[RFC] Onboard kpkUSDC Yield (Morpho) to Arbitrum USDC Lower Risk fleet

[Sixty]

1. Summary

This proposal seeks to onboard a new yield strategy (ARK) to the USDC Lower Risk Vault on Arbitrum. This ARK allocates capital to a vault built on Morpho V2 infrastructure, which is currently offering materially higher yields compared to the strategies presently deployed within the USDC fleet.

The strategy predominantly routes USDC liquidity into markets utilizing wstETH, WBTC, and thBILL collateral, enabling the Lazy Summer Protocol to capture additional lending yield while maintaining exposure to high-liquidity, blue-chip DeFi primitives.

If approved, this ARK will expand the strategy set available to the USDC vault on Arbitrum, allowing capital to be dynamically routed toward these higher-yielding opportunities while maintaining diversification across strategies.

2. Motivation:

By integrating this ARK, the USDC vault can capture higher yields while maintaining exposure to well-established collateral assets. KPK has also established itself as one of the leading professional vault curators in DeFi, with a strong track record of managing onchain capital for major DAOs and institutional participants. Their expertise in market selection, risk parameter management, and automated rebalancing allows them to optimize yield opportunities while maintaining disciplined risk controls.

The KPK USDC Yield Ark has also shown an average yield of ~5% over the last 30 days, compared with the LR fleet’s current 30D yield of ~3.75%.

3. Specification

Asset	Vault Name	Contract Address	Target Protocol	Risk Level
USDC	kpkUSDC Yield	0x2C609d9CfC9dda2dB5C128B2a665D921ec53579d	Morpho V2	Low/Medium

4. Risk Assessment:

Lazy Summer Protocol currently has significant exposure to Morpho, and several V2 vaults have already been onboarded as ARKs; therefore, it is not expected to pose any new risk to the Lazy Summer Protocol, from both technical and economic perspectives.

The kpkUSDC Yield vault currently has collateral exposure to the following assets:

5. Next Steps

1. Risk Review: Tagging @BlockAnalitica to provide a risk classification and suggest initial deposit caps for this ARK.

2. DAO Signal: Gather feedback from @Recognized_Delegates
   

3. SIP Promotion: Once risk parameters are defined, promote this to a formal SIP for on-chain execution.

[BlockAnalitica]

kpkUSDC V2 Yield (Morpho) Risk Assessment for Arbitrum USDC Lower Risk Fleet

Block Analitica reviewed the kpkUSDC Yield V2 vault on Arbitrum. The vault allocates USDC across multiple Morpho V2 markets collateralized by wstETH, WBTC, WETH, weETH, sUSDS, syrupUSDC, thBILL, and PT-thBILL-18JUN2026. The vault supersedes the kpkUSDC Yield V1 vault, which shares a similar collateral composition.

Besides thBILL and syrupUSDC, the collaterals are familiar collateral types within DeFi risk frameworks and do not introduce the same settlement, oracle, and redemption constraints as thBILL and syrupUSDC. SyrupUSDC from Maple has been already accepted as collateral for LR and HR fleets in Lazy Summer. However, the thBILL market introduces a collateral type not previously approved in the Lazy Summer risk universe and is the determinative factor in this classification.

Collateral Exposure

Vault	Collateral Types	Infrastructure
kpkUSDC Yield V2	wstETH, WBTC, WETH, weETH, sUSDS, syrupUSDC, thBILL, PT-thBILL-18JUN2026	Morpho V2 (Arbitrum)

thBILL is issued by Theo and is designed as a basket token that currently allocates to tULTRA, linked to Standard Chartered’s Libeara platform and the ULTRA money market fund managed by FundBridge, sub-advised by Wellington Management, and custodied by Standard Chartered.

The underlying collateral quality is not the primary concern. The relevant risk for a Morpho collateral market is not only credit quality, but liquidation reliability. thBILL has institutional-grade Treasury exposure, but its backing and redemption pathway remain connected to off-chain fund infrastructure, primary-market access controls, and NAV/oracle inputs. As a result, primary redemption should not be treated as a guaranteed real-time liquidation backstop.

This creates a mismatch between DeFi liquidation mechanics and the operating model of the underlying RWA structure. Morpho liquidations require liquidators to dispose of seized collateral through available secondary liquidity. Liquidation reliance on secondary markets should therefore be assessed against current pool depth, stressed exit size, and market conditions at the time of liquidation. This concern is amplified by the fact that the Arbitrum thBILL/USDC Morpho market carries a 94.5% LLTV, leaving limited room for delayed exits, oracle latency, or liquidity deterioration under stress.

Theo’s contracts have been audited by Zenith Security, which is a positive mitigant for smart contract risk but does not address the RWA-specific risks relevant to LR fleet classification: off-chain settlement dependency, primary-market access constraints, NAV/oracle dependency, and secondary-market liquidation reliance.

There is also a cross-chain dependency. thBILL is deployed across multiple networks, while its underlying asset structure and settlement processes are linked to Ethereum-based issuance and off-chain fund infrastructure. This does not by itself make thBILL unsuitable, but it adds a dependency not present in more conventional LR collateral types.

Fleet Classification

• kpkUSDC Yield V2: classified as Higher Risk (HR) due to thBILL collateral exposure, and therefore outside LR fleet criteria.

Conclusion

Block Analitica does not recommend onboarding kpkUSDC Yield V2 to the Arbitrum USDC LR fleet. The vault’s thBILL exposure introduces RWA-specific risks around off-chain settlement dependency, primary-market access constraints, oracle and valuation timing, secondary-market liquidation depth, and cross-chain infrastructure. These risks are not necessarily prohibitive for an HR allocation, but they are not aligned with LR fleet criteria.

Block Analitica would revisit this assessment if KPK were to remove thBILL-collateralized markets from the vault’s allocation set, if thBILL’s oracle and secondary-liquidity infrastructure materially improves and proves reliable under stressed conditions, or if an Arbitrum USDC HR fleet is established.