[Direct-to-AIP] Onboard PT-USDG-24SEP2026 to Aave V4 on Ethereum

Summary

This proposal onboards PT-USDG-24SEP2026 to Aave V4 on Ethereum.

Motivation

Pendle PT collateral has become an established use case across Aave markets, with consistent demand from users seeking fixed-rate exposure and structured yield strategies through principal tokens.

Aave V4 is well suited for this type of collateral. The Hub-and-Spoke design can support growth in Pendle-based strategies while keeping exposure bounded through Spoke configuration, borrowable-token selection, add caps, draw caps, oracle configuration, and risk parameters.

Onboarding PT-USDG-24SEP2026 continues support for an existing source of demand while helping grow fixed-rate collateral usage on Aave V4.

Specification

This proposal adds PT-USDG-24SEP2026 to Aave V4 on Ethereum.

Asset: PT-USDG-24SEP2026

Network: Ethereum

PT token address: 0xc1906aecf868749a2dee203f59b904c0cf212140

Underlying asset: USDG

Underlying asset address: 0xe343167631d89b6ffc58b88d6b7fb0228795491d

Maturity: September 24, 2026

Final V4 risk parameters will be provided by LlamaRisk.

Next Steps

If there is community support, an AIP payload will be proposed to onboard PT-USDG-24SEP2026 to Aave V4 on Ethereum according to the configuration suggested by LlamaRisk.

Disclaimer

Aave Labs is presenting this proposal as a service provider to the Aave DAO under the budget approved by the Aave Will Win framework. Aave Labs is contributing this proposal as part of its approved scope of work in support of DAO operations.

Copyright

Copyright and related rights waived via CC0.

I support onboarding PT-USDG-24SEP2026 to Aave V4 on Ethereum. USDG is one of the stronger stablecoin underlyings available in the PT market — Paxos regulation, clean reserve composition, consistent peg — and the V4 Hub-and-Spoke architecture gives the DAO the isolation tools to manage maturity-specific risk without contaminating core markets.

That said, the shift from V3 Core to V4, and the extension from May to September maturity, introduce structural considerations worth naming before LlamaRisk publishes parameters.


What makes this listing straightforward

Three things reduce the risk surface relative to other PT onboarding proposals:

1. USDG is a regulatory best-case stablecoin underlying. Paxos Digital Singapore is supervised by MAS. Paxos Issuance Europe falls under MiCA. Reserves are cash deposits and US Treasuries under 3-month maturity, with monthly attestations by Enrome LLP. The Chainlink USDG/USD feed has shown a maximum daily discount of ~0.14% since inception. For a stablecoin backing a fixed-rate instrument, that peg stability directly reduces the risk that the PT’s face value deviates from its redemption value at maturity.

2. The prior V3 listing validated market demand. PT-USDG-28MAY2026 was onboarded to Aave V3 Core in March. LlamaRisk’s assessment at the time documented ~$74M in Pendle pool liquidity, ~$95M in the SY-USDG wrapper, and a clean underlying yield structure (NIM rate pass-through + Paxos incentives + PENDLE incentives). The May maturity is now days from expiry. A September rollover is the expected lifecycle for an asset class with proven demand.

3. V4’s Spoke design bounds the exposure. The Hub-and-Spoke architecture lets the DAO set add caps, draw caps, and borrowable-token selection at the spoke level. If September maturity liquidity doesn’t develop as expected, the DAO can tighten parameters without affecting other V4 markets. This is the right venue for onboarding fixed-rate collateral.


What deserves attention before parameter finalization

Maturity extension to ~127 days out. The May listing had ~59 days to maturity at the time of LlamaRisk’s assessment. September 24 is approximately 127 days from today. Longer time-to-maturity means more duration risk — the PT trades at a deeper discount to par, and the market price is more sensitive to interest rate changes and liquidity conditions during the intervening period.

Our Asset Safety Tier (AST) v2.0 framework added Factor 8 (Time-to-Maturity Risk Window) specifically to address this gap in PT collateral evaluation:

  • ≤30 days to maturity: Score 0 (lowest risk — natural convergence to par is imminent)
  • 31–180 days: Score 1 (moderate — extended exposure window before redemption)
  • >180 days: Score 2 (highest — prolonged duration risk)

PT-USDG-24SEP2026 falls in the 31–180 day band at listing, moving toward the 0 band as maturity approaches. LTV parameters should reflect this duration curve — starting more conservative and potentially relaxable via Risk Stewards as the maturity date approaches.

