Concentration of Aave's Ethereum Correlation Trade Raises Systemic Risk

Aave's Ethereum correlation trade is concentrated in just 9% of its positions, yet accounts for half of all outstanding debt on the platform. Galaxy found that fewer than 9% of Aave V3 Core loans use the E-mode setting, which allows for higher borrowing limits when collateral and debt move together.

The concentrated cohort holds Ethereum staking and restaking wrappers, including weETH, rsETH, and wstETH, making up about 66.2% of the collateral backing these loans. WeETH alone accounts for roughly 42%, while WETH makes up about 73% of the group's debt.

The risk lies in the exchange rate between the wrapper and Ethereum itself, not the price movement of Ethereum. If weETH falls 10% and the WETH debt against it falls the same 10%, the health factor barely moves. However, if weETH or other wrappers start trading at a discount to the $ETH they represent while the debt stays fixed in WETH terms, the collateral weakens relative to what is owed.

The bull case assumes that the wrapper basis holds inside a narrow band, probably under 2%, and E-mode debt keeps shrinking. The bear case assumes that the basis widens into the high single digits across weETH, rsETH, and wstETH at once, pushing the average E-mode health factor down toward 1.