[ARFC] Onboard eUSDe August expiry PT tokens on Aave V3 Core Instance

[ARFC] Onboard eUSDe August expiry PT tokens on Aave V3 Core Instance

Author: ACI

Date: 2025-05-15

Risk Parameters provided by Risk Service Providers 2025-05-19, ARFC updated.

Summary

This ARFC proposes to onboard eUSDe August expiry PT tokens on Aave V3 Core Instance.

This proposal will be a Direct to AIP.

Motivation

We propose onboarding the 14th August expiry PT token:

  • PT-eUSDE-14AUG2025

Specification

PT-eUSDE-14AUG2025: PendlePrincipalToken | Address 0x14bdc3a3ae09f5518b923b69489cbcafb238e617 | Etherscan

Risk Parameters

Risk parameters will be provided by Risk Service Providers in the ARFC and will be updated accordingly.

Specification

Parameter Value
Asset PT-eUSDe-14AUG2025
Isolation Mode No
Borrowable No
Collateral Enabled Yes
Supply Cap 100,000,000
Borrow Cap -
Debt Ceiling -
LTV 0.05%
LT 0.1%
Liquidation Penalty 7.50%
Liquidation Protocol Fee 10.00%
E-Mode Categories PT-eUSDe-14AUG2025 Stablecoins, PT-eUSDe-14AUG2025 USDe

PT-eUSDe Stablecoins E-mode

Asset PT-eUSDe USDC USDT USDS
Collateral Yes No No No
Borrowable No Yes Yes Yes
LTV Subject to Risk Oracle - - -
LT Subject to Risk Oracle - - -
Liquidation Bonus Subject to Risk Oracle - - -

PT-eUSDe USDe E-mode

Asset PT-eUSDe USDe
Collateral Yes No
Borrowable No Yes
LTV Subject to Risk Oracle -
LT Subject to Risk Oracle -
Liquidation Bonus Subject to Risk Oracle -

Initial E-mode Risk Oracle

Parameter Value Value
E-Mode Stablecoin USDe
LTV 87.1% 89%
LT 90.1% 91%
LB 4.1% 3.1%

Linear Discount Rate Oracle

Parameter Value
discountRatePerYear (Initial) 9.037%
maxDiscountRatePerYear 29.781%

Useful Links

[TEMP CHECK] Onboard Pendle PT tokens to Aave V3 Core Instance

[ARFC] Onboard eUSDe PT Tokens to Aave v3 Core Instance

Disclaimer

ACI is not directly affiliated with Pendle and did not receive compensation for creating this proposal. Some ACI employees may hold Pendle tokens.

Next Steps

  1. Publish ARFC to gather community and Service Providers feedback.
  2. Publish an AIP vote for final confirmation and enforcement of the proposal.

Copyright

Copyright and related rights waived under CCO

3 Likes

Overview

In alignment with our Principal Token Risk Oracle framework—outlined in detail here—we present our risk parameter recommendations for the proposed maturity and underlying asset listing: PT-eUSDE-14AUG2025. Leveraging the dynamic linear discount rate oracle implementation, we also provide our recommended values for initialDiscountRatePerYear and maxDiscountRatePerYear, derived from the extended methodology detailed here.

Risk Oracle Parameter Evolution

Stablecoin E-mode

Through our rigorous quantification of the algorithm, we find that the integration risk decays as the PT approaches maturity. This dynamic justifies the use of progressively more liberal risk parameters over time. Taking into account the underlying proposed configuration of an eUSDe stablecoins E-mode within Aave, we outline the projected evolution of the LT, LTV and LB, with the initial parameterization approximately as follows:

LTV: 87.1%

LT: 90.1%

LB: 4.1%

Note that this parameterization explicitly refers to E-mode such that the PT can only borrow correlated assets (USDC, USDT and USDS), while effectively disallowing uncorrelated debt assets to be borrowed. The LTV and LT will remain constant throughout given the relatively short time until maturity, as is capped by the underlying, with the LB continuing to decay over time until maturity.

