Yearn OG USDT
- Unrecognized Collateral AssetYELLOWPT-yvvbUSDC(vbUSDC)-2026/08/02 / vbUSDT
Morpho has flagged the PT-yvvbUSDC(vbUSDC)-2026/08/02 / vbUSDT market: unrecognized_collateral_asset.
Plain-English summary of this vault — what it does, who runs it, where the yield comes from, and what could break it. Generated from the same deterministic inputs shown elsewhere on this page; the numbers are the source, this is just the explanation.
You deposit vbUSDT (a Katana-wrapped stablecoin) and Yearn lends it out on Morpho Blue to borrowers who pledge weETH, Pendle PT, wrapped Bitcoin, and ETH as collateral. The interest rate is set by supply and demand—when borrowing demand is high, your APY rises. Currently the vault earns 14.68% APY with zero idle cash, meaning every dollar is deployed.
Yearn runs this vault with a stablecoin lending focus, concentrating 63% of capital into yvvbUSDC borrowers and splitting the remainder across weETH (18% combined), vbWBTC, and vbETH.
The 14.68% APY comes from 12.48% interest paid by borrowers across these four collateral types (particularly weETH and vbWBTC, both at 100% utilization) plus 2.20% from Morpho incentives and curator rebates on active markets.
The vault is meaningfully exposed to weETH and Pendle PT—liquid restaking and fixed-yield tokens that can trade below fair value during market stress. Morpho has flagged vbUSDT as an unrecognized collateral asset (yellow warning), and the risk score itself is moderate at 40/100. All four collateral types sit at 86% loan-to-liquidation ratio, leaving thin margin before forced sales.
Good fit for yield-chasing stablecoin allocators comfortable with LRT and Pendle depeg risk; avoid if you require exposure to only battle-tested collateral or need true capital preservation.
How the composite risk score breaks down. Every number traces to an explicit input — /methodology documents each factor's formula.
Yearn OG vaults lend underlying assets to markets labeled as moderate risk (-2) by the Yearn team. Optimization across markets is handled automatically via an algorithm developed by Yearn. Supply caps are set based on various factors and continuously monitored by the Yearn team as well.
What you are actually getting paid for, expressed as a share of net APY.
Interest paid by borrowers on Morpho Blue markets the vault supplies into.
Estimated boost from Morpho-side rewards programs and curator rebates active on these markets.
The honest version. Every structural failure mode this vault is exposed to, ranked by severity. If you want to know whether to invest, start here.
Vault has meaningful collateral exposure to liquid restaking tokens. A discount to ETH (>2%) propagates directly through liquidation cascades.
Cap-weighted utilization is 86.0%, leaving little idle buffer. Large same-day redemptions may queue behind active loan repayments.
What this vault is actually exposed to — including dependencies that are not visible from the strategy name.
Every market the vault has supplied into, with current LTV, LLTV, oracle, and IRM. Idle balances are listed explicitly.
Modeled NAV impact under historical and hypothetical tail events. Each impact = − (shock magnitude) × (vault exposure) × (pass-through). Hover the calculator icon for the per-scenario formula.
Tail-case: a vulnerability surfaces in Morpho Blue that affects the vault's largest single market (63% of TVL). Modeled at 50% loss on that exposure; full vault is not assumed at risk since markets are isolated.
Curator routes into a market that develops bad debt or an oracle break. Worst single position is 62.8% of TVL; top-3 concentration is 85%. Modeled at 50% bad-debt recovery on the worst position.
Vault has $1M idle buffer (14% of $4M TVL). $49M of the $50M request queues; the redeemer takes a ~0.87% forced-exit discount weighted across collateral mix plus 12-day TVM cost. $46M of the request exceeds the vault's $4M TVL and cannot be redeemed at all.
92% of TVL is in markets running >85% utilization. Redemption requests on that slice queue until borrowers repay; remaining LPs absorb a small forced-exit discount.
48h sequencer halt on Katana. Collateral drifts while liquidations are frozen; the LLTV buffer absorbs liquidation-clearable moves, the excess accrues as bad debt. Plus a small forced-exit discount on the 92% of TVL sitting in markets above 85% utilization. Total -0.48% NAV loss.
An operator slashing or AVS misbehavior creates a discount in the LRT collateral. 18.5% of TVL is in liquid restaking token (LRT) markets (weighted LLTV 82%). A 20% collateral shock translates to ~0.15% NAV loss after the 18-pt LLTV buffer absorbs liquidation-clearable price moves.
On-chain contracts, control surface, and per-market parameters. The diligence checklist surface — every value here is what an allocator needs to copy into a memo before sizing a deposit.
Market parameters (10)
Oracle, IRM, and LLTV per Morpho Blue market the vault routes into. Click an address to inspect the contract on a block explorer.Curator and parameter changes detected by VaultScanner's snapshot diff. Refreshed every 6 hours.
180 trailing days. APY, TVL, utilization, and an APY drawdown view to show how the vault has actually behaved — not just where it sits today.