yearn.finance (YFI) is a decentralized finance (DeFi) protocol on Ethereum that aggregates yield-generating strategies through automated vaults. Users deposit assets into these vaults, which allocate funds across lending and liquidity strategies to generate returns without requiring manual management.
The protocol's smart contracts have evolved through multiple versions, including V2 and V3, automating strategy selection and rebalancing. YFI is the protocol's native governance token, giving holders decision-making authority over vaults, treasury, and the multi-DAO structure that operates the platform today.
Yearn's differentiation lies in its fair-launch governance model and revenue-sharing structure rather than typical venture-backed tokenomics. A 2026 governance proposal reportedly directs 90% of protocol revenue to YFI stakers through the stYFI mechanism, tying token value to protocol usage rather than only speculative governance rights.
The project's treasury reportedly held over $45 million and executed a $7.5 million token buyback, coinciding with a reported 46% four-day price gain, linking YFI's value to actual protocol cash flow rather than governance rights alone.
YFI functions purely as a governance token rather than a utility or payment token. Holders vote on protocol changes and determine which yTeams and multisig members operate within Yearn's structure.
Rather than using raw YFI for voting, participants have historically locked tokens as veYFI (vote-escrowed YFI, with locks of up to four years) to gain voting weight. Yearn's newer stYFI model replaces long locks with a staking mechanism carrying a 14-day cooldown, through which stakers receive a share of protocol revenue.
YFI launched in 2020 with zero pre-mine and no maximum-supply cap; roughly 30,000 tokens were distributed at launch. Supply has grown modestly since through governance-approved emissions, making net token supply mildly inflationary rather than fixed or deflationary.
YFI launched via a fair-launch distribution beginning July 17, 2020, with no ICO, private sale, or venture-capital allocation. Approximately 30,000 YFI were distributed to early liquidity providers and protocol users through a surprise yield-farming event; total supply before launch was zero, and founder Andre Cronje reportedly received no special allocation.
The protocol itself was founded starting around February 2020, meaning the fair-launch token distribution came roughly five months after Yearn's founding. Separately, in July 2026 the U.S. government moved previously FTX-seized YFI tokens, adding reported minor sell pressure.
YFI is deployed on Ethereum, which uses a proof-of-stake consensus mechanism. The token's canonical contract has operated on Ethereum since July 2020.
Yearn has also deployed or bridged official YFI implementations to other EVM-compatible networks, including Base, Polygon, Arbitrum, Optimism, Avalanche, Fantom, Gnosis, Energi, Huobi ECO Chain, and Harmony, each secured by its own host chain's consensus mechanism. Ethereum remains the primary network by liquidity and trading activity, and Yearn does not operate its own blockchain or validator set.
Yearn.finance was created by Andre Cronje, a South African software developer, starting around February 2020. Cronje later stepped back from active DeFi involvement, which he attributed to pressure stemming from a U.S. Securities and Exchange Commission inquiry beginning in 2021; that investigation concerning Yearn was reported concluded in March 2025, with staff not recommending enforcement action.
Beyond Cronje, Yearn is described as maintained by various independent, largely pseudonymous developers rather than a fixed named team.
Yearn.finance has no traditional issuing company; the protocol is maintained by various independent developers and governed by YFI holders rather than a registered legal entity.
Operations run through a multi-DAO structure in which YFI holders, focused yTeams, and a multisig divide governance and execution responsibilities. Contributors, developers, strategists, and auditors are compensated through a yTeam multisig rather than a traditional corporate payroll.
Yearn is governed on-chain and via forum by YFI holders under a multi-DAO structure formalized by YIP-61 ("Governance 2.0"), passed April 25, 2021.
YFI holders vote on protocol changes and select yTeams and multisig members; yTeams handle specific operational areas; a multisig executes or can veto on-chain actions. Voting power originally used raw YFI, then shifted to veYFI (locks up to four years), and more recently toward stYFI, a staking model with a 14-day cooldown that routes protocol revenue to participating stakers.
Yearn's vaults have been audited by multiple firms, including Trail of Bits, MixBytes, ChainSecurity, StateMind, and its DAO-affiliated yAudit collective across V2 and V3 versions. An early CertiK audit of iEarn Finance (March 2020) found no critical or major issues.
Legacy contracts have nonetheless suffered exploits: approximately $11M in 2021, ~$11.5M from a misconfigured yUSDT vault in April 2023, ~$9M from a yETH infinite-minting exploit in November 2024, and ~$300,000 from a flash-loan attack on a legacy V1 TUSD vault in December 2025. Top 10 holders control 39% of YFI supply.