Aave opens stock-token collateral lending on Base, leaving opt-in USDC lenders exposed to weekend gap risk
Aave has activated a new equity-token lending branch on Base that lets borrowers post seven Coinbase-issued stock tokens as collateral for USDC loans, while lenders who choose to supply to that isolated pool take on a specific form of weekend risk. The market went live on Sept. 25 after temporary restrictions were lifted, according to Aave Labs, with a $21 million USDC borrow cap and a $32 million USDC supply cap. Those figures are limits, not current utilization. The core issue is the oracle schedule. Chainlink’s equity oracle runs from 20:00 Sunday to 20:00 Friday Eastern Time, and holds the last quoted price through weekends and U.S. stock market holidays. Aave itself stays open during that period, and the tokenized equities can still trade on-chain. That means collateral health can deteriorate while the oracle remains frozen, with the protocol only recognizing the change once pricing resumes. If liquidators cannot fully recover value from seized collateral after a sharp move or weak liquidity, bad debt can hit the isolated USDC pool rather than the rest of Aave. LlamaRisk, which set the market’s initial parameters, said the exposure is voluntary for USDC lenders in that pool and does not spill over to other Aave markets. Its modeling includes collateral factors of 65% to 79%, a maximum 24% annualized USDC borrow-rate assumption over the longest market closure, and liquidation bonuses of up to 5.5%, while also warning that historical data cannot account for unprecedented downside moves.
