dYdX’s rounded account of the cross-market move, not as an independently reconstructed exchange candle.

Why the insurance draw mattered

An insurance fund is meant to prevent failed liquidations from becoming losses for other traders. Its use showed that the backstop worked in the narrow sense: dYdX said user balances were untouched. But consuming about $9 million—roughly 40% of the approximately $22.5 million implied by the platform’s reported draw and remaining balance—also exposed how quickly concentrated leverage could overwhelm available liquidity. The 40% figure is a calculation from dYdX’s rounded numbers, so it is approximate.

The episode mattered beyond YFI. It tested the market controls of a prominent decentralized-derivatives venue as dYdX shifted attention toward its recently launched chain. On November 18, Juliano said the team would review risk parameters in both v3 and the chain software. The immediate record supported a risk-management story, not evidence that the new dYdX Chain itself had been compromised.

What was known, and what was not

As of November 18, the verified facts were limited: the v3 insurance fund had covered approximately $9 million in liquidation deficits, dYdX said $13.5 million remained, and the platform said no customer funds were affected. The identity, trading sequence and intent behind the positions were still under investigation.

Later context clarified the mechanism. In January 2024, dYdX said the activity appeared to be an oracle-manipulation attack, described linked accounts and withdrawals, and reported that the actor’s trading drained more than $9 million from the fund. Those conclusions strengthen the reconstruction, but they should not be read as facts that had already been fully demonstrated on November 18, 2023.