Sigma is a DeFi protocol built on BNB Chain that splits crypto assets into two separate tranches: a stable yield-bearing token (bnbUSD) and a leveraged volatility-absorbing position (xPositions). The protocol draws yield from Binance Launchpool via ListDAO and uses a Stability Pool to help maintain the stablecoin peg. Governance is handled through an x(3,3) token model that gives participants a say in the protocol's direction.