September liquidity is unproven. The May pool had ~$74M liquidity by the time it was assessed. The September pool was deployed recently and its liquidity depth needs to be evaluated at the time LlamaRisk publishes parameters. Pool depth directly affects liquidation efficiency — if a large position needs to be unwound, the PT needs to trade without excessive slippage. The prior V3 listing had a well-established pool to reference; this one may not yet.

V4 oracle configuration for PT assets. The proposal notes that risk parameters will be provided by LlamaRisk, which is standard. One area worth explicit attention: V4’s oracle architecture for PT collateral should account for the discount-to-par convergence curve. PT-USDG will trade below $1 and accrete toward par over time. The oracle needs to reflect the theoretical redemption value path, not just spot market price, to avoid spurious liquidations as the PT naturally converges.


Position

Support. The underlying asset is clean, the market has demonstrated demand through the prior V3 listing, and V4’s Spoke architecture provides the right isolation tools. LlamaRisk should factor in the extended maturity timeline and current September pool liquidity depth when setting initial parameters.

– Robby | Tokedex.org

PT-USDG-24SEP2026: Aave V4 Plus Hub Onboarding

Summary

LlamaRisk supports listing PT-USDG-24SEP2026 on the Aave V4 Plus Hub via a new dedicated USDG Correlated spoke. At the time of this analysis, the asset has approximately 121 days remaining until maturity. The new maturity provides a rollover destination for users currently holding PT-USDG-28MAY2026 collateral on Aave V3 Core as that maturity approaches expiry on May 28, 2026.

The 24SEP2026 Pendle pool currently holds approximately $99.7K in liquidity, we support the onboarding conditionally that the liquidity from the May 28 pool migrates to the PT-USDG-24SEP2026, as its normal of most Pendle pools. The prior maturity PT-USDG-28MAY2026 anchors approximately $105.1M of collateral supply on Aave V3 Core, the demand cohort positioned to rotate into successor pools as the May expiry approaches.

Assessment of PT base asset: Link

Assessment of Pendle PTs: Link

Considered PT asset maturities: PT-USDG-24SEP2026

Architecture

In Aave V4, every market is structured as a Hub, plus one or more Spokes. The Plus Hub today contains two Spokes (Ethena Ecosystem and Ethena Correlated). The proposed addition introduces a third Spoke on Plus, dedicated to PT-USDG collateral against a single borrowable asset, USDG for the initial deployment period.


Source: LlamaRisk, May 26, 2026

USDG is already an established asset on the Core Hub, with native supply, native borrow, and listings across the Main, Gold, and Forex spokes. The proposed listing does not introduce USDG as a new asset to V4; it instead authorizes the new Plus / USDG Correlated spoke to draw from Core’s existing USDG inventory through a cross-hub credit line. From the depositor side, USDG suppliers continue to deposit into the Core Hub. From the borrower side, PT-USDG holders supply collateral to the Plus / USDG Correlated spoke and borrow USDG, which is sourced through the credit line at the Hub level. The Draw Cap on Core for the Plus / USDG Correlated spoke acts as the explicit containment boundary for Core USDG suppliers’ exposure to the new spoke.

The spoke is designated as correlated, enabling tighter Collateral Factors than the equivalent general-purpose configuration. PT-USDG collateral redeems 1:1 to USDG at maturity.

The arrangement parallels the existing Ethena Correlated spoke on Plus Hub, where PT-sUSDE and PT-USDe are paired against USDe borrow within the Ethena correlation group. As subsequent PT-USDG maturities are listed, they would be added to this same USDG Correlated spoke, providing a rollover destination for collateral suppliers as each maturity approaches expiry.

Asset State

Asset Growth

USDG circulating supply across all chains stands at approximately $2.63B as of May 26, 2026, up from approximately $1.70B at the time of the V3 Core onboarding assessment on March 30, 2026. On Ethereum, the circulating balance is approximately $480M, broadly stable since the March assessment ($450M), with the remainder distributed across other Global Dollar Network chains (predominantly X Layer and Solana).


Source: LlamaRisk, May 26, 2026

Underlying Stability

USDG is issued by Paxos Digital Singapore and Paxos Issuance Europe and is backed 1:1 by cash deposits, short-dated US Treasury instruments, overcollateralized reverse repos, and institutional stable NAV money market funds held in segregated reserve accounts. Monthly reserve attestation reports are published by Enrome LLP, an independent Singapore-based firm.

The market price of USDG stands at $0.9997 against the Chainlink USDG/USD feed, within a few basis points of par. No structural anomalies appear in the price series since feed inception.

