[Direct to AIP] Asset Parameters Optimization

[Direct to AIP] Asset Parameters Optimization

Author: ACI ( Aave Chan Initiative)

Date: 2025-05-26

Direct to AIP proposal updated 2025-06-03 with latest feedback from Risk Service Providers.


Summary

This proposal aims to optimize parameters of certain assets across networks where it is supported.

Motivation

This proposal aims to optimize the Reserver Factor of various stables and also optimize the Optimal Utilization of various assets to better reflect the market mechanisms.

The key changes include:

  • Adjusting Reserve Factor (RF) of various stables from 10% to 20%: increasing the RF routes a larger portion of the interest paid by users to Aave DAO’s Treasury. This does not impact users’ health factor directly while providing better cushion for assets at low utilization.
  • Adjusting Optimal Utilization (Uoptimal) of various assets to 45%: We recommend to decrease Uoptimal of CRV, BAL and SNX to 45%, to better reflect the borrow and supply dynamism for these assets.

Updated 2025-06-03

Specifications

Market Asset Current RF Rec. RF
Ethereum Core crvUSD 10% 20%
Ethereum Core RLUSD 10% 20%
Ethereum Core USDtb 10% 20%
Celo USDT 10% 20%
Deployment Asset Current UOptimal Rec. UOptimal Current Base Rec. Base Current Slope 1 Rec. Slope 1 Current Slope 2 Rec. Slope 2
Ethereum Core CRV 70% 45% 3% - 14% 10% 300% 150%
Ethereum Core SNX 80% 45% 3% - 15% - 100% 150%
Ethereum Core BAL 80% 45% 5% - 22% 15% 150% -
Ethereum Core RLUSD 80% - 0% 4% 6.5% 2.5% 50% -
Polygon CRV 70% 45% 3% - 14% 10% 300% 150%
Polygon BAL 80% 45% 5% - 22% 15% 150% -

Disclaimer

The ACI is not presenting this ARFC on behalf of any third party and is not compensated for creating this ARFC.

Next Steps

  1. If consensus is reached on this [ARFC], escalate this proposal directly to AIP.

Copyright

Copyright and related rights waived via CC0.

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Summary

LlamaRisk supports the proposal to adjust reserve factor and optimal utilization parameters across various assets and markets. These changes are not expected to alter Aave’s overall risk profile. While there may be a slight increase in short-term liquidation risk due to higher borrow rates, this risk remains low. In the medium to long term, we anticipate supply rebalancing as an indirect outcome of these optimizations.

The most significant impact would be on CRV borrow rates, with the new rate on Aave’s Core market rising to 15.6%. This could lead to increased borrow repayments and more pronounced capital migration to different lending venues in the future.

To offset the aggressive impact on CRV borrow rates and align BAL with the broader market rates, we recommend reducing the Slope1 parameters for these assets together with the originally proposed changes. The exact parameter recommendations will be presented jointly with Chaos Labs.

Reserve Factor Changes

Changing the reserve factor will not impact borrow rates, but it will reduce supply rates, as Aave would retain a larger portion of the interest paid by borrowers. Of the four assets affected by this change, only rlUSD has a significant market size, with $132.74 million supplied and a current utilization rate of 30.14%. The other three assets have negligible market sizes.


Source: Aave Dashboard, May 29th, 2025

The impact on supply rates is expected to be minimal. For rlUSD, the supply rate would decrease by just 7 basis points. The largest reductions would be for crvUSD and USDtb, but these would not exceed 45 basis points. As a result, the overall utility for suppliers would remain largely unchanged. Additionally, the increase in revenue for the Aave DAO from this adjustment is expected to be minimal.

Asset Current Supply Rate (%) Estimated Supply Rate at 20% RF (%) Change (%)
crvUSD 3.94% 3.50% -0.44%
rlUSD 0.66% 0.59% -0.07%
USDtb 3.18% 2.83% -0.35%
USDâ‚® 0.00% 0.00% 0.00%

Optimal Utilization Changes

All asset reserves proposed for a downward adjustment of the optimal utilization rate have consistently shown lower utilization in their respective Aave markets. Most of these assets have minimal outstanding borrows, with the exception of CRV on Aave Core, which currently has $5 million in borrows.


