Until April 17, lending stablecoins on Aave yielded 2.32% APY, lower than the Federal Reserve's overnight rate of 3.64%. This discrepancy suggested the market viewed DeFi as a lower credit risk than the US Treasury. However, this mispricing was corrected within 48 hours. The hierarchy of dollar-credit options by yield prior to the incident made little sense, with Aave's rate being significantly lower than other investment-grade options.
The market's repricing of DeFi credit risk was triggered by an exploit on Kelp DAO's cross-chain bridge, which led to a loss of around $292 million. This incident highlighted the contagion risk in DeFi protocols and the lack of structural safeguards. As a result, Aave's stablecoin deposit APYs surged from 3-6% to 13.4% within two days, and the total DeFi TVL across the top 20 chains fell by over $13 billion. The incident also exposed the lack of bankruptcy laws and recourse in DeFi, making it essential for institutional allocators to reassess their risk exposure.
The market's adjustment of DeFi rates serves as a reminder that permissionless markets carry a premium over their regulated equivalents and are not risk-free.