ARC: Risk Parameter Updates 2021-11-04

Simple Summary

A proposal to adjust seven (7) total risk parameters across five (5) Aave V2 assets including LTV, Liquidation Threshold, and Liquidation Bonus. In addition, we propose freezing the KNCL reserve.

As a side note, Gauntlet is also analyzing potential interest rate parameter updates for AMPL.


This proposal is a batch update of risk parameters to align with the the Moderate risk level chosen by the Aave community. These parameter updates are a continuation of Gauntlet’s regular parameter recommendations, the latest being AIP-43: Risk Parameter Updates 2021-10-21.


This set of parameter updates seeks to maintain the overall risk tolerance of the protocol while making risk trade-offs between specific assets. For more detail on Gauntlet’s first two months of recommendations and their impact, please see Q2 Dynamic Risk Parameters and the Monthly Risk Report.


This past week had significant updates in market conditions as well as drastic changes within the Aave protocol. Volatility drops and increases in trading volume and liquidity for most assets were observed. At the same time, there were significant withdrawals from stablecoins reserves. These transactions should not lead to less protocol safety, but these transient changes are important to consider within the context of ecosystem structure.

Parameter Current Value Recommended Value
ENJ Liquidation Bonus 10.0% 7.5%
REN Loan To Value 55% 60%
REN Liquidation Threshold 60% 65%
SNX Loan To Value 30% 40%
SNX Liquidation Threshold 55% 60%
SUSHI Liquidation Bonus 10.0% 8.5%
ZRX Loan To Value 60% 65%

See below volatility and exchange volume data from 10/21 to 11/04 that were important drivers for the updated parameter recommendations.

Symbol 11-04 Volatility 10-21 Volatility Volatility Change Weekly Average Daily Volume Change (%)
ENJ 1.13420106 1.099162375 0.035038685 4.707755052
REN 1.101234165 1.530519396 -0.429285231 0.073368269
SNX 0.77106532 1.070499773 -0.299434453 1.189819991
SUSHI 0.973681039 1.284012632 -0.310331593 0.641782118
ZRX 0.8480448 1.067526026 -0.219481226 6.053287908

Freezing KNCL
The KyberDAO approved the proposal to migrate KNC token contract to a new implementation on 4/20, which enables Kyber governance to upgrade KNC efficiently. As of 11/2, 177M of KNC have migrated to the new Kyber Network Crystal (KNC) and 74M of KNC are still in the old KNC Legacy (KNCL) contract. There is currently 916K KNCL supply and 229k total borrowed on Aave.

Considering that exchanges (e.g. Kraken, have stopped supporting KNCL deposit and trading, the liquidity of KNCL has also been reduced. We propose freezing KNCL to speed up the KNC migration as well as eliminating the risk of keeping a less liquid deprecated asset on the platform.

AMPL Interest Rate

We observe that AMPL has experienced positive rebases in the past two weeks. As a result, the AMPL market is consistently showing a high utilization rate due to rational borrower behavior. In addition, normal AMPL lenders cannot get the upside of positive rebases (via holding AMPL in a wallet), and they also cannot withdraw their liquidity. The current interest rate is not high enough to offset the potential lender loss under a high utilization rate scenario.

Gauntlet is modelling updates to the interest rate curve to be better aligned with the rebasing returns, and will return to the Community with our findings soon.

Risk Dashboard

The community should use Gauntlet’s Risk Dashboard to better understand the updated parameter suggestions and general market risk in Aave V2.

Next Steps

  • Initiate a Snapshot immediately since the community has already weighed in on changes of this nature recently.
  • Targeting an AIP on 2021-11-08


Both parts of the proposal look sensible to me
Is the supply of KNCL falling as people migrate and are we seeing it being paid back too?

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As can be seen from the charts, the KNCL total liquidity is falling, and KNCL are being paid back after the migration. A frozen KNCL market doesn’t allow any new deposit, borrow, or rate swap, but allows repayments, liquidations, rate rebalances and withdrawals. Therefore, freezing KNCL can expect to speed up repayments and withdrawals.

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