Until April 17, lending stablecoins on Aave yielded 2.32% APY, 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 mispricing was corrected within 48 hours. The market repriced DeFi credit risk after an attacker exploited Kelp DAO's cross-chain bridge, minting unbacked tokens and borrowing against them on Aave.
This led to a contagion, with $6-10 billion in net outflows from Aave, and a surge in utilization rates for WETH, USDT, and USDC pools. As a result, Aave stablecoin deposit APYs rose from 3-6% to 13.4%, while Morpho's USDC vault APR jumped from 4.4% to 10.81%.
The total DeFi TVL across the top 20 chains fell by over $13 billion. This 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 DeFi exposure.