The yield trading component of the PT stems from Ethereal’s Season Zero Points with a 1.6x multiplier, as well as 50x Ethena points, up from 1x and 30x, respectively, in the prior expiry. Since the underlying asset for PT-eUSDe is USDe, the oracle configuration relies on the PT linear discount rate oracle implementation, combined with the USDT/USD pricing of USDe. Accordingly, the underlying configuration will be defined with a minimum liquidation bonus of 2% and a maximum liquidation threshold of 93% for the underlying, following our recommended parameterization for eUSDe stablecoins in E-mode here.

Safeguards from Donation Attack

As the underlying input asset (SY) for the PT is eUSDe, the effective valuation for the SY is implicitly defined as:

eUSDe(SY) Ă— PT Price Ă— (1 / eUSDe/USDe Exchange Rate)

This expression is intentionally redundant to emphasize the anchoring of value to USDe as the reference unit of account. Under this construction, all inflation-derived value accrual is routed to YT holders, analogous to yield being realized via exchange rate appreciation.

In expectation, the eUSDe/USDe exchange rate should remain stable; however, under adversarial conditions such as a donation attack, the system design ensures that the protocol remains insulated from PT mispricing. YT holders fully capture the “appreciation” induced by the inflation shock.

Such a scenario would mechanically drive a repricing event: the implied yield spikes as YT value inflates, resulting in a collapse of PT prices toward their lower bound (i.e., floor price), likely accompanied by significant outflows from PTs, increased capital inflows to YTs and rapid redemption of the underlying SY assets.

Despite these dynamics, the risk parameterization—as defined via protocol-level invariants and circuit-breaker thresholds—remains mathematically robust. It continues to safeguard against bad debt accrual and enables the system to freeze new activity in a deterministic and risk-contained manner, thereby preserving solvency and protocol integrity.

USDe E-mode

To further enhance capital efficiency, we propose the introduction of a dedicated USDe E-mode for PT-eUSDE-14AUG2025. Given that both the PT token’s underlying asset (USDe) and the debt asset share the same collateral base, the risk parameterization should not be constrained by typical underlying asset considerations. Instead, the parameterization should be driven by the Pendle AMM’s liquidity dynamics, aligning more closely with the PT’s inherent pricing structure. We outline the projected evolution of the LT, LTV and LB, with the initial parameterization approximately as follows:

LTV: 89%

LT: 91%

LB: 3.1%

This approach is justified by the correlation between the PT’s underlying and the debt asset, as both are effectively anchored to the same stable asset, USDe. As a result, this E-mode would allow for more efficient capital utilization.

This configuration aligns with our broader Principal Token Risk Oracle framework, which emphasizes parameter flexibility for pairs where the PT’s underlying asset is also the debt asset, ultimately supporting deeper liquidity and optimized capital efficiency.

Initial Discount Rate Per Year and Maximum Discount Rate Per Year

Based on historical observed data and the pricing configuration of the market, our initial recommendations for the discountRatePerYear and maxDiscountRatePerYear are as follows:

Initial discountRatePerYear: 9.037%

maxDiscountRatePerYear: 29.781%

If pricing dynamics change until its listing, such that discountRatePerYear will require a refresh, we will institute such a change accordingly upon listing.

On-chain Liquidity and Initial Cap

Given the nature of the relevant stablecoin debt assets, effective risk management necessitates leveraging on-chain liquidity for both the underlying asset and the Pendle AMM itself. In this context, PT-eUSDe-14AUG2025 has exhibited substantial on-chain liquidity relative to its floating PT TVL, with SY liquidity in the AMM scaling rapidly to $35M since inception just one week ago.

The plot below represents the amount of liquidity available under 3% slippage as the market approaches expiry, given the current liquidity distribution in the AMM. As the market matures and moves closer to expiry, the slippage associated with swapping PT becomes less extreme.

The PT token, with a current total supply of 21 million, benefits from deep on-chain liquidity in the Pendle AMM. At the current time to maturity, this liquidity supports trades of up to $30 million with less than 3% slippage.

Underlying Oracle

As the underlying PT-eUSDe is anchored to USDe, we recommend leveraging the Capped USDT/USD feed as the underlying ASSET_TO_USD_AGGREGATOR within the PT-USDe PendlePriceCapAdapter.

