[RFC] Onboard USDC Fleet – Mainnet, Higher Risk Vault

General Discussion Ideas
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Overview

This RFC proposes launching a USDC Fleet – Mainnet (Higher Risk) vault on Summer.fi.

  • Purpose – unlock higher-yield, higher-volatility strategies for USDC holders by aggregating lending, MEV, delta-neutral, and real-world-credit ARKs that sit one-risk band above today’s Mainnet “Lower Risk” vault.

  • Risk parameters – to be set by @BlockAnalitica during the SIP, using the more aggressive limits they outlined in their analysis (see forum post ➜ [RFC] The Path to $1B+ TVL: Onboard Medium - and High-Risk Vaults for Lazy Summer Protocol - #29 by BlockAnalitica).

  • Target TVL ceiling – higher per-ARK and per-vault caps (e.g., 25 % of vault TVL per ARK up to $10 m each, versus 10 % / $5 m in the lower-risk vault) to postpone diminishing-return effects highlighted by BlockAnalitica.

  • Scope – only Mainnet contracts; any overlap with the existing USDC Mainnet (Lower Risk) vault has been intentionally omitted, preserving clear risk segmentation.

This RFC, comes in light of the proposed risk parameters and supported strategies for USDC Higher risk from @BlockAnalitica : Initial Parameters for the new Medium Risk Fleets on Mainnet, Low Risk ETH Fleet on Base, and the two new ARKs on the Sonic USDC.e Fleet

Given the analysis of strategies competing against each other, I have decided to propose a structure where different types of strategies are used in lieu of overlapping Lower risk markets. Namely; Sky Rewards, SUSDE, @Maple_Finance Syrup USDC and sUSDs.

Motivation

  • Unlocks new growth – fresh, risk-tiered USDC strategies can realistically add the next $25 m+ in TVL on our road to $100 m+.

  • Serves broader user personas – appeals to yield-hungry allocators (funds, whales, defi natives) who accept higher volatility, while giving existing users somewhere to deploy incremental capital.

  • Expands the strategy mix – introduces ARKs that go beyond pure lending (rewards farming, stablecoin delta-neutral, real-world credit), diversifying Summer.fi revenue.

  • Strengthens brand promise – demonstrates that Summer.fi curates all best-in-class DeFi yield, from conservative to adventurous, in one automated interface.

Specifications

Parameter Value
Vault USDC Fleet – Mainnet (Higher Risk)
Deposit Asset USDC
Network Ethereum Mainnet
Risk Tier Higher
Max Ark TVL% To be recommended by @BlockAnalitica (though we seek more aggressive maxTvl% vs lower risk arks.

Proposed ARK’s

# ARK Contract
1 Euler Yield USDC 0xe0a80d35bB6618CBA260120b279d357978c42BCE
2 Euler Swaap Lend USDC 0xf2f826c190D020A6D1EC422bF2269E63b8b315E0
3 Euler Resolve USDC 0xcBC9B61177444A793B85442D3a953B90f6170b7D
4 Morpho Gauntlet USDC Frontier 0xC684c6587712e5E7BDf9fD64415F23Bd2b05fAec
5 Morpho Relend USDC 0xD6D14E60c0DAFcB3B77B296fe718623Ec84e5eb3
6 MEV Capital USDC 0x38afC3aA2c76b4cA1F8e1DabA68e998e1F4782DB
7 Fluid USDC 0x9d1089802eE608BA84C5c98211afE5f37F96B36C
8 Stablecoin Maxi (Euler) 0xce45EF0414dE3516cAF1BCf937bF7F2Cf67873De
9 Sky sUSDs 0xa3931d71877C0E7a3148CB7Eb4463524FEc27fbD
10 Sky Rewards Rate 0x56072C95FAA701256059aa122697B133aDEd9279
11 Ethena sUSDe 0x9D39A5DE30e57443BfF2A8307A4256c8797A3497
12 Maple Syrup USDC² 0x80ac24aA929eaF5013f6436cdA2a7ba190f5Cc0b

$SUMR Rewards

  • TBD - but likely same SUMR reward structure as similar other Mainnet USDC vaults.

Voting & Next Steps

  1. Risk review – @BlockAnalitica finalizes limits (LTV, liquidation, ARK ceilings).
  2. SIP submission – fixed ARK list, risk params, $SUMR gauge weights.
  3. On-chain execution – if passed, deploy vault and activate gauges next epoch.

cc: @jensei @Recognized_Delegates @halaprix @chrisb

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Structure feels well-considered—clear risk segmentation, TVL caps that reflect the new tier, and a solid mix of higher-yield thank you @samehueasyou.

A few thoughts to take us toward SIP:

  • User communication will be critical. The vault label “Higher Risk” does some work, but we should also possibly surface practical guidance on volatility, liquidity expectations, and historical drawdown (where available).

  • Vault ceiling flexibility: Agree with pushing past 10%/5M caps, could we codify a process for dynamically scaling these based on vault health (yield performance, risk flags, utilization) rather than fixed jumps? @BlockAnalitica

  • SUMR alignment: If this vault will be drawing from the same reward pool as the lower-risk Mainnet USDC vault, we might want to inform it by [RFC] Extend and Adjust Vault Rewards Emissions - #2 by chrisb

Great to see Sky, Maple, MEV, and delta-neutral strategies coming together in a single product. This could be one of the protocol’s most impactful vaults for narrative, revenue, and user segmentation.

Looking forward to the SIP draft. :herb:

—jensei

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