EarnPark's Binance Portfolio Margin Liquidation Hit Four Strategies With About 30% Losses

EarnPark has confirmed that a shared trading account it operated on Binance was liquidated on August 23, cutting roughly 30% from four of its yield strategies and exposing how much risk sat beneath products marketed as market-neutral. The affected strategies were Maker Core, BTC LP, ETH LP and ETH DeFi, all run inside a single account under Binance's Portfolio Margin Pro mode, in which the exchange assesses margin across the entire account rather than position by position. The platform's own incident report, dated September 4, states that the account's unified maintenance margin ratio, the health metric Binance applies in this mode, dropped below the 105% threshold at 21:11 UTC on August 23, at which point liquidation began. Effective leverage stood near 5.5x.

The underlying failure was arithmetic. EarnPark's internal risk model valued collateral at full market price, while the exchange applies a haircut to certain collateral assets, crediting them at less than market value for margin purposes. The model therefore projected a bigger buffer to the liquidation line than the exchange's own math did. Hedging the strategies' directional exposure could not close that gap, because the account still had to satisfy the exchange's margin requirements regardless of how market-neutral the book appeared. The team had in fact asked Binance how collateral was calculated on August 18, five days before the event, and the platform says the exchange explained the unified margin method without addressing the team's specific example. EarnPark also concedes it lacked a routine cross-check of its internal model against the risk figures the exchange displayed, and that its monitoring had no round-the-clock alerting or escalation chain. Portfolio Margin Pro does not liquidate in stages: once triggered, the process runs to completion. The company attributes the loss to its own model and control gaps, not to any hack or unauthorized access, and says deposits made from August 20 until the liquidation were excluded from the loss calculation.

The losses reached users days after the event. EarnPark paused new deposits into the affected strategies on August 25, booked the results into participant accounts on August 29 and notified users individually. Trustpilot complaints filed around September 1 capture the distance between expectation and outcome. A reviewer writing as Garry G said an email informed him that funds placed in Maker Core had lost more than 30%, a product he had understood as low risk with a 5% fixed return; he has asked to withdraw the remaining balance and to be compensated. Another reviewer, Rob, questioned why a strategy he chose for earning the bid-ask spread left him absorbing losses from a leveraged liquidation. The identities and account records behind these reviews are unverified, but the liquidation they reference matches the company's own disclosure. In its public replies, EarnPark states that a risk tier describes the type of risk, not a ceiling on losses.

Remediation is moving, though without a restitution answer yet. An expanded strategy explanation followed on September 2, and from September 11 the platform swapped generic risk tiers for specific risk labels. The September 4 report sets a September 25 target date for automatic position reduction and October 1 for splitting the shared account into strategy-specific accounts. Affected participants have been offered PARK token rewards and higher annualized yields, support EarnPark itself separates from the return of lost principal. Any funds recovered from the exchange are to be distributed pro rata by each strategy's participation weight on August 23. As of that report, Binance's complete official liquidation document and its full response had not arrived. EarnPark separately disclosed a negative result in its USDT DeFi and USDC DeFi strategies, an event it treats as unrelated.

The structural lesson sits in the account design: four product names, one margin trading account, so every depositor shared the same liquidation risk whatever strategy they picked. A model that is never reconciled against the exchange's own displayed metrics functions as a comfort, not a control. Restitution is the open question. PARK rewards and higher yields are contingent value, not returned principal, and no compensation outcome has been published. Users weighing an exit can still withdraw, and some may prefer moving remaining balances into a crypto wallet under their own control, or a hardware wallet, while the full liquidation report and any payout decision stay pending. The episode also lands in a competitive market where yield platforms sell simplicity, and the August 23 record shows what that simplicity can hide.