Yield · YFI · $0.3B TVL. Yearn invented the yield aggregator and, with YFI's fair launch, wrote one of DeFi's founding myths. The screen scores what remains: a technically sound vault protocol with a diversified treasury, a durable contributor culture, and a shrinking reason to exist as yield opportunities moved on-chain-native and vault strategies commoditized.
Solvency screens at A on defensive characteristics: essentially zero unlock pressure (YFI's supply has been fixed since 2020), a moderate drawdown, a 7/10 risk score built on years of vault operation with strategy-level incidents contained rather than systemic, and a treasury that was diversified early and deliberately. Fee coverage (~1x) is break-even.
Legitimacy screens at BBB. Audits remain solid and governance (6/10) is genuinely participatory in the veYFI structure. The deduction is delivery (6/10): v3 shipped, but the pace and clarity of direction have wandered across multiple strategic pivots.
Growth screens at CCC: 4% share, -35% TVL, 3/10 momentum. The aggregator layer is being disintermediated by protocols that issue their own yield-bearing tokens directly.
Composite CCC. A well-capitalized, well-governed protocol in a category the market has partially outgrown. A full rating would focus on treasury runway relative to contributor cost — Yearn's solvency question is organizational, not financial.
"A chain is as strong as its weakest link." The conservative composite takes the weakest dimension and inherits any notching cap, so a single structural weakness cannot be diluted by strength elsewhere.
