According to Delphi Digital, in its latest report, WETH, USDT, and USDC represent Aave's three largest lending markets on Ethereum, accounting for 89% of total borrows. These markets show a 25%-35% gap between lending rates and borrowing rates, resulting in approximately $52 million in annual deadweight loss—nearly half of Aave's annualized Q1 revenue. Even if reserve factors are fully eliminated, approximately $36 million in losses would remain.
The analysis was prompted by the April 18 KelpDAO bridge attack, which exposed the peer-to-pool model's structural weakness. Attackers leveraged $292 million in rsETH for margin borrowing on Aave, triggering approximately $200 million in bad debt and causing 100% utilization freezes in primary markets like WETH for five days.