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 incident did not make sense, with Treasury overnight rates at 3.64%, Ledn's investment-grade Bitcoin-backed ABS senior tranche at 6.84%, and Aave at 2.32%. The market's repricing of DeFi credit risk was triggered by an exploit on Kelp DAO's LayerZero-powered cross-chain bridge, which allowed an attacker to mint unbacked tokens and borrow against them on Aave.
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 allocators to understand the risks involved. DeFi is not going away, but the market has now adjusted to reflect the underlying risks, and institutional allocators should take this signal seriously when sizing their exposure for the coming year.