Source: Aave Dashboard, May 29th, 2025

Once these changes are implemented, CRV borrow rates on both the Ethereum and Polygon markets are expected to rise significantly, reaching up to 15.6% APY. These higher rates may prompt borrowers to repay their positions and migrate to other platforms over the medium term. However, there are no immediate liquidation risks for either CRV deployment.

Market Asset Current Borrow Rate (%) New Borrow Rate (%) Change (%)
Ethereum Core CRV 11.76% 15.63% +3.87%
Ethereum Core SNX 6.59% 9.02% +2.43%
Ethereum Core BAL 6.26% 6.90% +0.64%
Polygon CRV 9.20% 12.05% +2.85%
Polygon BAL 7.33% 8.69% +1.36%

Although CRV borrow rates would increase as a result of this change, it is expected that utilization rates would gradually decrease over time. One potential way to offset the immediate increase of borrow rates would be to adjust the Slope1 parameter to more moderate levels. The same change could also be applied for BAL reserves, making BAL borrow rates aligned with broader market rates.

Recommended Parameters

Will be presented shortly in collaboration with Chaos Labs.

Disclaimer

This review was independently prepared by LlamaRisk, a community-led decentralized organization funded in part by the Aave DAO. LlamaRisk is not directly affiliated with the protocol(s) reviewed in this assessment and did not receive any 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.

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Overview

Chaos Labs supports the goals of the proposed changes and provides an updated set of recommended parameters.

Motivation

It is critical to continually update parameters on Aave to ensure that they properly reflect the risk profiles of the assets in question and reflect their shifting usage.

Reserve Factor

Chaos Labs supports the proposed changes to the assets’ RF as outlined in the ARFC. By increasing the reserve factor for select stablecoins, the protocol not only bolsters its financial buffer but also demonstrates a commitment to optimizing for long-term sustainability.

Our simulations and risk assessments indicate that these changes will have minimal impact on current users while substantially enhancing the protocol’s ability to weather volatility and absorb unexpected losses. The chart below shows the effect of an increase of RF for these assets, plotted using historical data, depicting how much lower supply APY would be with a 20% RF than a 10% RF.

As plotted above, this change will have a negligible effect on supply yield, only creating a delta greater than 50 bps during periods of high utilization; crvUSD hit over 95% utilization during the spike depicted above.

UOptimal

Chaos Labs also supports the reduction of UOptimal for the assets identified, finding that these assets have not exceeded the 45% utilization threshold in recent months. Thus, reducing UOptimal better aligns their risk parameters with the way the assets are being used, while also reducing risk given that they are primarily used as collateral.

To prevent abrupt changes in borrowing costs for users, we propose targeted modifications to the interest rate (IR) curve parameters of selected assets. For CRV and BAL, we recommend a reduction in their Slope 1 values to ensure borrowing rates remain accessible at the current utilization levels. Given that Slope 2 will now activate earlier due to the adjustment in UOptimal, we also recommend standardizing Slope 2 at 150% across these assets. This level is sufficiently high to discourage excessive utilization while minimizing rate volatility near UOptimal.

In addition, we propose increasing RLUSD’s Base rate and decreasing its Slope 1 to align with Ripple’s growth strategy for the asset. Since RLUSD operates under a constrained borrow cap, its utilization remains limited. Raising the Base rate to 4% will allow RLUSD to more accurately reflect prevailing market rates for stablecoin borrowing despite this limited utilization. A reduced Slope 1 of 2.5% is complementary in order to target the current 6.5% borrow rate at UOptimal.

Specifications

Market Asset Current RF Rec. RF
Ethereum Core crvUSD 10% 20%
Ethereum Core RLUSD 10% 20%
Ethereum Core USDtb 10% 20%
Celo USDT 10% 20%
Deployment Asset Current UOptimal Rec. UOptimal Current Base Rec. Base Current Slope 1 Rec. Slope 1 Current Slope 2 Rec. Slope 2
Ethereum Core CRV 70% 45% 3% - 14% 10% 300% 150%
Ethereum Core SNX 80% 45% 3% - 15% - 100% 150%
Ethereum Core BAL 80% 45% 5% - 22% 15% 150% -
Ethereum Core RLUSD 80% - 0% 4% 6.5% 2.5% 50% -
Polygon CRV 70% 45% 3% - 14% 10% 300% 150%
Polygon BAL 80% 45% 5% - 22% 15% 150% -

Disclaimer

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

Copyright

Copyright and related rights waived via CC0

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