Ethena offers 27% annualized rewards to holders of its USDe stablecoins, a yield it generates mostly by shorting ether futures. Decentralized finance platform Ethena attracted massive inflows on its first day amid some criticism around the model it uses to generate an annualized 27% yield to holders of its USDe tokens. More than $287 million of USDe had been minted as of Tuesday morning, less than 24 hours after the platform went live late Monday. The 27% reward is calculated on a seven-day rolling basis and may change each week based on underlying factors.