Wintermute USDC Select Morpho V2 Risk Assessment for Mainnet USDC Higher Risk Fleet
Block Analitica reviewed the Wintermute USDC Select vault, curated by Armitage, the single vault covered by this RFC for the USDC Higher Risk fleet.
Select shares the same Morpho Vault V2 infrastructure and Owner/Curator Safes as the Wintermute USDC Prime vault, extended with three additional markets: v-wmtUSDC, PT-USDat (redeeming to USDat), and PT-reUSD (redeeming to reUSD). reUSD is already onboarded elsewhere in Lazy Summer and does not add new risk exposure. v-wmtUSDC and USDat are new and require assessment.
Collateral Exposure
| Underlying Market | Collateral | LLTV |
|---|---|---|
| cbBTC/USDC | cbBTC | 86% |
| wstETH/USDC | wstETH | 86% |
| WBTC/USDC | WBTC | 86% |
| v-wmtUSDC/USDC | v-wmtUSDC | 86% |
| PT-USDat-27AUG2026/USDC | PT-USDat | 91.5% |
| reUSD/USDC | reUSD | 91.5% |
| PT-reUSD-25JUN2026/USDC | PT-reUSD | 91.5% |
v-wmtUSDC. Wintermute borrows USDC uncollateralized on Wildcat (9.25% fixed at Armitage’s launch, per Cryptobriefing), wraps the resulting lender claim into v-wmtUSDC, and adds it as Select collateral. Wildcat market tokens rebase upward at the borrow rate, so v-wmtUSDC’s nominal balance climbs over time as long as Wintermute keeps servicing the loan, independent of whether its underlying credit is deteriorating. Block Analitica could not identify a DEX pool or other trading venue for v-wmtUSDC, so without an independent market, there is nothing forcing an earlier markdown if Wintermute’s credit weakens; the balance can keep rising right up to a default, then reprice sharply. It is also the same credit risk counted twice: v-wmtUSDC is a claim on Wintermute’s own solvency, so using it as collateral to borrow more USDC means both positions fail together if Wintermute’s credit weakens, with no separate asset standing between them.
On-chain data as of June 30, 2026: the v-wmtUSDC/USDC market is 99.99% funded by the Select vault itself ($5.24M of $5.24M supply), at 90.30% utilization with only ~$508k liquid. At the vault level, this market is 16.03% of TVL ($5.24M of $32.71M), capped at $25M absolute (76% of current TVL) with a 100% relative cap. Separately, one address holds 92.13% of vault deposits ($30.15M of $32.71M).
Transaction history for the two largest borrowers confirms active leverage looping rather than one-off collateral posting. The largest borrower (26.99% of borrow share) shows a repeating cycle of depositing into Wildcat’s wmtUSDC market, wrapping the claim into v-wmtUSDC, and supplying/borrowing on Morpho via a single Bundler3 multicall, executed roughly a dozen times in succession. The second-largest borrower (19.60% of borrow share) shows the identical pattern, but from a wallet with under $1 in token holdings, first active only 30 days ago, topped up with small ETH amounts by a single funding address before each step, consistent with an automated execution wallet rather than an independent lender. Together these two addresses represent 46.6% of the market’s borrow share.
Put together, the Select vault introduces a market where Armitage/Wintermute-controlled curation policy sets exposure limits, the collateral is linked to Wintermute-related credit, and Wintermute presents liquidation execution as part of the Armitage risk-control stack. The vault’s own deposits fund most of the market, and a large share of borrow demand appears to come from repeated leverage-loop activity rather than broad third-party usage. That combination, rather than the collateral label alone, is why Block Analitica does not consider this exposure suitable for curator-delegated onboarding at this stage.
The RFC claims Wintermute “can execute liquidations directly for every market the vault supports rather than relying on third-party liquidators,” with automated deallocation on signs of stress. For v-wmtUSDC, the liquidator and the insolvency event are the same entity, so this does not hold as a backstop for that market.
USDat (via PT-USDat). New exposure. USDat is Saturn Credit’s stablecoin: it is minted and redeemed 1:1 with USDC through Saturn’s interface, but its reserves target 100% $M, M0’s tokenized US Treasury-bill product, rather than holding USDC, per Saturn’s own documentation. Block Analitica confirmed this directly on-chain: the USDat contract holds 111.33M $M against a USDat total supply of 111.30M, a matching 1:1 balance. Saturn Credit launched on mainnet on April 8, 2026, per Stacy Muur’s coverage; it has not operated through a full market cycle or stress event.
Governance is identical to Prime. Per safe.yaudit.dev, the Curator Safe (0x4687e45bb5518a995913a24bb2816fe2031d74d8, 3-of-5) scores 92/100 Low Risk, deployed April 23, 2026. The Owner Safe (0xb83a77677c51aaf6c45b0b64199eae6938559e5e, 4-of-6) scores 87/100 Low Risk, deployed April 27, 2026. Both are EOA-only signers, with critical curator actions timelocked 3-7 days.
Fleet Classification
- Wintermute USDC Select (
0xA2EAaD0D586cF9FD73bb2c09cF6A7E3e187D68cd): cbBTC, wstETH, and WBTC are blue-chip. reUSD sits within the fleet’s risk appetite as an already-onboarded asset. USDat is new, but its Treasury-bill backing was confirmed directly on-chain; the residual risk is Saturn Credit’s youth as an issuer. v-wmtUSDC is the issue, for the reasons above.
Conclusion
Block Analitica does not recommend onboarding Wintermute USDC Select to the curated USDC HR fleet at this stage, given the v-wmtUSDC findings above; the risk profile is not justified by the vault’s current ~4.1% yield. This structure may be more appropriate for DAO-managed fleets, where governance can accept the risk directly rather than through curator delegation.
This assessment reflects publicly available and on-chain data as of June 30-July 1, 2026, and should be reverified before any governance action.