Specification

Parameter Value
Asset PT-eUSDe-14AUG2025
Isolation Mode No
Borrowable No
Collateral Enabled Yes
Supply Cap 100,000,000
Borrow Cap -
Debt Ceiling -
LTV 0.05%
LT 0.1%
Liquidation Penalty 7.50%
Liquidation Protocol Fee 10.00%
E-Mode Categories PT-eUSDe-14AUG2025 Stablecoins, PT-eUSDe-14AUG2025 USDe

PT-eUSDe Stablecoins E-mode

Asset PT-eUSDe USDC USDT USDS
Collateral Yes No No No
Borrowable No Yes Yes Yes
LTV Subject to Risk Oracle - - -
LT Subject to Risk Oracle - - -
Liquidation Bonus Subject to Risk Oracle - - -

PT-eUSDe USDe E-mode

Asset PT-eUSDe USDe
Collateral Yes No
Borrowable No Yes
LTV Subject to Risk Oracle -
LT Subject to Risk Oracle -
Liquidation Bonus Subject to Risk Oracle -

Initial E-mode Risk Oracle

Parameter Value Value
E-Mode Stablecoin USDe
LTV 87.1% 89%
LT 90.1% 91%
LB 4.1% 3.1%

Linear Discount Rate Oracle

Parameter Value
discountRatePerYear (Initial) 9.037%
maxDiscountRatePerYear 29.781%

Disclaimer

Chaos Labs has not been compensated by any third party for publishing this recommendation.

Copyright

Copyright and related rights waived via CC0

2 Likes

Summary

LlamaRisk supports the ARFC to onboard newly deployed PT-eUSDe-14AUG2025 to the Aave v3 Core instance. The August maturity pool has been deployed very recently (May 14th, 2025) with 88 days remaining until the maturity. Therefore, integration efforts are expected to be justified by the prevalent user interest, leaving 70-80 days of market availability after deployment.

Analysis indicates that the underlying eUSDe token’s yield stems from accruing Ethereal points, with a future token launch potentially impacting their value. The PT-eUSDe yield is fixed based on a purchase discount. Demand is driven by yield and speculative interest in future incentives.

Implied PT yield has been moderately fluctuating in the older May maturity PT pool, mirroring broader market conditions and changing interest in the speculative points program. The Ethereal Season Zero points program is nearing its conclusion, however, Season One has been announced to commence during the maturity of this new PT-eUSDe market.

ChaosLabs will provide specific parameter recommendations and details regarding the pricing oracle in a separate update. Nonetheless, the exact risk parameters should be re-evaluated just before the AIP phase, at the time when the PT pool bootstrapping period will have ended and implied/LP yield volatility will have subsided.

Assessment of PT base asset: Link
Considered PT asset maturities: PT-eUSDe-14AUG2025

Asset State

Underlying Yield Source

The yield mechanism for eUSDe involves holding the token to accrue Ethereal points, which provide an additional layer of rewards, potentially convertible to tokens or other benefits in future launches. It should be noted that the value and longevity of Ethereal points depend on Ethereal’s success and tokenomics, with a token launch expected in the coming months.

For eUSDe PT tokens, the yield is implied through buying at a discount and redeeming at par value at maturity, as is typical in Pendle Finance’s principal token structure. The PT token represents the right to redeem the underlying eUSDe at maturity, capturing the fixed yield based on the discount at purchase.

Underlying utility

Investor demand for eUSDe and its PT instrument stems primarily from yield considerations and speculative positioning around future incentives. In February and March, the older May maturity Pendle pool offered headline APY close to 14%; since then, returns have been trending at a 3-5% level for Pendle liquidity providers and 7-10% for PT holders. For this new August maturity pool, the yields are still more volatile, fluctuating between 6 and 10% for LPs and 9-10% for PT holders.

At these yield levels, participants remain attracted by the possibility of amplifying their Ethena rewards multiplier, which can translate into additional Ethereal points and potential future airdrops or related benefits. Finally, eUSDe benefits indirectly from the broader market footprint of its underlying asset, USDe, whose established liquidity base helps draw capital into both the spot token and PT derivatives.

