Delphi Digital has identified significant structural issues within Aave's Ethereum market, particularly concerning the lending markets for WETH, USDT, and USDC. According to ChainCatcher, these three markets account for 89% of total borrowing on Aave, with supply rates approximately 25%-35% lower than borrowing rates. This discrepancy results in an annual deadweight loss of about $52 million, nearly half of Aave's annualized revenue for the first quarter. Even if the reserve factor is completely eliminated, a loss of approximately $36 million would still persist.
Delphi Digital argues that Aave's peer-to-pool model has inherent structural flaws. The issue was further highlighted by the April 18 KelpDAO bridge attack, where attackers leveraged $292 million in rsETH for borrowing on Aave, resulting in nearly $200 million in bad debt. This incident led to a 100% utilization freeze in major markets like WETH for five days.