Compound is one of the better-known decentralised finance (DeFi) lending protocols: you supply assets to a pool, borrowers post collateral, interest rates float with utilisation. Relative to anonymous “24% a month” farms it sits in a more serious peer group. Relative to a regulated bank deposit it is still a stack of smart-contract, oracle and market risks.
History matters more than a homepage APY. In November 2020 an anomalous DAI price on one exchange fed into Compound’s oracle path and helped trigger large liquidations. In 2021 a rewards-logic bug mis-distributed COMP from the incentive pool — painful for the programme, different from emptying user supplies. Later write-ups still treat misconfigured or stale price feeds as a recurring theme. Governance can change parameters and upgrade contracts; that agility also means a malicious or bungled proposal is a live concern. In late 2025, risk advisers publicly discussed pausing certain stable markets when another protocol’s dollar-pegged asset blew up — a reminder that your “USDC market” can freeze when someone else’s design fails.
Compound III (Comet) isolates markets around a base asset and a collateral set, which limits some cross-contamination versus older shared-pool designs. It does not remove utilisation risk: if almost everything is borrowed, large withdrawals wait on repayments or liquidations. Asset risk remains yours — a depegging stable or a crashing collateral still hits the system you rely on.
Before you supply size, read which oracle and risk parameters the market uses, whether pauses exist, and how governance is timed. Treat the yield as compensation for those risks, not as interest on cash under a mattress. For how price feeds break positions, see Crypto oracles.
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