Until April 17, lending stablecoins on Aave yielded 2.32% APY, lower than the Federal Reserve's overnight rate of 3.64%. This implied that the market viewed an unregulated, open-source smart contract 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 correction made no sense, with Aave's yield 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 allowed an attacker to mint unbacked tokens worth around $292 million. This led to a contagion effect, with $6-10 billion in net outflows from Aave and a significant increase in stablecoin deposit APYs.
The incident highlights the lack of bankruptcy law and recourse in DeFi protocols, making it essential for institutional allocators to reassess their exposure to DeFi. The market's correction serves as a reminder that DeFi is not risk-free and carries a premium over regulated equivalents. As the market settles, it is crucial for investors to take the signal seriously and reconsider their DeFi exposure for the coming year.