Source: LlamaRisk, May 26, 2026

Underlying Yield Source

USDG is non-yield-bearing by design; yield is passed through to holders via the Pendle PT structure or through Global Dollar Network (GDN) integrations. For PT-USDG, the fixed yield is implied by purchasing the principal token at a discount to its notional 1 USDG face value and redeeming it 1:1 for USDG at maturity. The discount accretes to par over time following the standard Pendle PT structure, while the floating component is stripped to the corresponding yield token (YT).

The current underlying USDG yield reported by Pendle is 3.11%, reflecting the yield component distributed through GDN to participating platforms.

Market Analysis

Total Supply

The PT-USDG-24SEP2026 Pendle market holds approximately $99.7K in pool liquidity, consisting of 74,752 SY-USDG and 25,300 PT-USDG.

The SY-USDG (Standardized Yield) wrapper, which represents all USDG deposited into the Pendle system across maturities, holds approximately 209.6M USDG. Aggregate PT-USDG-24SEP2026 outstanding is 25,300 tokens, with ~100% currently residing inside the AMM (no off-pool carry-trade positions). For context, PT-USDG-28MAY2026 supports approximately $105.1M of collateral supply on Aave V3 Core, the demand cohort positioned to rotate into the successor maturity as the May 28 expiry approaches.

Source: LlamaRisk, May 26, 2026

Pool Composition

PT-USDG-24SEP2026 Pool:

  • Total Liquidity: approximately $99.7K
  • SY-USDG: 74,752 (74.7%)
  • PT-USDG-24SEP2026: 25,300 (25.3%)

The 74.7% / 25.3% SY/PT split is consistent with proportional LP additions in the absence of swap flow.


Source: LlamaRisk, May 26, 2026

Price and Yield

The implied yield for PT-USDG-24SEP2026 stands at 4.50%, against an underlying USDG yield of 3.11%, with the PT trading at a 1.44% discount to par over the 121-day window to maturity. The 139 bps spread reflects the AMM’s structural anchor in the absence of trading flow.


Source: LlamaRisk, May 26, 2026

The LP base APY stands at 3.46%, with a max boosted APY of 6.96% for vePENDLE holders.


Source: LlamaRisk, May 26, 2026

PT Yield in Context

On Aave V3 Ethereum mainnet, USDT (3.51%) and USDe (3.23%) variable borrow rates sit below the PT implied yield of 4.50%, producing positive carry of approximately 99 bps and 127 bps respectively, while USDC (4.73%) and USDS (5.67%) sit above, producing negative carry of 23 bps and 117 bps. PT-backed leveraged borrowing is currently profitable against USDT and USDe at prevailing rates and unprofitable against USDC and USDS.

Price and Implied APY Projection

The chart projects the PT price trajectory and implied APY from the snapshot through maturity, with the AMM’s structural ceiling at the 96% proportion bound shown as dashed lines. The initial discount rate of 4.50% tracks the current implied yield of 4.50%.


Source: LlamaRisk, May 26, 2026

Maturities

PT-USDG-24SEP2026 is the next listed maturity in the USDG-backed PT series alongside the currently active PT-USDG-28MAY2026, which matures on May 28, 2026. With the May maturity within days of expiry, the September pool serves as the rollover destination for collateral suppliers seeking to maintain fixed-yield exposure. Subsequent maturities listed onto the USDG Correlated spoke would provide further rollover destinations as the September pool approaches its own expiry.

Recommendations

Parameter Recommendation

Spoke-level liquidation configuration

Spoke Target Health Factor HF for Max Bonus Liquidation Bonus Factor
USDG Correlated (new) 1.0277 0.99 1

Reserve-level parameters

We propose enabling the USDG Correlated Spoke to draw liquidity from the Core Hub in order to facilitate the strategy. As demand expands, we would enable other Plus Hub stablecoins to be borrowed against PT-USDG as well as onboard USDG to Plus Hub natively.

Parameter PT-USDG-24SEP2026 USDG
Asset role Collateral only Borrow only (credit line from Core Hub)
Suppliable yes no
Collateral yes no
Borrowable no yes
Add Cap 15,000,000 -
Draw Cap - 13,000,000
Collateral Factor 95% -
Max Liquidation Bonus 2% -
Liquidation Fee 10% -
Collateral Risk score 0% -

Price Feed Recommendation

For pricing PT-USDG-24SEP2026 on Aave, the dynamic linear discount rate oracle is recommended. The same oracle template currently in use for PT-USDG-28MAY2026 on Aave V3 Core can be reused for this deployment.

The oracle prices the PT as a zero-coupon bond against a capped underlying Chainlink reference (USDG/USD fixed at $1), applying a linear discount that decays to par at maturity. The discount rate is bounded above by the maxDiscountRatePerYear parameter, providing a deterministic price floor against adverse market dislocations.

