DeFi's Credit Risk Repriced in Record Time

The lending of stablecoins on Aave, a benchmark for DeFi, offered a 2.32% APY as of April 17, despite the Federal Reserve's overnight rate being 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 situation changed drastically over the course of 48 hours. The market's reassessment of DeFi credit risk was prompted by an exploit on Kelp DAO's cross-chain bridge, which led to the minting of unbacked tokens worth around $292 million. These synthetic tokens were used as collateral on Aave, resulting in the borrowing of an estimated $190-230 million in real assets. The incident highlighted the lack of bankruptcy laws within DeFi protocols and the potential for disproportionate losses for users who are unable to withdraw their funds quickly. The aftermath of the exploit saw a significant increase in stablecoin deposit APYs on Aave, from 3-6% to 13.4%, and a liquidity scramble that rippled outward to other DeFi platforms. The total DeFi TVL across the top 20 chains fell by more than $13 billion. The incident serves as a reminder that DeFi is not risk-free and that permissionless markets carry a premium over their regulated equivalents. Institutional allocators should take note of the market's signal and reassess their exposure to DeFi in light of the recent events.