Underlying Stability

The underlying eUSDe is a receipt token for USDe deposited in Ethereal’s spot and perpetual trading platform. At the time of writing, Ethereal DEX has not been launched yet, and USDe deposits serve purely for bootstrapping the initial supply in the platform. The USDe deposits can be redeemed at a 1:1 ratio at any time without a cooldown period. Moreover, the deposits in the vault are idle and are not used as a risk coverage layer for the protocol. All of this makes the eUSDe token inherit equivalent stability risks as the USDe token. Therefore, PT asset’s implied yield is based purely on the nature of the speculative rewards program.

In turn, the secondary market peg of USDe has remained stable after the last stress instance during the Bybit exploit incident. The secondary market discount of USDe has not exceeded 20 bps since then.


Source: LlamaRisk, May 17th, 2025

Total Supply

Since the beginning of April, as the older May maturity pool has matured, the overall SY-eUSDe supply has subdued at ~1.1B. The deployment of the new August maturity pool did not bring additional SY token supply, instead simply allowed the users migrate to the new pool. Over the 3 days since pool’s deployment, it has attracted $41.33M of liquidity, mostly in SY-eUSDe tokens. Again, this liquidity has mostly migrated from the May maturity pool. Overall, the total PT-eUSDe-14AUG2025 supply is currently at 17M, expected to increase more aggressively as the older May pool approaches maturity in 11 days.


Source: LlamaRisk, May 17th, 2025

Holders

Due to the recency of the August PT pool deployment, PT-eUSDe-14AUG2025 token distribution is concentrated within the Pendle liquidity pool itself. Other holders are individuals, however, their identities cannot be attributed to a particular entity/project/team. PT token supply has not been bootstrapped on other lending platforms yet.


Source: Etherscan, May 17th, 2025

Liquidity

As mentioned above, the PT-eUSDe-14AUG2025 pool maintains an estimated liquidity of $41.37M. Around 78.6% of that amount is currently held in SY-eUSDe, while the remaining 21.4% is in PT-eUSDe tokens.


Source: Pendle, May 17th, 2025

The market’s order book composition indicates skewed order composition, with a bid-ask spread at 1.2% of implied yield. The PT demand is much lower than the ask amount. Nonetheless, the market is expected to become more balanced as more users migrate towards this PT pool.


Source: Pendle, May 17th, 2025

The PT-eUSDe-14AUG2025 pool has the following parameters:

Parameter Value
Liquidity Yield Range 5% - 28%
Fee Tier 0.127%
Input Tokens $USDe, $eUSDe
Output Tokens $USDe, $eUSDe
Reward Tokens $PENDLE

Market State

Price and Yield

At the time of writing, there remain 88 days until the pool’s maturity. The implied PT yield is at 9.53% APY with the PT price of 0.9782 eUSDe. The implied PT yield is currently consistent with the May maturity pool, indicating stable future yield expectations.


Source: LlamaRisk, May 17th, 2025

Maturities

As mentioned, two main PT-eUSDe pools with different maturities are available, which suggests that the Ethereal eUSDe points program is expected to remain of high demand. No other PT pools on different chains are available.


Source: Pendle, May 17th, 2025

Integrated Venues

PT Ethereal PT-eUSDe-14AUG2025 is not present on other lending platforms yet. This means that there is a high potential for Aave to capture the majority of inflows as this asset is deployed on Core market. We have also seen large demand for the May maturity PT token on Aave, which further confirms the utility of this token on Aave’s platform.

Recommendations

Aave Market Parameters

Presented jointly with @ChaosLabs. Other parameters will be handled via Risk Oracle. The final parameters could still change at the AIP stage due to the PT pool still being at the price discovery and bootstrapping phase.

Price Feed

For pricing PT tokens on Aave, a specific dynamic linear discount rate oracle has been developed by BGD Labs and PT-eUSDe tokens would be priced using it. In addition, due to full direct redemption availability, eUSDe would be priced on par with USDe, therefore using USDe’s standard pricing mechanism on Aave’s markets.

Disclaimer

This review was independently prepared by LlamaRisk, a community-led decentralized organization funded in part by the Aave DAO. LlamaRisk serves as Ethena’s Risk Committee member and an independent attestor of Ethena’s PoR. LlamaRisk did not receive compensation from the protocol(s) or their affiliated entities for this work.

The information provided should not be construed as legal, financial, tax, or professional advice.

2 Likes

Thank you @LlamaRisk and @ChaosLabs , proposal has been updated accordingly.

1 Like