Discount Rate Parameters

Parameter PT-USDG-24SEP2026
initialDiscountRatePerYear 4.50%
maxDiscountRatePerYear 10.38%

Disclaimer

This review was independently prepared by LlamaRisk, a DeFi risk service provider funded in part by the Aave DAO. LlamaRisk did not receive compensation from the protocol(s) or their affiliated entities for this work. The information should not be construed as legal, financial, tax, or professional advice.

This addendum follows the original PT-USDG-24SEP2026 onboarding proposal. It revises the Aave V4 market structure for the listing, which moves from the originally proposed Plus Hub spoke to a dedicated Paxos Hub. The asset assessment, market analysis, and price feed recommendation in the original proposal are unchanged. The sections below detail the updated market structure and the corresponding reserve configuration.

Updated Architecture

PT-USDG-24SEP2026 is listed on a dedicated Paxos Hub with a single Stablecoin Correlated spoke, the renamed form of the USDG Correlated spoke in the original proposal. Aave V4 supports multiple Liquidity Hubs on a network, each holding its own asset pool and overseeing its own spokes. The Paxos Hub joins the Core, Plus, and Prime hubs on Ethereum.


Source: LlamaRisk, June 2026

The Paxos Hub holds native USDC and USDT liquidity alongside PT-USDG collateral. USDG is sourced from the Core Hub through a cross-hub credit line, where it surfaces as coreUSDG. The single Stablecoin Correlated spoke carries PT-USDG as its sole collateral, with USDC, USDT, and USDG borrowable. The spoke is configured as a correlated stablecoin group, which supports tighter Collateral Factors than a general-purpose spoke. PT-USDG redeems 1:1 to USDG at maturity, and USDC, USDT, and USDG are dollar-denominated stablecoins, placing the collateral and the borrowable set within a single correlated group.

Two elements distinguish this structure from the original proposal, which placed the listing on the Plus Hub through a spoke borrowing USDG. First, the listing venue is a dedicated hub. Second, the borrowable set comprises three correlated stablecoins, with USDC and USDT supplied natively to the Paxos Hub and USDG drawn from the Core Hub through the credit line.

A dedicated hub provides clean risk isolation for USDG-correlated collateral. The market is contained within the Paxos Hub, separate from the Ethena ecosystem markets on the Plus Hub, while Core Hub exposure remains limited to the USDG credit line and its Draw Cap. The venue also positions the hub to host additional USDG-correlated assets over time.

Subsequent PT-USDG maturities would be added to the same spoke, providing rollover destinations for collateral suppliers as each maturity approaches expiry. The May 28, 2026 maturity has expired; the PT-USDG-24SEP2026 pool now holds approximately USD 4.15M in liquidity, up from approximately USD 99.7K at the original assessment, confirming the migration of liquidity into the September maturity.

Parameter Recommendation

Spoke-level liquidation configuration

Spoke Target Health Factor HF for Max Bonus Liquidation Bonus Factor
Stablecoin Correlated (new) 1.0277 0.99 1

Reserve-level parameters

Parameter PT-USDG-24SEP2026 USDC USDT USDG
Asset role Collateral only Borrowable Borrowable Borrowable
Source Hub Paxos Paxos Paxos Core (credit line)
Suppliable yes yes yes no
Collateral yes no no no
Borrowable no yes yes yes
Add Cap 15,000,000 13,000,000 13,000,000 -
Draw Cap - 13,000,000 13,000,000 30,000,000
Collateral Factor 95% - - -
Max Liquidation Bonus 2% - - -
Liquidation Fee 10% - - -
Collateral Risk score 0% - - -

Draw Caps in the table share one mechanism but differ in source hub. USDC and USDT draw against native Paxos Hub liquidity; USDG draws from the Core Hub through the cross-hub credit line. Given that the PT underlying is USDG, the credit line does not materially alter the risk profile of USDG deposits on Core. At the 95% Collateral Factor, the 15M PT-USDG Add Cap supports up to approximately 14.25M of aggregate borrowing, below the 56M sum of the three Draw Caps, so the collateral cap binds total borrowing, while each Draw Cap independently binds single-asset concentration.

Interest rate configuration

Parameter USDC USDT
Base Borrow Rate 0% 0%
Optimal Utilization 92% 92%
Slope Below Optimal 4% 4%
Slope Above Optimal 20% 20%
Liquidity Fee 10% 10%

The price feed recommendation and discount rate parameters in the original proposal are unchanged.

why can’t I see the paxos HUB?is it listed ?