Ethena

Ethena is the company behind USDe, which it calls a synthetic dollar rather than a stablecoin — a deliberate distinction. A conventional stablecoin like USDC or USDT holds dollars and Treasuries in reserve, so each token is redeemable for real cash. USDe holds no fiat. It instead keeps crypto collateral such as ETH and BTC and offsets that exposure with short perpetual-futures positions, so the combined position stays roughly flat in dollar terms whichever way the market moves. That is what "delta-neutral" means. A staked version, sUSDe, passes through yield that comes mainly from futures funding payments. Because the design is fundamentally different from a fiat-backed coin, USDe carries a different risk profile, which the safety section below covers.

The peg mechanism is worth understanding before using USDe. For each unit of crypto collateral, Ethena opens an equal-sized short on a perpetual future. If the collateral's price falls, the short gains by the same amount; if it rises, the short loses by the same amount — so the net dollar value is intended to stay near $1. The yield on sUSDe comes chiefly from funding rates: when more traders are long perpetuals than short, they pay funding to shorts, and Ethena is on the short side. This makes the return dependent on market structure rather than on interest earned from bank reserves. When funding turns negative or hedging venues come under stress, the model is tested — which is the core of the risk discussion.

Ethena has not suffered a protocol hack that drained user funds, but USDe is a more complex instrument than a fiat-backed stablecoin, and its risks are structural rather than about code alone. The peg depends on the hedge working: yield relies on positive funding rates, so a prolonged period of negative funding erodes returns and can pressure the model. Because the shorts are held on centralized derivatives venues, there is exchange and custody counterparty risk — an exchange failure or a settlement problem could break the hedge. During severe market-wide stress USDe has briefly traded below $1 on some venues before arbitrage restored it, and Ethena maintains a reserve fund as a backstop, though that fund is small relative to total supply.

In short, USDe is not the same kind of "dollar" as USDC or USDT. Treat it as a yield-bearing derivatives product whose stability holds under normal conditions but can be stressed by funding regimes and exchange risk. As always, the ordinary DeFi dangers — phishing sites and malicious approval prompts — apply on top. Confirm the official domain and read what you sign.