Staked Axis USD (SUSDX)

Axis is a quantitative yield protocol that issues USDx, a synthetic dollar backed by a market-neutral trading book. Returns come from closing price differences across venues, not from token emissions. sUSDx is the staked form of USDx: users stake USDx to receive sUSDx vault shares. The sUSDx contract uses ERC-4626 vault accounting and an ERC-7540-compatible asynchronous redemption flow. Rewards are added in USDx and increase the sUSDx exchange rate over time. The operating company is Coordinate Labs Pte. Ltd. in Singapore.