Chaos Labs Risk Stewards - Stablecoins Interest Rate Adjustment on Aave V3 - 31.12.25

Overview

Chaos Labs recommends lowering the target borrow rate for major stablecoins from 5.50% to 5.00% through a coordinated adjustment to Slope 1 across Aave V3 markets. Recent market data indicate that stablecoin borrowing activity has continued to fail to meaningfully recover following the previous parameter reduction. Leveraged strategy yields remain structurally compressed, and demand for PT assets remains insufficient to catalyze a sustained rebound in borrowing demand.

Motivation

Over the past two months, utilization rates across major stablecoins have either declined or remained broadly flat. Most stablecoins have operated below the 80% utilization threshold, indicating persistently soft borrowing conditions. This dynamic has not materially improved following our interest rate reduction recommended in late November.

Focusing on the Ethereum instance, USDC utilization has averaged around 80%, with only brief spikes toward 88% that failed to persist. USDT exhibits a similar pattern: although utilization temporarily reached highs near 90%, it has largely hovered around 80% and declined further to below 70% over the final two weeks of 2025.

The observed utilization behavior reflects a continued asymmetry between supply and borrowing dynamics. For USDT and USDC on Ethereum, total supply has remained stable to modestly increasing over the period, while total borrow balances have either trended lower or remained largely stagnant. This divergence is most pronounced for USDT in recent weeks, where borrowing activity has weakened further despite supply remaining stable to slightly increasing. As a result, utilization rates have drifted lower over time, reflecting that borrow-side demand is declining while supply liquidity remains generally intact. The persistence of flat-to-declining borrow balances alongside resilient supply points to a broader softening in leverage-driven activity.

This dynamic is primarily driven by persistently weak yields in Ethena-related strategies. Over the past two months, returns on sUSDe have remained subdued, consistently holding below 5%, which has in turn kept demand for the February PT series muted. This sustained yield compression has materially reduced the attractiveness of stablecoin-based leverage. Under the current rate structure, the diminished carry available from these strategies leaves limited incentive for borrowers to re-engage, effectively constraining any organic rebound in borrowing demand.

Recommendation

In light of the continued absence of a meaningful recovery in leverage-driven demand, we recommend a further downward recalibration of Slope 1 across the major stablecoin markets. Specifically, lowering the target variable borrow rate from 5.50% to 5.00% would better align protocol pricing with prevailing market carry conditions and the current demand environment. With Ethena-related yields remaining compressed and PT-related borrowing demand staying persistently weak, the existing rate configuration continues to sit above the clearing level required to support stable utilization. A further reduction would help stabilize borrowing demand at more sustainable levels and prevent utilization from continuing to drift lower under current market conditions.

For clarity, several stablecoin categories are intentionally excluded from this assessment, including GHO, bridged stablecoins, assets actively undergoing depreciation/offboarding, and other non-core or operationally constrained stablecoins.

Specification

Protocol Instance Asset Current Slope1 Recommended Slope1
Aave V3 Ethereum Core USDC 5.50% 5.00%
Aave V3 Ethereum Core USDT 5.50% 5.00%
Aave V3 Ethereum Core USDe 5.75% 5.25%
Aave V3 Ethereum Core USDtb 5.50% 5.00%
Aave V3 Ethereum Core DAI 5.50% 5.00%
Aave V3 Ethereum Core pyUSD 5.50% 5.00%
Aave V3 Ethereum Core LUSD 5.50% 5.00%
Aave V3 Ethereum Core EURC 6.00% 5.50%
Aave V3 Arbitrum DAI 5.50% 5.00%
Aave V3 Arbitrum USDT0 5.50% 5.00%
Aave V3 Arbitrum USDC 5.50% 5.00%
Aave V3 Optimism DAI 5.50% 5.00%
Aave V3 Optimism USDT 5.50% 5.00%
Aave V3 Optimism USDC 5.50% 5.00%
Aave V3 Base USDC 5.25% 4.75%
Aave V3 Base EURc 8.00% 7.50%
Aave V3 Avalanche DAI.e 5.50% 5.00%
Aave V3 Avalanche USDC 5.50% 5.00%
Aave V3 Avalanche USDt 5.50% 5.00%
Aave V3 Avalanche AUSD 5.50% 5.00%
Aave V3 Avalanche EURC 6.00% 5.50%
Aave V3 Gnosis WXDAI 5.50% 5.00%
Aave V3 Gnosis EURe 5.50% 5.00%
Aave V3 Gnosis USDC.e 5.50% 5.00%
Aave V3 BNB USDC 5.50% 5.00%
Aave V3 BNB USDT 5.50% 5.00%
Aave V3 Scroll USDC 5.50% 5.00%
Aave V3 ZkSync USDC 5.50% 5.00%
Aave V3 ZkSync USDT 5.50% 5.00%
Aave V3 Linea USDC 5.50% 5.00%
Aave V3 Linea USDT 5.50% 5.00%
Aave V3 Celo USDT0 5.50% 5.00%
Aave V3 Celo USDm 5.50% 5.00%
Aave V3 Celo USDC 5.50% 5.00%
Aave V3 Celo EURm 5.50% 5.00%
Aave V3 Plasma USDT0 5.50% 5.00%
Aave V3 Plasma USDe 5.75% 5.25%

Next Steps

We will move forward and implement these updates via the Risk Steward process.

Disclosure

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

Copyright

Copyright and related rights waived via CC0.

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