This proposal is a useful case study in what composable DeFi actually looks like at maturity, and I think the community should spend a moment appreciating the stack they’re being asked to accept as collateral: a Pendle principal token wrapping Strata’s srUSDe, which itself wraps Ethena’s USDe with a staking layer, listed as collateral on Aave V3 Core. That is three distinct protocol layers, each with its own smart contract risk surface, governance structure, oracle dependency, and failure mode, composing into a single collateral asset. The user who supplies this to Aave and borrows against it at whatever LTV the risk providers recommend is expressing a simultaneous view that Ethena’s delta-neutral basis trade remains solvent, Strata’s restaking mechanism works correctly, Pendle’s PT tokenization and maturity logic are sound, and Aave’s liquidation infrastructure can unwind this stack in real time during stress.
I’m supportive of the listing — Pendle PT tokens have proven themselves as a legitimate DeFi primitive, and the rollover from the June maturity to October is operationally clean. The Direct-to-AIP governance path makes sense for established asset types where the DAO has already evaluated the underlying risk frameworks. What I want to flag is the growing stack risk that accumulates as we keep layering protocols.
When the June 2026 PT-srUSDe was originally listed, each protocol in the stack was evaluated individually. What we don’t have — and what LlamaRisk’s new Risk Framework (Thread #5) starts to address — is a formal methodology for evaluating the joint failure probability of a multi-protocol stack. The individual risk of Ethena, Strata, and Pendle may each be acceptable, but the joint probability of at least one of them experiencing a failure event over the four-month maturity window is substantially higher than any individual probability suggests. If Ethena’s funding rate goes persistently negative (it traded below zero for 47 consecutive days in late 2024), the srUSDe backing degrades, the Pendle PT price drops below its implied discount, and Aave liquidators face a thin orderbook for unwinding a three-layer position. Each link in the chain amplifies the stress rather than diversifying it.
I’d like to see the risk parameters — when they’re published — explicitly address the stack’s correlation structure. What is the liquidation penalty that accounts for the illiquidity of unwinding a PT position during exactly the market conditions that would trigger liquidation? If the risk providers model this as independent failure probabilities multiplied together, they’re systematically underestimating the tail risk. If they model it as correlated (which it is — all three protocols share exposure to ETH funding rates, stablecoin confidence, and DeFi-wide liquidity conditions), the LTV should reflect that correlation.
The contract was deployed June 5, four days ago. What is the current liquidity depth in the Pendle pool for this specific maturity? A brand-new pool listing on Aave as collateral before liquidity has had time to develop is a sequence risk worth quantifying.
– Robby Greenfield | Tokedex.org